... sch5s-XS,XXS Standard:ASTM,ASME,DIN,JIS Certificate:API,ISO,CCS SCH 40 steel seamless pipe ProductionSteel pipeTypeSeamless and ERWSize1 ... ISO, GB, SH, AND HG etc MaterialCarbon Steel: ASTM A53/A106,ASTM A179,API 5L X42/52/60Surface treatmentBlack painting, ... ISO9001:2000Productivity200000 ton per yearKeywords: SCH 40 steel seamless pipe,steel pipe,carbon steel seamless pipe SCH 40 steel seamless pipe