Certificate of conformity
A certificate of conformity is a signed statement that a product or batch meets the stated standard or specification.
A certificate of conformity is a signed statement that a product or batch meets the stated standard or specification.
Definition
A certificate of conformity is a document, issued by a manufacturer or a third party, stating that goods meet a named standard, regulation or contract requirement. It is a declaration of compliance rather than a set of test data.
A plain example
A buyer ordering framing for an export project asks for a CoC along with the shipping documents. The certificate names the product, the batch, the standard and the issuer, and is signed and dated. It is filed with the order record.
Why it matters
Some customs offices and project teams ask for CoCs before accepting goods. They help show that what arrived is what was ordered and give a paper trail if a question comes up later.
Common confusion
A CoC is only as good as its issuer and its detail. It is different from a mill test report, which gives the actual measurements. A vague certificate that names no standard or batch tells you little. Ask who issued it and what it covers.
On a project
Check the issuer, the date, the product and batch details and the standard named. If the buyer's market has its own marking or documentation rules, ask for those requirements in writing.
Quick answers
- Is a CoC the same as test results? No. It states compliance. Test results are reported separately, for example in an MTR.
- Who can issue a CoC? A manufacturer, or a third party. What matters is what it names and who stands behind it.
- Is a CoC always required? It depends on the contract and the destination rules. Check with your buyer and customs adviser.
Related terms
Always check the project drawings and specification, and confirm requirements with the engineer of record and the local authority.
Questions people ask
Is a CoC the same as test results?
No. It states compliance. Test results are reported separately, for example in an MTR.
Who can issue a CoC?
A manufacturer, or a third party. What matters is what it names and who stands behind it.
Is a CoC always required?
It depends on the contract and the destination rules. Check with your buyer and customs adviser.
Sources and further reading
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