EN 10204 Type 3.1 vs 3.2 Material Certificates

Select the certificate type before production and testing, then check more than the PDF title. A buyer still needs to reconcile the original inspection document, test unit, heat or lot, material markings, transfer records and delivered stock. Neither Type 3.1 nor Type 3.2 by itself approves the material for a project, replaces design or fabrication records, or proves that every test was witnessed. Use the Four-Gate Certificate Decision Route below to separate authority, validator, traceability and project release.

1. EN 10204 3.1 vs 3.2 at a glance

The current public scope page for BS EN 10204:2004 describes inspection documents for metallic products, including specific and non-specific inspection and document validation. Use the licensed standard, national implementation and contract to confirm the exact wording applicable to an order.

2. Begin with the order, not the PDF

A certificate cannot be evaluated in isolation from the purchase requirement. Start with the purchase order, material or product standard, drawing, project specification, approved vendor requirements and any regulatory rule that applies. Record the edition and amendment status. A familiar certificate title does not resolve a conflict between those documents, and a supplier should not choose Type 3.2 merely because it sounds more stringent.

For steel delivery context, ISO 404:2013 provides general technical delivery requirements and notes the role of the order and product standard. ISO 10474:2013 separately defines inspection documents for steel delivered against an order. These references are not a reason to assume automatic interchangeability with EN 10204; the contract must identify the required document system.

3. Authority gate: identify what actually controls

At the Authority Gate, list every document that can impose a certificate requirement and set a precedence rule. A product standard may call for one route while a project specification adds purchaser inspection. A regulation may designate an inspector. A purchase order may also ask for supplementary tests or information fields. Resolve these inputs before placing the material order; do not let a supplier's standard document package silently become the project requirement.

The output of this gate is a short, controlled certificate clause: document type, governing standard and edition, material/product identity, required test unit, inspection scope, validator route, notification, document language and distribution. If two requirements conflict, record the conflict and obtain an authorized disposition. Procurement convenience is not a technical resolution.

4. Validator gate: check roles and timing

For Type 3.1, verify that the document is validated through the manufacturer's authorized inspection function independent of the manufacturing department. For Type 3.2, verify the same manufacturer-side independence and the additional purchaser or officially designated inspector route required by EN 10204. The named person, organization, delegation and authority must fit the controlling requirement. A stamp, logo or digital signature alone does not establish that authority.

Plan Type 3.2 attendance before the relevant sampling, testing and final inspection. The independent party may need to review the order, identify or stamp samples, witness selected tests, review records or inspect material markings according to the agreed scope. This does not mean every Type 3.2 order requires the same activities or that every piece and every test is witnessed. The order, inspection plan and inspector's authorized scope control.

As one public service example, TÜV NORD's EN 10204 Type 3.2 overview describes activities such as sample identification, test witnessing and final material inspection. Treat that page as an example of a service route, not a universal inspection plan for every project.

5. Trace gate: connect results to the delivered stock

A certificate may contain plausible chemistry and mechanical values yet fail the receipt review if its identity cannot be connected to the delivered steel. Check the issuer, document number, revision, order or item reference, product description, grade, dimensions, delivery condition, quantity, heat/cast/lot, test unit and result fields. Then compare those identities with piece or bundle markings, tags, packing information and any controlled transfer record.

Stockholders and processors can split bundles, cut plates or transfer markings. The receiving route must preserve the link back to the original inspection document without implying that an intermediary created new test results. When identity is missing, duplicated, contradictory or altered without a controlled explanation, isolate the material and request evidence. Do not infer a heat number from grade, size, delivery date or visual similarity.

The public page for BS EN 10168:2004 covers information communicated in steel inspection documents and standardized designations. It helps organize the field review but does not replace the applicable product standard or project acceptance criteria.

6. Release gate: decide project acceptance separately

At the Release Gate, compare the traced material with the project requirement. Confirm grade, product form, dimensions, tolerances, delivery condition, required inspection results, supplementary tests, surface or through-thickness requirements where applicable, and any approved deviation. Confirm that the certificate type and validator route match the order. Record the disposition and the person authorized to release or reject the material.

Project release may also depend on documents outside EN 10204: declaration of performance and CE-marking information where the construction-product route applies, welding procedure and welder records, dimensional inspection, NDT, coating records, nonconformance closure and the manufacturing data record. A valid material certificate supports one part of that chain; it does not close the other gates.

The European Commission's Declaration of Performance and CE marking overview explains a distinct construction-product compliance route. Do not describe an EN 10204 certificate as a substitute for a required declaration or CE marking.

7. A controlled Type 3.1 route

A controlled Type 3.1 route begins with an order that names Type 3.1 and the applicable material requirements. The manufacturer assigns the test unit and performs the required inspection and testing under its procedures. Its authorized inspection representative, independent of the manufacturing department, validates the document. On receipt, the buyer checks both document content and the certificate-to-stock identity before project release.

8. Plan Type 3.2 before testing

Type 3.2 is most reliable when the purchase order, inspection and test plan, and notification route agree before manufacturing begins. Identify the additional authorized party and the activities that require review, hold, witness or record access. State notice periods and what happens if the representative waives attendance. Keep the waiver or release decision under the project's approved procedure rather than treating silence as approval.

The supplier should confirm material source, test location, sample-selection stage, expected dates, laboratory route, document format and marking check. The inspector should know which order and test unit are being covered. After inspection, the final document package should show the intended validation route and remain traceable to the shipped material. Any change in source, heat/lot, test location or test timing should be evaluated before continuing.

9. Handle a late Type 3.2 request without relabelling

A late request often arrives after Type 3.1 material is already in stock or after the original tests have been completed. Do not solve that problem by adding an independent signature to the existing Type 3.1 PDF or by changing the title. The historical sampling, test-unit control and inspection attendance cannot be recreated by document editing.

