WELDNECK FLANGES

Standard

ASME B16.47 Series A (MSS SP-44)

Materials

Carbon steel: A105/N,  A266 CL2/CL4

Low temp carbon steel: A350 Gr. LF2, LF3

Low alloy steel: A182 Gr. F1, F5, F9, F11 CL1/CL2/CL3, F12 CL1/CL2, F22 CL1/CL3, F23, F91, F92

Stainless steel: A182 Gr. F304/L, F304H, F310, F316/L, F317/L, F321/H, F347/H, F44

Duplex stainless steel: A182 Gr. F51, F53, F60

Nickel alloys (Inconel)

Copper nickel (Cu/Ni)

Aluminum

Titanium

Specialty alloys

Size

26'' – 60”

Classes

150lbs – 300lbs – 600lbs – 900lbs

Flange facings

Raised Face (RF); Flat Face (FF); Ring-Type Joint (RTJ)