... Standard:ASTM,ASME,DIN,JIS Certificate:API,ISO,CCS C S SCH80 seamless pipe ProductionSteel pipeTypeSeamless and ERWSize1/2" To ... MaterialCarbon Steel: ASTM A53/A106,ASTM A179,API 5L X42/52/60Surface treatmentBlack painting, anti-rust varnish, anti-rust oil, ... paymentCertificateAPI, CCS,and ISO9001:2000Productivity200000 ton per yearKeywords:C S SCH80 seamless pipe,steel pipe,carbon steel seamless pipe