Joining without welding
Joining, repairing, transitioning pipe – without welding
The plant is running, the pipe is leaking. The line has to be extended, but welding is prohibited. Two systems meet, and nobody remembers which multilayer pipe is in the wall. For these situations there are fittings that clamp on the pipe instead of welding or pressing – in malleable iron, brass and stainless steel, mounted with standard tools. This page sorts them by the question that comes in: not “do you have Gebo” but “what is broken, what should it become”.
Choose your situation – the suitable joint without welding
- Solution families
- Compression fittings · repair clamps and bands · tapping clamps · Multigebo (multilayer pipe) · wide-range couplings
- Pipe types
- Steel (threaded pipe), boiler tube, copper, stainless, PE, PP, PVC-C, multilayer pipe, cast iron, fibre cement
- Manufacturers
- Gebo (stocked) · GF Piping Systems (PRIMOFIT, WAGA)
- Basis
- Manufacturer data (evidence class H), range from the article master – no installation instructions
Which situation do you have?
Every situation has a matching solution family. The table names the family, the pipe types and the diameter range; the individual pages give service limits per medium and the range.
Show full table · more than 20 rows
| Solution | Pipe | Outside diameter | Task | Duration | Availability |
|---|---|---|---|---|---|
| Compression fittings for steel pipe Gebo · 150 / 220 · NBR | steel pipe (threaded pipe) | 17.2–114.3 mm | joining two pipe ends · connecting to a thread · transition to another pipe material | lasting | in stock |
| Compression fittings for steel pipe Gebo · 151 / 222 · EPDM | steel pipe (threaded pipe) | 17.2–114.3 mm | joining two pipe ends · connecting to a thread · transition to another pipe material | lasting | available on request |
| Compression fittings for boiler tube Gebo · 15S / 22S | boiler tube (black steel tube) | 20–108 mm | joining two pipe ends · connecting to a thread | lasting | available on request |
| Compression fittings for PE pipe and steel-PE transition Gebo · 153/155 · 22P (NBR) · 156 / 223 (EPDM) | PE pipe (PE 80, PE 100, PE-Xa, SDR 11) | 20–110 mm | joining two pipe ends · transition to another pipe material · connecting to a thread | lasting | available on request |
| HTB compression fittings for gas inside buildings Gebo · 180 / 225 · HTB | steel pipe (threaded pipe) | 21.3–114.3 mm | joining two pipe ends · connecting to a thread | lasting | available on request |
| Brass compression fittings for hot drinking water Gebo · 313 / 314 · EPDM | steel pipe (threaded pipe) | 21.3–76.1 mm | joining two pipe ends · transition to another pipe material | lasting | available on request |
| Compression fittings for PP and PVC-C pipe Gebo · 330 (PP-R/PP-RCT) / 331 (PVC-C) | PP-R/PP-RCT pipe (DIN 8077/8078), PVC-C pipe (DIN 8079/8080) | 16–50 mm | joining two pipe ends · transition to another pipe material | lasting | available on request |
| Repair clamps Gebo · DS · 252 / 260 | steel pipe (threaded pipe) | 17.2–114.3 mm | leaking: hole, crack, porous spot | lasting | in stock |
| Brass repair clamps for copper tube Gebo · MD · 620 | copper tube (also stainless tube with the same OD) | 10–54 mm | leaking: hole, crack, porous spot | lasting | in stock |
| Tapping clamps Gebo · ANB · 261 | steel pipe (threaded pipe) | 17.2–114.3 mm | adding a branch later | lasting | available on request |
| Stainless steel repair bands Gebo · gebounifix mini (1.4301) | steel, boiler, copper, stainless tube – PE, PVC, multilayer pipe (short-term, cold water) | 21–93 mm | leaking: hole, crack, porous spot | lasting / short-term (until the proper repair) | in stock |
