ASME/ANSI B16.5: WELDING NECK FLANGE, SLIP-ON FLANGE, BLIND FLANGE, HIGH HUB BLIND FLANGE, SOCKET WELD FLANGE, LAPJOINT FLANGE, THREADED FLANGE, RING TYPE JOINT FLANGE.
Pressure Class : 150, 300, 400 , 600 , 900, 1500 , 2500.

ASME/ANSI B16.47 : WELDING NECK FLANGE, BLIND FLANGE. (SERIES A & B).
Pressure Class : 75, 150, 300, 400 , 600 , 900.

ASME/ANSI B16.36 : (ORIFICE FLANGES) WELDING NECK FLANGE, SLIPON FLANGE, THREADED FLANGE.
Pressure Class : 300, 400 , 600 , 900, 1500 , 2500.

ASTM/ANSI B16.48:( Figure-8 blanks)
Pressure Class : 150, 300, 400 , 600 , 900,1500, 2500.

MSS SP44 : WELDING NECK FLANGE, BLIND FLANGE.
Pressure Class : 300, 400 , 600 , 900.