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Standards guide · Steel tees

Steel tees: dimensions to EN 10253-2

Butt-welding tees in steel are standardised in EN 10253-2. This page carries the figures: pick run, branch and wall thickness series, and the dimension finder shows the dimensioned drawing, the dimension table and the limit deviations for exactly that size. For an equal tee, pick the same diameter for the branch as for the run. What the two centre-to-end dimensions F and G mean, and how type A differs from type B, is explained on the tee basics page.

Standard
EN 10253-2:2026-07
Material
non-alloy and alloy steel
Branch
equal / reducing
Dimensions
F / G

Dimension finder: dimensioned drawing for one specific size

Select run, branch and wall thickness series – the drawing and the dimension table then show exactly that size, with the figures in the drawing itself instead of only the dimension letters. For an equal tee, pick the same diameter for the branch as for the run. What separates an equal from a reducing branch, and type A from type B, is on the tee basics page. The dimension tables for the size pairs listed here are further down this page.

Design variant

EN 10253-2 covers the greyed-out sizes. Our dimension overview lists them as order dimensions – see the table “Further deliverable dimensions” below.

Steel tee · type A · 114.3 × 3.6 – 88.9 × 3.2 mm

Dimensioned drawing of a tee in steel, with a reducing branch, 114.3 × 3.6 – 88.9 × 3.2 mm 114.3 (D) 3.6 (T) 88.9 (D1) 3.2 (T1) © zickwolff.de 105 (F) 98 (G) run branch Steel tee · type A · 114.3 × 3.6 – 88.9 × 3.2 mm DIN EN 10253-2:2026-07 · Data as of 2026-08-18 · all dimensions in mm · to scale F is the centre-to-end dimension from the centreline of the branch to the weld end of the run – the overall length across both ends is 2 × F · G is the centre-to-end dimension from the centreline of the run to the weld end of the branch the two circles are the view onto the weld ends, at the scale of the drawing above – on the left the run, on the right the branch the transition between run and branch is drawn as a radius – the standard requires a smooth transition there but does not specify its shape · drawing calculated from the dimensions of the standard · Otto Zickwolff GmbH · zickwolff.de/wissen
Tee in steel, with a reducing branch, type A, 114.3 × 3.6 – 88.9 × 3.2 mm: section in the plane of the axes with F and G, below it the cross-section at the weld end of the run. The transition between run and branch is drawn as a radius – the standard requires a smooth transition there but does not specify its shape.

Technical basis: DIN EN 10253-2:2026-07. Zickwolff has prepared this presentation for practical use, with our own structure, our own designations and a statement of what kind of value each figure is. The original standard governs normative requirements.

Dimensions of the tee in steel, reducing branch, 114.3 × 3.6 – 88.9 × 3.2 mm
PropertyValueType of information
basic data
branchreducingcalculated
Wall thickness seriesSeries 2standard dimension
Availabilityfrom stock or procuredtrade information
nominal size DN, runDN 100assignment
nominal size DN, branchDN 80assignment
mass3.3 kgguide value
connecting dimensions The dimensions at the welding ends that govern the joint with the pipe that follows.
outside diameter, run D114.3 mmstandard dimension
wall thickness, run T3.6 mmstandard dimension
inside diameter, run ID107.1 mmcalculated
outside diameter, branch D188.9 mmstandard dimension
wall thickness, branch T13.2 mmstandard dimension
inside diameter, branch ID182.5 mmcalculated
installation dimensions The dimensions that determine the installation space.
centre-to-end dimension, run F105 mmstandard dimension
centre-to-end dimension, branch G98 mmstandard dimension
type A or type B Both designs in the standard have identical connecting dimensions. They differ in exactly these two values – type A carries less internal pressure than the straight pipe, type B is reinforced at the fitting body so that it matches it.
pressure factor (type A only) X37 %calculated
wall thickness at the fitting body, run (type B only) Ts7.9 mmstandard value (not binding)
wall thickness at the fitting body, branch (type B only) Tb6 mmstandard value (not binding)

Without an entry in the “Type of information” column: standard dimension. A dimension that EN 10253-2 specifies for this size.