| Stainless steel repair bands Gebo · gebounifix middle (1.4301) | steel, copper, stainless, boiler, cast iron, ductile iron, fibre-cement pipe – PE, PVC (short-term) | 32–118 mm | leaking: hole, crack, porous spot | lasting / short-term (until the proper repair) | available on request |
| Stainless steel repair bands Gebo · gebounifix maxi 1/2/3 · 1.4301 | steel, cast iron, ductile iron, fibre-cement, PE, PVC pipe (cold water, buried) | 48–1000 mm | leaking: hole, crack, porous spot | lasting | available to order |
| Stainless steel tapping saddles Gebo · gebounifix · 1.4301 | metal and plastic pipe (band rubber-lined) | 88–285 mm | adding a branch later | lasting | available on request |
| Universal fittings for multilayer pipe (Multigebo) Gebo · 320 | multilayer composite pipe of various makes (DIN 16836, EN ISO 21003 type M) – 16 and 20 mm also PE-Xc/PE-RT type P and PE-X | 14–32 mm | leaking: hole, crack, porous spot · joining two pipe ends · transition to another pipe material · connecting to a thread | lasting | in stock |
| Compact adapters (Minigebo) Gebo · 303 / 304 | steel pipe (threaded pipe) | 17.2–33.7 mm | connecting to a thread · joining two pipe ends | lasting | in stock |
| Compression fittings for steel pipe GF · PRIMOFIT | steel pipe (threaded pipe), boiler tube with seal set | 17.2–114.3 mm | joining two pipe ends · connecting to a thread · transition to another pipe material | lasting | in stock |
| HTB compression fittings for gas inside buildings GF · PRIMOFIT FIREJOINT (HTB) | steel pipe (threaded pipe) | 21.3–60.3 mm | joining two pipe ends · connecting to a thread | lasting | available on request |
| Compression fittings for PE pipe and steel-PE transition GF · PRIMOFIT PE | PE pipe (SDR 11 and 17.6), PE-Xa (S 5), transition to steel pipe | 20–63 mm | joining two pipe ends · transition to another pipe material · connecting to a thread | lasting | available on request |
| Repair clamps GF · PRIMOFIT 775.722 / 775.712 | steel pipe (threaded pipe) | 21.3–114.3 mm | leaking: hole, crack, porous spot | short-term (until the proper repair) | in stock |
| Brass repair clamps for copper tube GF · PRIMOFIT 775.723 | copper tube (also stainless tube with the same OD) | 10–54 mm | leaking: hole, crack, porous spot | short-term (until the proper repair) | in stock |
| Stainless steel repair bands GF · PRIMOFIT 724.856 | steel, stainless, copper, grey and ductile cast iron pipe | 21–117 mm | leaking: hole, crack, porous spot | short-term (until the proper repair) | in stock |
| Tapping clamps GF · PRIMOFIT 775.732 | steel pipe (threaded pipe) | 21.3–60.3 mm | adding a branch later | lasting | available on request |
| Wide-range couplings GF · WAGA MULTI/JOINT 3000 Plus | grey and ductile cast iron, steel/stainless, copper, GRP, PVC-U, PP, PE, ABS pipe (plastics with support sleeve) | 46–637 mm | joining two pipe ends · transition to another pipe material · leaking: hole, crack, porous spot | lasting | available on request |
Four ways to the solution
- Leaking – hole, crack, porous spot: repair clamp or stainless repair band, on multilayer pipe Multigebo with length adjustment. Lasting on metal pipe, short-term on plastic pipe.
- Joining and extending – two pipe ends, a new piece between them: compression fittings for steel pipe and boiler tube, for PE, PP and PVC-C.
- Transitioning – steel to PE, multilayer pipe to thread, cast iron to steel underground: transition fittings, Multigebo with male thread, wide-range coupling.
- Connecting and branching – a thread at the pipe end, an outlet in the middle: fitting with male or female thread, compact adapter, tapping clamp.
If you do not know which family fits, use the tool “Which solution fits?”: enter pipe type, outside diameter, problem and medium – it names the solutions that meet all four conditions.
