... as your request3. Specification:A106 carbon seamless steel pipeO.D.:73-508mm WT:10-30mm Carbon Steel Seamless PipeStandardANSI,ASTM ,API.DIN,GB.JISMaterialA106 Gr ... .0309,OD1/4"-40",13mm-1000mmWTSCH5,SCH10,SCH20,SCH40,SCH60,SCH80,SCH100,SCH120,SCH160,XXSUsageStructure Use,water transport,Building,Machinery,Traffic ...