300# ANSI B16.5 A182 F316 4inch RF Long Weld Neck Flange

300# ANSI B16.5 A182 F316 4inch RF Long Weld Neck Flange

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

Weld Neck Flange Slip On Flange Blind Flange Threaded Flange
Plate/Plain Flange Socket Weld Flange Orifice Flange Spectacle Blind Flange
Lap Joint/Loose Flange Long Weld Neck Flange Reducing Flange Rolled-Forging Ring Flange
Flange-Olet Tube Sheet/Tubesheet Anchor Flange Non-Standard/Custom Flange

Weld neck flanges attach to the pipe by welding the pipe to the neck of the pipe flange.There are two designs.The regular type is used with pipes.The long type(long weld neck flange) is unsuitable for pipes and is used in process plant.We mainly produce long weld neck flange according to standards:ANSI/ASME B16.5,BS4504,EN1092-1,GOST/ГОСТ 12820-80,MSS SP-44,DIN,UNI etc.

300# ANSI B16.5 A182 F316 4inch RF Long Weld Neck Flange

300# ANSI B16.5 A182 F316 4inch RF Long Weld Neck Flange

ANSI B16.5 A182 F316 4inch RF Long Weld Neck Flange Pressure:

Class 150,class 300,class 600.

300# ANSI B16.5 A182 F316 RF Long Weld Neck Flange Size:

1/2″-24″ DN15-DN600.

300# ANSI B16.5 A182 F316 4inch Long Weld Neck Flange Sealing Face:

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

300# ANSI B16.5 4inch RF Long 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

Haihao Group Flange Products Certificate

In Heibei Haihao Group,we are professional in producing 300# ANSI B16.5 A182 F316 4inch RF Long Weld Neck Flange and other types of flange products.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 long weld neck flange and other products,welcome to contact us.

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