... #,300#,400#,600#,900#,1500#,2500# Specification Carbon Steel ASTM A105/A694 F42/46/52/60/A350 LF2 ... /F5/F9/F11/F22/F91/Etc. Duplex stainless steel ASTM A182 F51/F53/F55/F60 Nicke alloys Nickel ... , Incoloy 825/800 Cu-Ni 90/10,70/30Forged Steel Flanges:* ASME/ANSI B16.5 : WELDING NECK FLANGE, ... 400 , 600 , 900, 1500 , 2500* ASME/ANSI B16.47(SERIES A & B) : WELDING NECK FLANGE, BLIND FLANGE. Pressure Class : ...