Where exactly it is measured

outside diameter, run D
measured across the edge at the welding ends of the run pipe
outside diameter, branch D1
measured at the welding end of the branch – on an equal tee D1 = D
wall thickness, run T
at the welding end of the run – on the fitting body it may deviate downwards
wall thickness, branch T1
at the welding end of the branch – the series is the same as on the run, the value belongs to diameter D1
centre-to-end dimension, run F
from the centreline of the branch to the welding end of the run – the overall dimension across both ends is 2 × F
centre-to-end dimension, branch G
from the centreline of the run to the welding end of the branch
nominal size DN, run
the customary pipe designation – it is NOT given in EN 10253 but comes from the pipe dimension world
nominal size DN, branch
assigned via the outside diameter of the branch, otherwise as for the run
inside diameter, run ID
clear bore – the standard defines it as D minus twice T
inside diameter, branch ID1
ID1 = D1 minus twice T1
pressure factor (type A only) X
ratio of the pressure resistance of the fitting to that of a pipe of the same wall thickness – not a measured value but calculated
mass
guide value for estimating freight and loads
wall thickness at the fitting body, run (type B only) Ts
measured on the body of the run – T still applies at the welding ends
wall thickness at the fitting body, branch (type B only) Tb
measured on the body of the branch – T1 still applies at the welding ends

Not in the dimension finder: ⌀ 21.3 – 17.2, ⌀ 26.9 – 17.2 – the standard gives no wall thickness series for one of the two diameters, and without a wall thickness there is neither a scale drawing nor a complete dimension row

Not in the dimension finder: ⌀ 60.3 – 57, ⌀ 76.1 – 57, ⌀ 88.9 – 57, ⌀ 114.3 – 57, ⌀ 114.3 – 108, ⌀ 139.7 – 108, ⌀ 139.7 – 133, ⌀ 168.3 – 108, ⌀ 168.3 – 133, ⌀ 168.3 – 159, ⌀ 219.1 – 108, ⌀ 219.1 – 133, ⌀ 219.1 – 159, ⌀ 273 – 133, ⌀ 273 – 159, ⌀ 323.9 – 159, ⌀ 1219 – 1168 – the standard carries a dash in place of the G dimension and names this branch only with an equal run

Dimensions are nominal dimensions to EN 10253-2 and do not replace the data sheet of the actual item. No statement about pressure or temperature suitability and no statement about the material. F and G are dimensions measured from the centreline – the overall length across both run ends is 2 × F. Direct link to this size

The standard names dimensions. What is listed here is deliverable – from stock or procured; how quickly a size is available we clarify on request.

How to measure correctly

A tee is measured at three ends: outside diameter D and wall thickness T at the run, D1 and T1 at the branch – on an equal tee D1 equals D. The centre-to-end dimension F runs from the centre line of the branch to the welding end of the run, so the overall length is 2 × F. G runs from the centre line of the run to the welding end of the branch.

outside diameter, run D
measured across the edge at the welding ends of the run pipe
outside diameter, branch D1
measured at the welding end of the branch – on an equal tee D1 = D
wall thickness, run T
at the welding end of the run – on the fitting body it may deviate downwards
wall thickness, branch T1
at the welding end of the branch – the series is the same as on the run, the value belongs to diameter D1
centre-to-end dimension, run F
from the centreline of the branch to the welding end of the run – the overall dimension across both ends is 2 × F
centre-to-end dimension, branch G
from the centreline of the run to the welding end of the branch

A measured value rarely matches the table exactly. The dimension finder on this page shows the limit deviations of EN 10253-2 for every size.

Branch

Equal and reducing branch

A tee with an equal branch – in the German trade almost always called “egal”, from the English equal tee – has the same nominal size in the branch as in the run. With a reducing branch the branch is smaller.

The standard does not list this as a feature of its own. It decides it via the dimension statement: “If only one dimension pair is given (D × T), an equal tee is meant” (EN 10253-2, clause 5.3.4). Two dimension pairs therefore mean a reducing branch – the order needs nothing more than that.

Both are listed in one dimension table (Table A.2) with the same four dimensions D, D1, F and G. That is why the dimension finder above also shows both: you select the run, and if you need a smaller branch, the second field appears.

Rows of black steel tees with bevelled welding ends and stamped material marking on the rack
Steel tees with equal branch. The ends are bevelled – whether that is so is decided by the wall thickness (see below). The marking is on the body, not at the end.

Not every size exists as a reducing tee. For the branches ⌀ 57, 108, 133, 159 and 1168 mm the dimension table carries a dash in column G: these sizes are standardised with an equal branch only. The dimension finder therefore does not offer them as a reducing branch – that is not a gap in our data but a statement of the standard.

Type A and type B

Type A and type B: the pressure factor

At the place where the branch sits, a tee has an opening in the pipe wall – and hence, at that place, less load-bearing cross-section than a straight pipe. The standard describes this with two versions:

Version

Type A – reduced pressure factor

Wall thickness at the fitting body as at the welding ends. The internal pressure the part withstands is lower than that of the straight pipe of the same wall thickness. How much lower is stated by the pressure factor X in per cent – it is given in the dimension table above for every size.

Version

Type B – full pressure resistance (standard: “for use at full service pressure”)

Increased wall thickness at the fitting body, designed for the same internal pressure as the straight pipe. The standard calculates the wall thickness needed according to Annex B; it is listed in Annex D.

