... , SSAW, Galvanized Steel Pipe, Electric-resistance Welded Steel Pipe, Electric-fusion Welded Steel PipeSpiral Welded Steel Pipe, Hot-rolling Seamless Pipe, Cold-rolling Seamless PipeStandardASTM, DIN ... , GB, BS, JIS, ASME, API, AISI,, ANSIGradeA333 GR3,GR6A335 P5 ...