Definition and purpose of 3.1 and 3.2 certificates12
The EN 10204-3.1 certificate is issued by the manufacturer to indicate that the manufacturer has completed all necessary tests and that the test results meet the specified standards. This certificate is often used to prove the quality of metal products, especially when the manufacturer is ISO 9001 certified and can issue 3.1 certificates on its own. EN 10204-3.2 certificates are issued by an independent third-party inspection body, which means that in addition to the manufacturer's declaration, a third-party body has inspected and verified the material to ensure that the material meets the requirements of the contract or specification.
Difference between 3.1 and 3.2 certificates
Different issuing bodies: 3.1 certificates are issued by the manufacturer or its authorized representative, while 3.2 certificates are issued by independent third-party inspection bodies.
Test result verification: 3.1 certificates contain the test results conducted by the manufacturer himself, while 3.2 certificates include additional testing and verification by a third-party inspection body in addition to the manufacturer's test results.
Different credibility: Since the 3.2 certificate has been independently verified by a third party, it has higher credibility, especially in critical applications.
Application scenarios
3.1 certificate: Applicable to general quality control needs. When the manufacturer is ISO 9001 certified and can complete all necessary tests by itself, the 3.1 certificate can be used.
3.2 certificate: Applicable to scenarios that require higher credibility, especially large equipment, pressure equipment and other products exported to Europe, which require raw material suppliers to provide EN 10204-3.2 certificates to prove that the raw materials used in the equipment meet European standards.
