ASTM B16.5 carbon steel flange 1.high pressure 2.high quality and low price ... 2"-80" 4.certificate:ISO9001:2008,API ASTM B16.5 carbon steel flange1) ANSI/ASME B16.5 Steel flange,Blind flange,carbon steel flange2) Method:free forging,die forging,rolling3) ... on,Weld Neck,Blind,Lap Joint,Socket Weld,Threaded,5) Material: Carbon steel:A105,ST37.2,S235JR,Q235,P250GH Stainless steel:F304,F316,316L6 ...