API 6A:  WELDING NECK FLANGE, THREAD FLANGE, BLIND FLANGE.

Pressure:  2000Psi, 3000Psi, 5000Psi, 10000Psi, 15000Psi, 20000Psi, 25000Psi.
Size: 1/2"-48".

Material:

ASTM A105, ASTM A350, A694 F42/F46/F52/F60/F65,

ASTM A182 F304/304L, F316/316L, F321, F310,

ASTM A 182 F51/F53/F55.