The pressure factor in our table is calculated by us – according to the equations of Annex B, clause B.4.4, with an arithmetical cross-check. The advantage of a calculated value: it applies to every size, not only to a selection.

The type B wall thickness is a solution, not the solution. If you switch to type B above, Ts (run) and Tb (branch) appear in the dimension table and in the drawing. Both values are non-binding: the standard names them but does not specify them. There is a factual reason for this – for tees, Annex B gives not a calculation but a verification procedure (B.5.3). A size therefore has not one permissible wall thickness but a range; for roughly four out of ten rows, one tenth of a millimetre thinner would be permissible too. Our values are arithmetically cross-checked by this procedure. What governs an ordered part is the verification according to Annex B, not the table.

Installation dimensions

The overall dimensions F and G

The tee has two centre-to-end dimensions, and both are measured from the centre line – not across the whole part:

  • F – from the centre line of the branch to the welding end of the run. The overall length across both run ends is therefore 2 × F, not F.
  • G – from the centre line of the run to the welding end of the branch.

F depends only on the run diameter and is the same for all branches of the same size. G, by contrast, changes with the branch – that is why the dimension table carries a row of its own for each pair (D, D1).

The permissible deviations of both dimensions are given in EN 10253-2, Table 13; the drawing above shows them in tolerance mode as a second line at the dimension.

Tolerances and testing

Limit deviations, out-of-roundness and inside diameter

The drawing above carries the complete tolerance block – here the points that differ for the tee from the other fittings of the series of standards:

  • Inside diameter: 70 %, not 80 %. The inside diameter must at every point of the fitting exceed 80 % of the inside diameter at the welding ends – for tees the standard expressly names 70 % (clause 11.2.1.2). That is the consequence of the branch opening.
  • No out-of-roundness limit at the fitting body. The 4 % at the body applies, according to clause 11.2.2, only “to elbows and 180° elbows”. At the welding ends of the tee the general rule applies.
  • No form tolerance P. In the overall dimension table it is expressly listed as a form tolerance for elbows.

Above ⌀ 610 mm the wall thickness limit deviations depend on whether the fitting is seamless or welded. Below that, the distinction makes no difference to the dimensions – and the standard leaves the choice of pipe to the manufacturer anyway, as long as the order specifies nothing else. What exactly “seamless” and “welded” mean here is explained on the general tee page.

Limits of this page

Out-of-roundness compared: tube standards and EN 10253-2

The box above says it in words – here the figures stand side by side. For the fitting, measurement is at the welding ends; the tube values apply to the tube that arrives there.

Out-of-roundness compared: tube standards and fitting standard
StandardRangeOut-of-roundness
EN 10216 (seamless, boiler tube)names no out-of-roundness limit
EN 10217 (welded)D > 406.4 and D/T ≤ 100< 2 %
EN 10208 (line pipe)D ≤ 610< 2 %
EN 10208 (line pipe)D > 610 and D/T ≤ 75< 1.5 %, at most 15 mm
EN 10208 (line pipe)D > 610 and D/T > 75< 2.0 %
API 5Lall± 1.0 % · dₐ
EN 10253-2at the welding end, ⌀ ≤ 273included in the diameter limit deviation
EN 10253-2at the welding end, 273 < ⌀ ≤ 610≤ 2 %
EN 10253-2at the welding end, ⌀ > 610≤ 1 %

At the branch the same graduation applies with the diameter of this end (D1) – a reducing tee is therefore assessed per end.

Fitting values: EN 10253-2, 11.2.2 · tube values as given in Tabellenbuch Rohrleitungsbau, section 2.1.3 (reference book – the tube standards themselves are not available to us)

Which sizes this page shows – and which it does not

The dimension finder shows every combination of run, branch and wall thickness series for which EN 10253-2 names a wall thickness. Two groups are missing, and both are missing for a reason the standard itself gives:

  • Sizes without a wall thickness series. Without a wall thickness there is neither a drawing to scale nor a complete dimension row – a number would have to be invented. The dimensions the standard gives for these diameters are listed in the dimension tables further down.
  • Branches standardised as equal tees only. For ⌀ 57, 108, 133, 159 and 1168 mm the standard carries a dash in column G.

We spell out both instead of silently omitting the sizes: a gap that can be seen is something different from one that is taken for completeness.

Read on

Dimension tables for tees in steel: 73 size pairs

Zickwolff dimension overview (standard reference EN 10253-2) – one row per size pair of run and branch, the wall thicknesses of each series side by side. If you need a dimensioned drawing for one of these sizes, the dimension finder at the top of this page has it.

