Weld neck flanges (WN flanges) are also known as the high neck flanges that are designed to be joined to a piping system by butt welding. the wn flange are relatively expensive because of its long neck, but is preferred for high stress applications. The neck, or hub, transmits stresses to the pipe, reducing stress concentrations at the base of the welding neck flanges. The gradual transition of thickness from the base of the hub to the wall thickness at the butt weld provides important reinforcement of the Weld Neck flange. The bore of the weld neck flanges matche the bore of the pipes, reducing turbulence and erosion.
Size Of Weld Neck Flanges (WN flanges):
1/2" (15mm) NB -- 24" (600mm) NB (ABOVE 24" NB MAKE TO ORDER BASIS)
Nominal Pressure Range:
150# - 2500#
Schedule Of Weld Neck Flanges (WN flanges):
5S, 10S, 10, 20, 40S, 40, STD, 60, 80S, 80, XS, 100, 120, 140, 160, and XXS
Face Type Of Weld Neck Flanges (WN flanges):
Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Grades Available Of Weld Neck Flanges (WN flanges):
CARBON STEEL: ASTM A 105, LF 2, LF 3
ALLOY STEEL: ASTM A182 GR. F1, F 5, F 9, F 11, F 22, F 91
STAINLESS STEEL: ASTM A182 GR. 304/304L, 316/316L, 310, 347, 321, 904L
NON FERROUS METALS: COPPER, HASTELLOY C 276, INCONEL 600/625/825, BRASS, MONEL 400/500 ,TITANIUM, TANTALUM, BRONZE, ALUMINIUM, HIGH SPEED STEEL, ZINC, LEAD
Weld Neck Flanges Standards:
ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
B.S: BS4504, BS4504, BS1560, BS10
Die forging, Machining.
Application for weld neck flanges (WN flanges):
Natural gas,chemical,petroleum,ship building,marine,paper making, metallurgy, electric, power, boiler , etc.
Yaang Pipe Industry, as a first class manufacturer of weld neck flanges (WN flanges) in China, supplys a variety of stainless steel flanges to satisfy our customers’ specifica requirements, which include different size ,different schedule, different pressure and different finish faces. Our products are produced strictly according to the required standard. Our raw material for threaded flanges all are purchased from big steel companies which can make sure the material in a high quality.
If any inquiry about products, please feel free to contact us [email protected]
Tel No：+86-18267732328 / Email:[email protected]
Address：Longwan District, Wenzhou, Zhejiang Province, China.
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Yaang Pipe Industry Co., Ltd. is an international supplier of piping solutions for flange, butt welding fittings, socket welding fittings and threaded fittings. Our products are widely used in different industrial fields, including oil and gas, chemical industry, petrochemical industry, power plant, pulp and paper industry, environmental and water conservancy engineering, engineering projects, etc.