300# ANSI B16.5 ASTM A181 RF Reducing Weld Neck Flange 

Followings are the definition, information and application of  various types of flanges:

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.

300# ANSI B16.5 ASTM A181 RF Reducing Weld Neck Flange

ANSI B16.5 ASTM A181 RF Reducing Weld Neck Flange Pressure:

class150,class300,class600.

300# ANSI B16.5 ASTM A181 Reducing Weld Neck Flange Sealing Face:

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

300# ANSI 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

Hebei Haihao Group is a professional manufacture factory specialized in producing reducing weld neck flange and other flanges.We have advanced production lines. Products are manufactured by forging, cold pressing, cold forming, hot extrusion, heat treatment, polishing, rubbing, machining and chrome finishing.If you have any need about reducing wed neck flange and other products,welcome to contact us.