Based on different connection means between flanges and pipes, flange can be divided into 5 main types, which are weld neck flange, threaded flange, socket weld flange, loose plate flange, and slip on weld flange. Among them, loose plate flange is a combination of two types of flanges.
Die forging, Machining
Power generation, petroleum, natural gas, chemical, shipbuilding, heating, papermaking, metallurgy
1. Loose Plate Flange(Butt Welding)
Loose plate flange: 3/8"-48"
American Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500
European Series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40
Flange Facing Types
American Series: Flat Face(FF), Raised Face(RF), Tongue(T), Groove(G), Female(F), Male(M), Ring Joints Face(RJ)
European Series: Type A(Flat Face), Type B(Raised Face), Type C(Tongue), Type D(Groove), Type E(Spigot), Type F(Recess), Type G(O-Ring Spigot), Type H (O-Ring Groove)