... ,SGP,STD,XS,XXS Standard: ASTM,DIN,BS Material:ASTM API 3PE anticorrosive steel pipe with good quality :Certificate:ISO9001:2000 ... steel,carbon steel,alloy steelStandard: ANSI,JIS,BS,DIN,ASME,API,GB,ectProcess: Cold Draen,Cold Rolled,EFW,ERW,Hot Rolled ... Industrial Co.,Ltd is the professional manufacturer and exportor of flange,valve and pipe fitting.With the rich experience of making ...