When purchasing steel, a material certificate and a certificate of conformity are two different documents, but usually both are required as they are crucial documents for ensuring steel quality.
The certificate of conformity is relatively simple, mainly containing basic information such as product name, model, specifications, batch number, quantity, and a "qualified" mark. Steel certificates of conformity are sometimes colloquially referred to as quality certificates.
In addition to basic information, the material certificate details key data such as the steel's chemical composition and mechanical properties (e.g., yield strength, tensile strength). It is an important basis for understanding the steel's performance.
The material certificate provides detailed performance data for the steel, forming the foundation for quality traceability and technical verification. For export trade, a material certificate conforming to international standards (such as EN 10204) is a core document.

Time：10/07/2026 16:45:10

Answers

• 
  What's the difference between a material certificate and a certificate of conformity when purchasing steel. are both necessary? 10/07/2026 09:44:41
• 
  Do fire-fighting steel pipes need to be galvanized? 10/07/2026 05:41:10
• 
  Besides thickness, what other methods are there for judging the quality of galvanized pipes? 09/07/2026 11:23:59
• 
  Are there any hidden dangers associated with using thin-coated zinc pipes. what is the acceptable thickness for a galvanized layer on steel pipes? 09/07/2026 04:13:54
• 
  Why are there such large price differences between different suppliers for steel pipes of the same specifications? 08/07/2026 11:42:05