Solutions · Procurement and project service

Certificates and documentation

The material is delivered, the line is tight – and then the inspection body asks for the 3.1 certificate for the flange in line 17. Whoever then searches through a stack of two hundred pages has not ordered documentation, only certificates. The difference is the assignment: which paper belongs to which item, heat and line. That is the work we can take off your hands.

Certificates: inspection certificate 3.1 and 3.2 · test report 2.2 · to EN 10204
Declarations: supplier’s declaration (preferential origin) · certificate of origin · declarations of conformity and manufacturer declarations where available
Assignment: per item, heat and line · marking on the part · documentation sorted your way
Basis: information from sales and quality management, as of 10/2026 – which certificate type is available per article, we clarify with the order

Which papers there are – and what they attest

The inspection certificate 3.1 attests test results on the delivered heat, validated by the manufacturer’s authorised inspection representative, independent of the manufacturing department; the 3.2 additionally with an inspection representative of the purchaser or an inspection company. The test report 2.2 attests results of non-specific inspection. What distinguishes the types and when which is required is explained on the knowledge page inspection documents to EN 10204. Alongside these are the trade documents: the supplier’s declaration for preferential origin, the certificate of origin for export, manufacturer declarations and approvals where they exist.

Which type is available for which article depends on the manufacturer and the heat – a 3.1 for stock material is the rule for pipes, flanges and fittings, a 3.2 is agreed with the order. That is why the certificate requirement belongs in the enquiry, not in the complaint.

Assignment and traceability

Every part carries a marking – manufacturer, standard, material, heat (reading the marking). Our documentation links this marking to your item: item 17, line L-104, heat 4711, certificate number such-and-such. For projects we deliver the certificates sorted per line or construction phase, for call-offs per delivery, on request electronically. After processing the assignment is retained because the marking is transferred. And if a certificate is missing years later: lost inspection certificate describes what is then possible.

What we do not promise: that every certificate type is available for every article, and no standard commitment “always 3.1 included”. What we can deliver, we tell you when you enquire – and then deliver it assigned.

What we need from you

Not all of it – what you have. We ask for the rest.

Certificate type per item (2.2, 3.1, 3.2) or the specification from which it follows
Your item or line numbers if the documentation is to be sorted by them
Destination country and preference requirement for supplier’s declaration and certificate of origin
Desired form: paper with the delivery, PDF, collective folder per project

Frequently asked questions

Can I get an inspection certificate 3.1 with pipes and flanges?

Yes - certificates to EN 10204 (2.2, 3.1, 3.2 on request) are supplied per item with heat traceability; the documentation comes bundled with the delivery.

Does a 3.1 certificate cost extra?

That depends on the article; in the shop we list certificates as a separate item. We tell you what applies when you enquire.

Can I get certificates afterwards?

No – please tell us before delivery, ideally with the enquiry, whether you need a certificate. What is still possible with a lost certificate: lost inspection certificate.

Do you also deliver certificates for ASME material?

Yes – certificates to EN 10204 or to the requirements of the ASTM material standard, depending on what the specification demands. ASME and ASTM profiles.

Which papers does your project need?

Tell us the certificate types, items and destination country – or send the specification. We say what is available and assign it.

Send an inquiry

One item or one question → Send enquiry · Several items → Send parts list · It is urgent → Request express – the three entry points are on every page of the knowledge base (enquiry layer), repeated here in short. Send us what you have – designation, standard, quantity, date. We clarify the rest with you.

Your 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.

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As of 2026-10-03. Information from Otto Zickwolff GmbH (brochure, Rohrpost 2015/2016, sales and shipping, as of October 2026) – confirmed key facts: 18 000 m² of warehouse space, more than 20 000 articles, express delivery, own fleet with crane unloading. All other services apply “on request” and “depending on the project”; scope, deadlines and limits are clarified case by case. No prices, no delivery promises on this page.