... 1)welded pipe 2)SIZE:21.3--1250mm 3)Thickness:1.8--60mm 4)API5L.ASTM-A53,BS1387 ... .27mmMaterialQ195,Q215,Q345,20#,10#,16Mn.etcStandardAPI5L.ASTM-A53,BS1387-85,JIS-G3444,GB/T3091- ... ,D40,D58,D60,N80,CrB,X42,X46,X52,X56,L245,L290,L360,12Cr1MoWvTIB,J55,K55, ... 321,316,3161LengthAs per client requirementUsagePetrol,gas,water pipe,construction,chimney potProcessing techniqueThreading,coupling,necking,punching ...