Nominal dimensions Pressure factor Type B wall thicknesses outside the preferred series Further deliverable dimensions

Nominal dimensions by wall thickness series

T is the wall thickness of the run, T1 that of the branch, both belonging to the same series number. F and G are dimensions measured from the centre line – the overall length across both run ends is 2 × F.

Show full table · more than 70 rows
Tees in steel to DIN EN 10253-2:2026-07, from stock or procured – 72 size pairs in 5 wall thickness series, all dimensions in millimetres.
Doutside diameter, run in mmDNnominal size DN, runD1outside diameter, branch in mmDN1nominal size DN, branchFcentre-to-end dimension, run in mmGcentre-to-end dimension, branch in mmSeries 2Series 3Series 4Series 5Series 6
T – run wall thickness in mm, series 2T1 – branch wall thickness in mm, series 2T – run wall thickness in mm, series 3T1 – branch wall thickness in mm, series 3T – run wall thickness in mm, series 4T1 – branch wall thickness in mm, series 4T – run wall thickness in mm, series 5T1 – branch wall thickness in mm, series 5T – run wall thickness in mm, series 6T1 – branch wall thickness in mm, series 6
21.31521.315252522we do not show this wall thickness series at presentwe do not show this wall thickness series at present44no wall thickness for run and branch in this series
26.92021.31529292.32we do not show this wall thickness series at presentwe do not show this wall thickness series at present44no wall thickness for the branch in this series
26.92026.92029292.32.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
33.72521.31538382.62we do not show this wall thickness series at present43.2we do not show this wall thickness series at presentno wall thickness for the branch in this series
33.72526.92038382.62.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
33.72533.72538382.62.63.23.244we do not show this wall thickness series at presentwe do not show this wall thickness series at present
42.43221.31548482.62we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentno wall thickness for the branch in this series
42.43226.92048482.62.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
42.43233.72548482.62.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
42.43242.43248482.62.63.63.644we do not show this wall thickness series at presentwe do not show this wall thickness series at present
48.34021.31557572.62we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentno wall thickness for the branch in this series
48.34026.92057572.62.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
48.34033.72557572.62.6we do not show this wall thickness series at present44we do not show this wall thickness series at presentwe do not show this wall thickness series at present
48.34042.43257572.62.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
48.34048.34057572.62.6we do not show this wall thickness series at present44556.36.3
575764642.92.9no wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this series
60.35026.92064442.92.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
60.35033.72564512.92.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
60.35042.43264572.92.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
60.35048.34064602.92.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
60.35060.35064642.92.9we do not show this wall thickness series at presentwe do not show this wall thickness series at present5.65.6we do not show this wall thickness series at present
76.16533.72576572.92.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
76.16542.43276642.92.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
76.16548.34076672.92.6we do not show this wall thickness series at presentwe do not show this wall thickness series at present7.15we do not show this wall thickness series at present
76.16560.35076702.92.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
76.16576.16576762.92.9we do not show this wall thickness series at present5.65.67.17.1we do not show this wall thickness series at present
88.98042.43286703.22.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
88.98048.34086733.22.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
88.98060.35086763.22.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
88.98076.16586833.22.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
88.98088.98086863.23.2we do not show this wall thickness series at present5.65.688we do not show this wall thickness series at present
1081081001003.63.6no wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this series
114.310048.340105863.62.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
114.310060.350105893.62.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
114.310076.165105953.62.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
114.310088.980105983.63.2we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
114.3100114.31001051053.63.6we do not show this wall thickness series at present6.36.38.88.8we do not show this wall thickness series at present
13313312012044no wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this series
139.712560.35012410542.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
139.712576.16512410842.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
139.712588.98012411143.2we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
139.7125114.310012411743.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
139.7125139.712512412444we do not show this wall thickness series at present6.36.31010we do not show this wall thickness series at present
1591591381384.54.5no wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this series
168.315076.1651431214.52.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
168.315088.9801431244.53.2we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
168.3150114.31001431304.53.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
168.3150139.71251431374.54we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
168.3150168.31501431434.54.5we do not show this wall thickness series at present7.17.11111we do not show this wall thickness series at present
219.120088.9801781526.33.2we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
219.1200114.31001781566.33.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
219.1200139.71251781626.34we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
219.1200168.31501781686.34.5we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
219.1200219.12001781786.36.3we do not show this wall thickness series at present8812.512.5we do not show this wall thickness series at present
273250114.31002161846.33.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
273250139.71252161916.34we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
273250168.31502161946.34.5we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
273250219.12002162036.36.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
2732502732502162166.36.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.9300139.71252542167.14we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.9300168.31502542197.14.5we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.9300219.12002542297.16.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.93002732502542417.16.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.9300323.93002542547.17.1we do not show this wall thickness series at presentwe do not show this wall thickness series at present12.512.5we do not show this wall thickness series at present
355.6350168.315027923884.5we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
355.6350323.930027927087.1we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
355.6350355.635027927988we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
406.4400219.12003052738.86.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
406.44002732503052838.86.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
406.4400406.44003053058.88.8we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
4574504574503433431010we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
508500508500381381we do not show this wall thickness series at present1111we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present

standard dimension: D, D1, F, G, T, T1 · assignment: DN, DN1

DN and DN1: The standard does not assign a nominal size to every size. Where the dash stands there is none – the size is designated by its outside diameter.

