API 5L,ISO certificate OD:219-3600 mm,WT6-30mm manufacturer,SGS Inspection material:X42-X80,Q235,Q345,API 5L Gr.B,A252 Gr.3 API Fluid Pipe DescriptionGradeX42-X80Outer Diameter219-3600mmWall Thinkness6-30mmStandardASTM A252, ASTM A53, API 5L PSL1/PSL2WT ScheduleSCH10S,SCH20,40,80,160,XS,STD,XXSProcess TechnicsSAWSurface Treatment2PE/3PE,2PP/3PP OR AS REQUIREDCertificationISO9001,API,Raw material ...