Instead, place the material on hold and ask the responsible project authority to define an acceptable recovery route. An independent body may be able to verify identity, review the original documentation, select traceable samples and witness additional testing. The resulting deliverable may be a survey or verification report describing equivalence to the intent of Type 3.2; it is not automatically an original EN 10204 Type 3.2 inspection certificate. Acceptance remains project-, material- and evidence-specific.

For example, ABS's EN 10204 material verification overview describes independent verification of existing Type 3.1 material to the intent of Type 3.2 and issuance of a survey report. ABS also states that EN 10204 verification is not the same as compliance with ABS Rules. This is one service example, not blanket permission to upgrade documents.

10. Receipt review checklist

Record the review result as accepted for the named purpose, held for clarification, rejected, or accepted with an authorized concession. Avoid a generic 'certificate checked' stamp. It does not show which requirement, line item, heat/lot, delivered quantity or exception was reviewed.

11. Warning signs that require a hold

12. What neither certificate proves

Neither document type proves that one material is inherently better than another. The certificate records inspection results and a validation route for a defined product/test unit. It does not select the grade, determine design suitability, verify every delivered piece, guarantee service life, prove corrosion resistance in the project environment or eliminate the need for receipt inspection. Those conclusions require their own requirements and evidence.

Neither document automatically proves compliance with a building code, class rule, pressure equipment route or construction-product regulation. It does not approve a material substitution, welding procedure, welder qualification, NDT result, dimensional inspection, coating system, packing condition or finished steel assembly. It is one controlled input to the fabrication ITP and manufacturing data record, not a replacement for them.

13. Copy-ready order and ITP wording

Use the following structure as a drafting aid, then adapt it to the licensed standard, product standard, project specification and contract. It is not legal wording and does not define an inspection scope by itself.

Connect the clause to East Baoyu's Steel Fabrication ITP guide so certificate receipt, identity checks and downstream fabrication records appear at defined inspection points. Use the Project Acceptance and Manufacturing Data Records guide to plan final record assembly without treating the material certificate as the entire MDR.

14. What to send East Baoyu

For a steel structure inquiry, send the drawings and specifications that define the material, product form, dimensions, delivery condition and intended certificate type. Include the purchase or project clause, applicable standard and edition, required tests, test-unit expectations, inspection authority, ITP/hold points, destination and document-submission requirements. If material is already in stock, include the original inspection document, clear marking photos, stock identity and any split or transfer record.

Mark whether the request is a new order, pre-award clarification, receipt review or late Type 3.2 recovery. Do not send confidential customer certificates through an unapproved channel. Ask which evidence is available for the exact material and fabrication scope; no certificate, test or third-party service is assumed in this article.

Use the Steel Structures, Evidence Center and Contact pages to frame the request and identify the relevant commercial and engineering contacts.

Share drawings and specifications

Send the controlled material clause, drawings and available certificate/traceability package. East Baoyu can then clarify the proposed supply scope, document route, evidence availability and unresolved project inputs without treating an unverified certificate as acceptance.

Open WhatsApp: +86 130 1228 3281

Email the material package: info@eastbaoyu.com

Frequently asked questions

Is EN 10204 Type 3.2 always better than Type 3.1?

No. Type 3.2 adds a validation party; it does not create a higher material grade. The correct route is the one required by the order, product standard, project specification and applicable regulatory basis.

Can a Type 3.1 certificate be upgraded by adding a third-party signature?

Not automatically. A signature added after testing does not recreate the required authority, sample control, witnessing or validation route. An authorized recovery plan may produce an independent verification report, but that is not automatically an original Type 3.2 certificate.

Does Type 3.2 mean every test is witnessed?

No. The agreed order, inspection plan and inspector scope determine the attended activities. Do not infer universal 100% witnessing from the certificate type.

Who signs a Type 3.1 certificate?

The EN 10204 route uses the manufacturer's authorized inspection representative independent of the manufacturing department. The buyer should verify the controlled document and role rather than relying only on a visible signature.

What should I check when material arrives?

Check the order requirement, original document identity, validator route, grade and product form, dimensions, delivery condition, test unit, results, heat/lot, markings, transfer records, quantity, deviations and the separate project-release requirements.

Does a material certificate replace CE marking, an ITP or an MDR?

No. Those routes have different purposes. A material certificate is one input to receipt and fabrication control; it does not replace a required declaration/CE route, inspection plan, fabrication records or final manufacturing data record.

Related East Baoyu resources

Steel Structures | Engineering Articles

Evidence Center | Contact East Baoyu

Steel Fabrication ITP | Project Acceptance and Manufacturing Data Records

Material Grade Substitution | Project Document Register

Export Packing for Solar Mounting and Steel Components | Steel Structure Engineering

Research & Methods | Quality and Project Delivery Articles

References and scope notes

Official public sources were checked on 28 July 2026 and are paraphrased within their public scope. The licensed EN text and any referenced paid standards were not reproduced. Users must verify the required edition, amendments, national implementation, product standard, project specification, purchase order, inspection plan and named authorities. Service-provider examples illustrate possible inspection routes and are not universal requirements. This guide is not legal advice, a certificate review for a specific heat/lot, a conformity assessment, a class approval, a material release or a commercial commitment.

BS EN 10204:2004 public scope | BS EN 10168:2004 public scope

ISO 10474:2013 | ISO 404:2013

ISO 404:2013/Amd 1:2022 | TÜV NORD Type 3.2 overview

TÜV UK material inspection | ABS EN 10204 material verification

European Commission DoP and CE marking | East Baoyu Steel Structures