What are the carbon steel pipe sizes

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The commonly used carbon steel pipe material size is 20#(GB/T8163), 20G(GB5310). 20g and 20#(GB9948) are rarely used. It must be 100%UT if it is used for Class A pipes; Stainless tube commonly used steel is 304, 316L, 316Ti and so on. Hope to help you, hope to adopt. Carbon steel pipe size specification list: dn100(108/114, 108 generally not used) (dn125 pipe with an outer diameter of 140 is generally not used) dn150, dn200, dn250, dn300, dn350(355/377), DN400, DN450, DN500, DN550, DN600.

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