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　　Every Seamless Carbon Steel Pipe standard has some common terms, such as standard, specification, brand, delivery length, allowable deviation, technical conditions, chemical composition, quality certificate and so on. What do they mean?

　　1. Standard - Standard is a unified regulation of the concept of repetitive things. It is based on the comprehensive results of scientific and technological practice, approved by the competent authorities through consensus, and issued in a specific form as a common adherence criterion and basis. At present, Tianjin Seamless Carbon Steel Pipe product implementation standards include national standards (GB, GB/T), industry standards (YB), local standards and enterprise standards.

　　Specifications - Specifications refer to different sizes of Seamless Carbon Steel Pipe of the same variety or type. The ASTM A106 Schedule 40 Seamless Carbon Steel Pipe with Best Quality allowable deviation varies with the general size. In Tianjin Seamless Carbon Steel Pipe Product Standard, the specifications of varieties are usually arranged in order from small to large.

　　3. The brand name of Tianjin Seamless Carbon Steel Pipe is the name given to each product. The brand of sSeamless Carbon Steel Pipe is also called steel number. The grades of Seamless Carbon Steel Pipe in Tianjin can generally reflect the chemical composition. The grade not only indicates the specific variety of metal materials, but also roughly judges their quality according to it. In this way, the brand simply provides the common concept of the quality of steel pipes with rest, thus bringing great convenience to production, use and management.

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