EN 10204 type 3.1 certificates
Manufacturer-validated specific-inspection results, their product scope and the distinction between 3.1 and 3.2 documentation.
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An EN 10204 Type 3.1 inspection certificate declares compliance with the order and reports results from specific inspection. The manufacturer’s authorized inspection representative validates it independently of the manufacturing department. Type 3.2 adds a second validation role. DLSS inspection-certificate explanation
Compare the inspection basis and validation in all four EN 10204 document types.
Original example: identity and quantity after cutting
Suppose two certified plates yield six blanks each. Plate A comes from heat H100 and plate B from H200. A later packing list attributes eight blanks to H100 and four to H200. The total is still 12, but the heat counts conflict with the cutting record. Identifying the blanks requires evidence that connects them to their parent plates.
If only ten blanks ship, the certificate still represents the original inspection. The partial quantity describes the shipment, while the parent identities determine which certificate results apply.
Specific results are not universal piece-by-piece testing
Specific inspection covers the products to be delivered or the test units they belong to. The product specification determines what to test and which material the results represent. Heat chemistry, tensile specimens and nondestructive examination can cover different groups of material. Specimen direction, dimensions, temperature and test method can also affect how a result applies. EN 10204:2004, clauses 2.2 and 4.1, public SIST preview
Named producer example: DIMO 2311
Dillinger's August 2025 data sheet for DIMO 2311 lists heat analysis, dimensional and surface inspection, surface hardness on each rolled plate and ultrasonic inspection under the stated default conditions. Dillinger documents these results in a Type 3.1 certificate unless agreed otherwise. The sheet lists a default surface hardness of 280–325 HBW. Its approximate tensile-strength correspondence comes from a hardness conversion, so it carries the evidence of the hardness test and the assumptions of the conversion. Dillinger DIMO 2311, pp. 1–3
Limits of the conformity claim
A Type 3.1 certificate covers the identified material in its stated delivery condition. Machining, forming, welding or coating can introduce requirements that need separate evidence. DLSS processed-product scope
Related Certificates of conformity and Material test reports.