Our factory professionally produce seamless steel pipe 21.3mm-914mm and LSAW steel pipe 406mm-1420mm 1Seamless Steel PipeStandardASTM A1062Seamless Steel PipeMaterialGR.B3Seamless Steel PipeOD1/2”-30”4Seamless Steel PipeWTSCH10,SCH30,STD,SCH40,XS,SCH80.SCH1605Seamless Steel PipeUsageBoiler Use, Water Transport, Building, Machinery, Traffic, Aviation, Oil Development, etc.6Seamless Steel PipeOD ...