Execution Standards and Corresponding Materials

GB/T8162-1999 (Galvanized Steel Pipe for Structural Use Theoretical Weight). Primarily used for general structures and mechanical structures. Representative materials (grades): Carbon steel, 20, 45 steel; Alloy steel Q345, 20C galvanized steel pipe prices, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.

2. GB/T8163-1999 ( Seamless Steel Pipe for Fluid Transportation). Primarily used for fluid transportation pipelines in engineering and large-scale equipment. Represents ceramic composite steel pipe materials (grades) such as 20, Q345, etc.

3. GB3087-1999 (Seamless Steel Tubes for Medium Pressure Boilers in Low-Wuxi Seamless Steel Tubes). Primarily used for industrial and domestic boiler pipelines transporting low and medium-pressure fluids. The representative materials are grades 10 and 20 steel.

GB5310-1995 (Seamless Steel Tubes for High-Pressure Boilers). Primarily used in power stations and Tianjin's nuclear power plant boilers for high-temperature, high-pressure fluid conveyance headers and pipelines. Representative materials include 20G, 12Cr1MoVG, 15CrMoG steel tubes, and scaffolding.