Where a series column carries no figure, the digit at the dash says why – mostly because the standard does not list the size pair in that series, in one case because it does list it and we do not show it at present:

2 EN 10253-2 lists no wall thickness of this series for this branch. 4 cells

3 EN 10253-2 lists a wall thickness of this series for neither of the two ends. 17 cells

5 EN 10253-2 does list a wall thickness of this series for this size pair; our dimension overview does not show it at present. 241 cells

Pressure factor by wall thickness series

The pressure factor X says what proportion of the pipe pressure a tee of this size carries. It is not a figure from the dimension table but calculated to Annex B, and it applies to design type A only.

Show full table · more than 70 rows
Pressure factor in per cent for tees in steel to DIN EN 10253-2:2026-07, type A – 72 size pairs, the same rows as above.
Doutside diameter, run in mmD1outside diameter, branch in mmXpressure factor (type A only) in %
Series 2 – pressure factor in per centSeries 3 – pressure factor in per centSeries 4 – pressure factor in per centSeries 5 – pressure factor in per centSeries 6 – pressure factor in per cent
21.321.342we do not show this wall thickness series at presentwe do not show this wall thickness series at present51no wall thickness for run and branch in this series
26.921.344we do not show this wall thickness series at presentwe do not show this wall thickness series at present57no wall thickness for the branch in this series
26.926.943we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
33.721.343we do not show this wall thickness series at present50we do not show this wall thickness series at presentno wall thickness for the branch in this series
33.726.942we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
33.733.7414346we do not show this wall thickness series at presentwe do not show this wall thickness series at present
42.421.344we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentno wall thickness for the branch in this series
42.426.943we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
42.433.742we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
42.442.4384243we do not show this wall thickness series at presentwe do not show this wall thickness series at present
48.321.342we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentno wall thickness for the branch in this series
48.326.942we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
48.333.742we do not show this wall thickness series at present48we do not show this wall thickness series at presentwe do not show this wall thickness series at present
48.342.438we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
48.348.335we do not show this wall thickness series at present404346
575736no wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this series
60.326.958we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
60.333.751we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
60.342.443we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
60.348.339we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
60.360.336we do not show this wall thickness series at presentwe do not show this wall thickness series at present44we do not show this wall thickness series at present
76.133.757we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
76.142.448we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
76.148.344we do not show this wall thickness series at presentwe do not show this wall thickness series at present51we do not show this wall thickness series at present
76.160.341we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
76.176.134we do not show this wall thickness series at present4346we do not show this wall thickness series at present
88.942.450we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
88.948.346we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
88.960.342we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
88.976.136we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
88.988.934we do not show this wall thickness series at present4146we do not show this wall thickness series at present
10810834no wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this series
114.348.349we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
114.360.345we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
114.376.139we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
114.388.937we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
114.3114.334we do not show this wall thickness series at present4045we do not show this wall thickness series at present
13313333no wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this series
139.760.347we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
139.776.141we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
139.788.939we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
139.7114.336we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
139.7139.733we do not show this wall thickness series at present3944we do not show this wall thickness series at present
15915933no wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this series
168.376.144we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
168.388.942we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
168.3114.338we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
168.3139.735we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
168.3168.333we do not show this wall thickness series at present3844we do not show this wall thickness series at present
219.188.945we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
219.1114.340we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
219.1139.737we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
219.1168.337we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
219.1219.134we do not show this wall thickness series at present3743we do not show this wall thickness series at present
273114.343we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
273139.740we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
273168.337we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
273219.138we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
27327332we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.9139.742we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.9168.339we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.9219.139we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.927333we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.9323.932we do not show this wall thickness series at presentwe do not show this wall thickness series at present39we do not show this wall thickness series at present
355.6168.340we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
355.6323.933we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
355.6355.632we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
406.4219.140we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
406.427335we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
406.4406.432we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
45745732we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
508508we do not show this wall thickness series at present32we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present

standard dimension: D, D1 · calculated: X

Where a series column carries no figure, the digit at the dash says why – mostly because the standard does not list the size pair in that series, in one case because it does list it and we do not show it at present:

2 EN 10253-2 lists no wall thickness of this series for this branch. 4 cells

3 EN 10253-2 lists a wall thickness of this series for neither of the two ends. 17 cells

5 EN 10253-2 does list a wall thickness of this series for this size pair; our dimension overview does not show it at present. 241 cells

Type B wall thicknesses by series

Ts is the wall thickness at the body of the run, Tb the one at the body of the branch. At the welding ends T and T1 from the table above still apply – the reinforcement lies on the inside and tapers out towards the ends.

