... /30 Forged Steel Flanges: ASME/ANSI B16.5: WELDING NECK FLANGE, SLIP-ON FLANGE, BLIND FLANGE, HIGH HUB BLIND FLANGE, SOCKET WELD ... NECK FLANGE, BLIND FLANGE. Pressure Class: 75, 150, 300, 400, 600, 900 ASME/ANSI B16.36: (ORIFICE FLANGES) WELDING NECK ... 400, 600, 900 API 6A: WELDING NECK FLANGE, THREAD FLANGE, BLIND FLANGE. Pressure: 2000Psi, 3000Psi, 5000Psi, 10000Psi, 15000Psi, 20000Psi, 25000Psi ...