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Seamless steel pipes must be tested for mechanical properties. Seamless steel pipes are widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycle frames, and steel scaffolding used in construction. Steel pipes are used t
1. In the table, CS stands for carbon steel seamless pipe, applicable materials GB8163 "Seamless steel pipe for fluid transportation", GB3087 "Seamless steel pipe for low and medium pressure boilers", GB6479 "High-pressure seamless steel pipe for fertilizer equipment" GB9948 "Petroleum cracking" Use