... that customers require. Forged Steel Flanges:* ASME/ANSI B16.5 : WELDING NECK FLANGE, SLIP-ON FLANGE, BLIND ... 400 , 600 , 900, 1500 , 2500* ASME/ANSI B16.47(SERIES A & B) : WELDING NECK FLANGE, BLIND FLANGE ... 150, 300, 400 , 600 , 900* ASME/ANSI B16.36 : (ORIFICE FLANGES) WELDING NECK FLANGE, SLIPON FLANGE, ... 400 , 600 , 900, 1500 , 2500* ASME/ANSI B16.48:( Figure-8 blanks)Pressure Class :150, 300, 400 ...