These wall thicknesses are not laid down. The wall thickness of a tee is not calculated, it is assumed and then verified. So a size pair does not have one permissible wall thickness but a whole range – the values here are one solution, not the solution, and a manufacturer may deviate as long as the verification works out.

Show full table · more than 70 rows
Type B wall thicknesses for tees in steel to DIN EN 10253-2:2026-07, values without obligation – the same rows as above, all dimensions in millimetres.
Doutside diameter, run in mmD1outside diameter, branch in mmSeries 2Series 3Series 4Series 5Series 6
Ts – wall thickness at the fitting body, run (type B only) in mm, series 2Tb – wall thickness at the fitting body, branch (type B only) in mm, series 2Ts – wall thickness at the fitting body, run (type B only) in mm, series 3Tb – wall thickness at the fitting body, branch (type B only) in mm, series 3Ts – wall thickness at the fitting body, run (type B only) in mm, series 4Tb – wall thickness at the fitting body, branch (type B only) in mm, series 4Ts – wall thickness at the fitting body, run (type B only) in mm, series 5Tb – wall thickness at the fitting body, branch (type B only) in mm, series 5Ts – wall thickness at the fitting body, run (type B only) in mm, series 6Tb – wall thickness at the fitting body, branch (type B only) in mm, series 6
21.321.34.23.2we do not show this wall thickness series at presentwe do not show this wall thickness series at present7.45.6no wall thickness for run and branch in this series
26.921.34.43.3we do not show this wall thickness series at presentwe do not show this wall thickness series at present6.75.1no wall thickness for the branch in this series
26.926.94.83.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
33.721.34.83.6we do not show this wall thickness series at present6.75we do not show this wall thickness series at presentno wall thickness for the branch in this series
33.726.95.23.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
33.733.75.74.36.757.95.9we do not show this wall thickness series at presentwe do not show this wall thickness series at present
42.421.34.83.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentno wall thickness for the branch in this series
42.426.95.13.8we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
42.433.75.54.1we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
42.442.464.57.75.88.36.3we do not show this wall thickness series at presentwe do not show this wall thickness series at present
48.321.34.93.7we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentno wall thickness for the branch in this series
48.326.95.23.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
48.333.75.54.2we do not show this wall thickness series at present7.75.8we do not show this wall thickness series at presentwe do not show this wall thickness series at present
48.342.464.5we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
48.348.36.34.7we do not show this wall thickness series at present8.76.610.37.812.39.3
5757no type B wall thickness for this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this series
60.326.94.53.4we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
60.333.75.13.8we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
60.342.45.84.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
60.348.36.24.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
60.360.36.95.2we do not show this wall thickness series at presentwe do not show this wall thickness series at present11.48.6we do not show this wall thickness series at present
76.133.74.83.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
76.142.45.44we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
76.148.35.74.3we do not show this wall thickness series at presentwe do not show this wall thickness series at present11.48.5we do not show this wall thickness series at present
76.160.36.34.8we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
76.176.17.25.4we do not show this wall thickness series at present11.88.914.410.8we do not show this wall thickness series at present
88.942.45.64.2we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
88.948.35.94.4we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
88.960.36.54.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
88.976.17.35.5we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
88.988.97.96we do not show this wall thickness series at present12.19.116.512.4we do not show this wall thickness series at present
108108no type B wall thickness for this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this series
114.348.36.14.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
114.360.36.65we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
114.376.17.45.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
114.388.97.96we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
114.3114.396.8we do not show this wall thickness series at present13.910.418.814.1we do not show this wall thickness series at present
133133no type B wall thickness for this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this series
139.760.36.95.2we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
139.776.17.65.7we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
139.788.98.16.1we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
139.7114.39.16.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
139.7139.710.27.6we do not show this wall thickness series at present14.310.82216.5we do not show this wall thickness series at present
159159no type B wall thickness for this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this seriesno wall thickness for run and branch in this series
168.376.17.95.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
168.388.98.46.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
168.3114.39.47.1we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
168.3139.710.47.8we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
168.3168.311.58.6we do not show this wall thickness series at present16.512.425.218.9we do not show this wall thickness series at present
219.188.910.47.8we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
219.1114.311.48.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
219.1139.712.49.3we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
219.1168.312.99.7we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
219.1219.115.711.8we do not show this wall thickness series at present19.414.530.222.6we do not show this wall thickness series at present
273114.310.98.2we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
273139.711.98.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
273168.312.89.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
273219.114.510.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
27327316.312.2we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.9139.712.59.4we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.9168.313.410.1we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.9219.115.111.4we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.927316.912.7we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
323.9323.918.613.9we do not show this wall thickness series at presentwe do not show this wall thickness series at present31.323.5we do not show this wall thickness series at present
355.6168.314.510.9we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
355.6323.919.314.5we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
355.6355.620.815.6we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
406.4219.116.912.7we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
406.427318.714we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
406.4406.423.617.7we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
45745726.820.1we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present
508508we do not show this wall thickness series at present29.522.2we do not show this wall thickness series at presentwe do not show this wall thickness series at presentwe do not show this wall thickness series at present

