... seamless carbon steel pipe: 1.in carbon steel 2.size from 48-219* 4.5-40mm 3.competitive prices 4.fast delive Carbon Steel seamless PipeStandardANSI,ASTM ,API ... .DIN,GB.JISMaterialA106 Gr A,B,A53 Gr B,ASTM A179,A106GrB,ASTM A53GrB,St42 ... 0309,OD1/4"-40",13mm-1000mmWTSCH5,SCH10,SCH20,SCH40,SCH60,SCH80,SCH100,SCH120,SCH160,XXSUsageStructure Use, ...