Reducing weld neck flange is a special flange used to connect two different diameters pipes in a piping system, commonly it is joint together with a regular standard flange.We mainly produce reducing weld neck flange according to standards ASME/ANSI B16.5,BS4504,EN1092-1,DIN,UNI, GOST/ГОСТ 12820-80 etc.

Class 300 ASME B16.5 A105 RF Reducing Weld Neck Flange

ASME B16.5 A105 RF Reducing Weld Neck Flange Pressure:

class 150,class 300,class 600.

Class 300 ASME B16.5 A105 Reducing Weld Neck Flange Sealing Face:

Raised Face(RF),Flat Face(FF),Ring Type Joint(RTJ).

Class 300 ASME B16.5 RF Reducing Weld Neck Flange Material:

Carbon steel: ASTM A105, A181, ASTM A516 GR.60, GR.70, ASTM A694 F42, F46, F52, F56, F60, F65, F70, ST37, ST45.8, C22.8, S235, S235JRG2, P235GH, P245GH, P250GH, P265GH, P355GH, S355J2, 16MN, 20MN, Q235, 20#, CT20, SS400.

Stainless steel: ASTM A182 F304, F304L, F316, F316L, F321, F321H, F304H, F316H, F347H, 1.4301, 1.4306, 1.4401, 1.4404, 1.4541, 1.4571, SUS304, SUS316.

Alloy Steel: ASTM A350 LF2, CL1/CL2, ASTM A182 F5, F9, F11, F12, F22, F91.

Duplex Steel: S31803  /  F51  /  S32205  /  F60  /  1.4462

Super Duplex: S32750  /  F53  /  1.4410  /  S32760  /  F55  /  1.4501

Haihao Group Flange Products Certificate:

BS EN10204 3.1 MTC,ABS,PED 97-23-EC,CE,ISO,API approved.

Haihao Group Flange Products Certificate

Our group was founded in 1982,which is widely manufacturing several of flanges.We are a professional manufacture factory specialized in producing reducing weld neck flanges and other types of flanges.We have advanced production lines. If you have any need about reducing weld neck flange and other products,welcome to contact us.