... ,XS,XXS Standard: ASTM,DIN,BS Material:ASTM API 3PE anticorrosive steel pipe with good quality :Certificate ... steel,alloy steelStandard: ANSI,JIS,BS,DIN,ASME,API,GB,ectProcess: Cold Draen,Cold Rolled,EFW,ERW ... .,Ltd is the professional manufacturer and exportor of flange,valve and pipe fitting.With the rich ... experience of making and exporting flanges,our customers are ...