standard dimension: D, D1 · standard value (not binding): Ts, Tb

Where a series column carries no figure, the digit at the dash says why – mostly because the standard does not list the size pair in that series, in one case because it does list it and we do not show it at present:

2 EN 10253-2 lists no wall thickness of this series for this branch. 4 cells

3 EN 10253-2 lists a wall thickness of this series for neither of the two ends. 17 cells

4 EN 10253-2 names the size pair in this series, but gives no value for design type B. 4 cells

5 EN 10253-2 does list a wall thickness of this series for this size pair; our dimension overview does not show it at present. 241 cells

Dimensions outside the preferred series

EN 10253-2 pairs diameter and wall thickness through a series number. The sizes below we carry with a wall thickness that is in no series for that size – or with two wall thicknesses that are each in the standard, but not in the same series. The dimensions are established in the same way as in the grid above. Where the standard gives its values through the series number, the cell stays empty.

Dimensions outside the preferred series to EN 10253-2, from stock or procured – 11 rows, all dimensions in millimetres.
Doutside diameter, run in mmD1outside diameter, branch in mmTwall thickness, run in mmT1wall thickness, branch in mmFcentre-to-end dimension, run in mmGcentre-to-end dimension, branch in mmnominal size DN, runnominal size DN, branchIDinside diameter, run in mmID1inside diameter, branch in mmXpressure factor (type A only) in %branch
48.333.743.25757402540.327.342reduziert
60.333.75.65.66451502549.122.566reduziert
60.342.44.53.66457503251.335.246reduziert
60.348.34.546460504051.340.345reduziert
60.360.34.54.56464505051.351.341gleich
76.142.47.17.17664653261.928.267reduziert
76.148.38.887667654058.532.361reduziert
76.160.3557670655066.150.349reduziert
139.788.9101012411112580119.768.960reduziert
168.3114.31111143130150100146.392.357reduziert
508406.4118.8381356500400486388.833reduziert

Further deliverable dimensions (268)

