... Incoloy 825/800Cu-Ni 90/10, 70/30Forged Steel Flanges:* ASME/ANSI B16.5: WELDING NECK FLANGE, SLIP-ON FLANGE, BLIND FLANGE, ... .Pressure Class: 150, 300, 400, 600, 900, 1500, 2500* ASME/ANSI B16.47(SERIES A & B): WELDING NECK FLANGE, BLIND FLANGE.Pressure ... Class: 75, 150, 300, 400, 600, 900* ASME/ANSI B16.36: (ORIFICE FLANGES) WELDING NECK FLANGE, SLIPON FLANGE, THREADED FLANGE ...