Where clamping ends
Compression fittings are resistant to tension and shear and built for permanent use – within the service limits the manufacturer names per medium: cold water up to 16 bar, heating water 80 to 90 °C at 6 bar, gas outside buildings 5 bar, inside only with the HTB version. Steam (except with the FKM seal of GF PRIMOFIT up to 150 °C), solvents, higher temperatures and large nominal sizes in industrial piping remain welding and flanges. Three rules that make every inquiry faster:
- Measure the outside diameter, do not guess the nominal size – one inch is 33.7 mm on threaded pipe, 31.8 mm on boiler tube.
- A repair clamp is a repair, not a new build – it seals what is otherwise sound.
- Gas only with the version approved for it – inside buildings that means HTB.
What we supply
Gebo compression fittings of types A, I, O, T up to 2 inch, repair clamps DS and MD, EPDM drinking-water seals for retrofitting, gebounifix mini repair bands, Multigebo kits and Minigebo are stock items; GF PRIMOFIT couplings, transitions, tees and the GF repair ranges too. The flange versions from 2 1/2 inch, the gebounifix repair boxes and the remaining series (HTB, brass 313/314, PE series, polygebo, gebounifix middle and maxi, WAGA) we procure on request. The standard names dimensions. What is listed here, we carry – from stock or to order; how fast, we clarify on request.
Further in the topic
The pages of the topic: Compression fittings for steel pipe and boiler tube · Compression fittings for plastic pipe and transition · Repair clamps, repair bands, tapping clamps · Multigebo for multilayer pipe · Tool: which solution fits? · Frequently asked questions
From the knowledge base: Press systems – when pressing is allowed · Multilayer and push-fit systems · Malleable-iron threaded fittings · Pipe dimensions to standard
Frequently asked questions
How do I join or repair a steel pipe without welding?
Choose your situation at the top – leaking pipe, extending a line, joining two systems – and you reach the suitable pipe joint without welding: compression fitting, repair clamp or tapping clamp; dimensions, approvals and installation are on the pages below.
Does a clamped joint hold permanently?
Yes – the manufacturers release their malleable-iron and brass compression fittings for permanent use, resistant to tension and shear, within the service limits per medium. Repair bands on plastic pipe are the exception: short-term only there.
Do I need special tools?
No. Compression fittings are tightened with standard tools (Gebo gives torque guide values in the installation instructions), gebounifix middle and maxi with a ring or open-end spanner, Minigebo and the repair clamps with a hex key. That is the difference from a press system.
May I repair gas with it?
Outside buildings with the series approved for it (DIN 3387-1); inside buildings only with the HTB version – and the work belongs to the licensed installer.
What about multilayer pipe of unknown origin?
Multigebo is built for that: one body per outside diameter, support sleeves per inside diameter, gauge in the kit – without knowing which manufacturer made the pipe.
Leaking pipe, extending a line, joining two systems?
Send us what you have – pipe type, measured outside diameter, medium, drawing. We tell you which solution fits from stock and what is procured.
Send an inquiryYour inquiry to Zickwolff
Send us what you have – designation, standard, quantity, date. We will clarify the rest with you.
One item or a question
Send inquiry
Not in stock? We procure it – single items too.
Designation, standard and quantity are enough.
Several items
Send bill of materials
200 items? One parts list is enough – we deliver complete.
Attach it as a file.
Helpful if already known: project and country, date needed, certificates, packaging and language of the packing lists. If anything is missing, we will ask.
It is urgent
Request express
When do you need it? Express delivery, to the site if required.
Tell us by when you need the material – we will tell you what is possible.
As of 2026-10-03. Manufacturer data from the Gebo sub-catalogues 2026 (gebooriginal, gebounifix, multigebo, minigebo, polygebo), the Gebo general catalogue 2026/27 and the Gebo product data (gebo.group), the GF PRIMOFIT technical catalogue (2025) and the GF WAGA MULTI/JOINT 3000 Plus technical manual – evidence class H (authorised distributor). Service limits are manufacturer data; the installation instructions of the respective series prevail. Availability per our article master (as of 2026-09-04), without quantities. No installation instructions, no legal advice – gas installations belong in the hands of the licensed installer.