Show full table · more than 200 rows
Further deliverable dimensions – 268 rows, from stock or procured, all dimensions in millimetres.
Doutside diameter, run in mmD1outside diameter, branch in mmTwall thickness, run in mmT1wall thickness, branch in mm
355.6219.15.64.5
355.6219.186.3
355.6219.1107.1
355.6219.112.58
355.6219.11612.5
355.6219.12016
355.6219.12817.5
355.6219.13622.2
355.62735.65
355.627386.3
355.6273108.8
355.627312.510
355.62731612.5
355.62732016
355.62732822.2
355.62733630
406.4168.36.34
406.4168.38.84.5
406.4168.3105.6
406.4168.312.57.1
406.4168.317.511
406.4168.322.214.2
406.4168.33017.5
406.4168.34022.2
406.4323.96.35.6
406.4323.98.87.1
406.4323.9108.8
406.4323.912.510
406.4323.917.512.5
406.4323.922.217.5
406.4323.93025
406.4323.94032
406.4355.66.35.6
406.4355.68.88
406.4355.61010
406.4355.612.512.5
406.4355.617.516
406.4355.622.220
406.4355.63028
406.4355.64036
457219.16.34.5
457219.1106.3
457219.1117.1
457219.112.58
457219.117.512.5
457219.122.216
457219.13217.5
457219.14522.2
4572736.35
457273106.3
457273118.8
45727312.510
45727317.512.5
45727322.216
4572733222.2
4572734530
457323.96.35.6
457323.9107.1
457323.9118.8
457323.912.510
457323.917.512.5
457323.922.217.5
457323.93225
457323.94532
457355.66.35.6
457355.6108
457355.61110
457355.612.512.5
457355.617.516
457355.622.220
457355.63228
457355.64536
457406.46.36.3
457406.4108.8
457406.41110
457406.412.512.5
457406.417.517.5
457406.422.222.2
457406.43230
457406.44540
508219.1106.3
508219.117.512.5
508219.12516
5082736.35
508273106.3
508273118.8
50827312.510
50827317.512.5
5082732516
5082733622.2
5082735030
508323.96.35.6
508323.9107.1
508323.9118.8
508323.912.510
508323.917.512.5
508323.92517.5
508323.93625
508323.95032
508355.61110
508355.612.512.5
5084576.36.3
5084571010
5084571111
50845712.512.5
50845717.517.5
5084572522.2
5084573632
5084575045
6102736.35
610273106.3
61027312.58.8
61027317.510
6102732512.5
6102733016
6102734522.2
6102736030
610323.96.35.6
610323.9107.1
610323.912.58.8
610323.917.510
610323.92512.5
610323.93017.5
610323.94525
610323.96032
610355.612.510
610355.617.512.5
610406.46.36.3
610406.4108.8
610406.412.510
610406.417.512.5
610406.42517.5
610406.43022.2
610406.44530
610406.46040
6104571010
61045712.511
61045717.512.5
6104572517.5
6104573022.2
6105086.36.3
6105081010
61050812.511
61050817.512.5
6105082517.5
6105083025
6105084536
6105086050
6106106.36.3
6106101010
61061012.512.5
61061017.517.5
6106102525
6106103030
6106104545
6106106060
711323.97.15.6
711323.9107.1
711323.912.58.8
711323.92510
711355.612.510
711355.62512.5
711406.47.16.3
711406.4108.8
711406.412.510
711406.42512.5
7114571010
71145712.511
7115087.16.3
7115081010
71150812.511
7115082512.5
7116107.16.3
7116101010
71161012.512.5
7116102517.5
7117117.17.1
7117111010
71171112.512.5
7117112525
813355.612.510
813355.62512.5
813406.486.3
813406.4108.8
813406.412.510
813406.42512.5
8134571010
81345712.511
81350886.3
8135081010
81350812.511
8135082512.5
81361086.3
8136101010
81361012.512.5
8136102517.5
81371187.1
8137111010
81371112.512.5
8137112525
81381388
8138131010
81381312.512.5
8138132525
914406.4106.3
914406.412.58.8
914406.42010
914406.42512.5
914508106.3
91450812.510
9145082011
9145082512.5
914610106.3
91461012.510
9146102012.5
9146102517.5
914711107.1
91471112.510
9147112012.5
9147112525
914813108
91481312.510
9148132012.5
9148132525
9149141010
91491412.512.5
9149142020
9149142525
1016610106.3
101661012.510
10166102012.5
10166102517.5
1016711107.1
101671112.510
10167112012.5
10167112525
1016813108
101681312.510
10168132012.5
10168132525
10169141010
101691412.512.5
10169142020
10169142525
101610161010
1016101612.512.5
101610162020
101610162525
1219711107.1
121971112.510
12197112012.5
12197112525
1219813108
121981312.510
12198132012.5
12198132525
12199141010
121991412.512.5
12199142020
12199142525
121910161010
1219101612.512.5
121910162020
121910162525
121912191010
1219121912.512.5
121912192020
121912192525

Order dimensions and values calculated by us; deliverable from stock or procured, availability on request. Limit deviations and figures from the standard: see the main table and the standard itself.

The dimensions given are nominal dimensions. The text of the standard prevails. The German edition DIN EN 10253-2:2026-07 reproduces the European version EN 10253-2:2021+A1:2025.

What has changed since the earlier edition

For the tee, the comparison covers the editions from DIN EN 10253-2:2008-09. Not yet recorded: DIN 2615:1964 and 2615-1/-2:1992.

DIN EN 10253-2:2008-09 → DIN EN 10253-2:2021-11

  • value

    The diameter 101.6 has been dropped from the tee table - in the cap and elbow tables the standard continues to carry it.

    Examples: ⌀ 101.6

    editions 2008-09 and 2021-11 · Table 13 against Annex A

DIN 2615-2:1992-05 → DIN EN 10253-2:2008-09

  • not yet recorded

    For this period the edition is not available to us - no comparison is claimed.

These entries say what the standard has changed. They say nothing about material, pressure rating, scope of testing or the condition of an installed part — and nothing about whether an existing part can continue to be used. That assessment remains with the specific plant.

Tees by dimension – ask our warehouse

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How this data is compiled. This page does not reproduce a standard. It shows the dimensions you need for an enquiry, an order and installation – for sizes we supply, checked against documents from manufacturing works and suppliers and against our own range. Each value states what kind of value it is: specified by the standard, calculated by us or customary in the trade. The currently valid standard is binding. It is available from DIN Media or from your national standards body. How we select our sources and keep them up to date: About this knowledge.

Technical basis: DIN EN 10253-2:2026-07 (butt-welding fittings of non-alloy and alloy steel), EN 10204. All information without guarantee – the current standard texts and the manufacturers’ technical data sheets always prevail.