Japanese Standard (8)

 　　SGP represents galvanized steel pipe, corresponding to the domestic standard GB/T3091-93 "Galvanized Welded Steel Pipe for Low Pressure Fluid Transportation". STPG370 is a seamless steel pipe with a tensile strength of 370N/mm ^ 2 or higher according to the Japanese standard. Equivalent to China's No. 20 steel.

　　The 20 # seamless steel pipe is made from steel ingots or solid pipe blanks that are perforated into a capillary, and then hot rolled, cold rolled, or cold drawn. The 20 # seamless steel pipe plays an important role in China's steel pipe industry.



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