WN flange refers to a flange with a
cone neck and butt welded with the cylinder or pipe. It is an
integral flange.Welding neck flange is a kind of pipe fitting,
it refers to the flange with neck and a round pipe transition and
butt welded with the pipe. Butt welding flange is not easy to
deform, seal well, widely used, has the corresponding rigidity and
elasticity requirements and reasonable butt welding thinning
transition, welding distance from the joint surface is large, the
joint surface is free from welding temperature deformation. Butt
welding flange is not easy to deform, sealed well, widely used, has
the corresponding rigidity and elasticity requirements and
reasonable butt welding thinning transition, welding distance from
the joint surface is large, the joint surface from welding
temperature deformation, it takes a more complex cough body
structure, suitable for pressure or temperature fluctuations of the
pipeline or high temperature, high pressure and low temperature
pipeline, Generally used for PN greater than 2.5MPa pipe and valve
connection; Welding Neck Flange is
flanges that designed to be joined to a piping system by butt
welding. This kind of flange include lots of
specification.WN flange is generally made by forging or
forging process. When the steel plate or section steel
manufacturing, meet the following requirements: 1, butt welding
flange should be ultrasonic inspection, no layered defects; 2.
Should be cut into strips along the direction of steel rolling,
welded into a ring through bending, and the surface of the steel to
form a cylinder of the ring. Steel plate shall not be machined
directly into neck butt welding flange; 3. The butt weld of the
ring should adopt full penetration weld; 4. The butt weld of the
ring shall be subjected to post-welding heat treatment, and X-ray
or ultrasonic inspection shall be carried out, and X-ray inspection
shall meet the II requirements of JB4730, and ultrasonic inspection
shall meet the I requirements of JB4730.Product DescriptionProduct
Name304/316 Stainless Steel Flange and Pipe Fittings RF/RJ/FF/M/FM
ANSI/JIS/DIN/EN/BS/GOST Cl150/Pn10/Pn16 Forged Stainless Steel
Plain Welded FlangeSizeDN15-DN1200, biggest outside diamater can be
up to 6000mmPressure150#-2500#,PN2.5-PN400,5K-40KStandardGOST
12820-80,ANSI B16.5,EN1092, BS4504, JIS B2220-2012, DIN, AMSE
B16.5,UNI etc.Wall ThicknessSCH5S, SCH10S, SCH10,
SCH40S,SCH20,SCH30,SCH40, SCH60, SCH80, SCH160MaterialStainless
steel: A182F304/304L, A182 F316/316L, A182F321, A182F310S,
A182F347H, A182F316Ti, 317/317L, 904L, 1.4301, 1.4307,
1.4401, 1.4571,1.4541, 254Mo and etc.Carbon steel: A105, A350LF2,
S235Jr, S275Jr, St37, St45.8, A42CP, A48CP, E24 , A515 Gr60, A515
Gr 70 etc.Duplex stainless steel: UNS31803, SAF2205, UNS32205,
UNS31500, UNS32750 , UNS32760, 1.4462,1.4410,1.4501 and
etc.Pipeline steel: A694 F42, A694F52, A694 F60, A694 F65, A694
F70, A694 F80 etc.Nickel alloy: inconel600, inconel625, inconel690,
incoloy800, incoloy 825, incoloy 800H,C22, C-276, Monel400, Alloy20
etc.Cr-Mo alloy: A182F11, A182F5, A182F22, A182F91, A182F9,
16mo3,15Crmo, etc.ApplicationPetrochemical industy;pharmaceutical
industry;gas exhaust;power plant;ship buliding;water
treament,etc.Advantagesready stock,faster delivery time;available
in all sizes,customized;high qualityDetailed
PhotosCertificationsCompany profile Cangzhou
Youlong Pipe Fitting Manufacturing Co., LTD was established in
January 2019.The factory is located in the Mengcun, the capital of
hardware fittings,Cangzhou city, Hebei Province .The location of
the company has convenient transportation.The registered capital of
the company is 120 million yuan. The factory covers an area of more
than 235,000 square meters. Our company has more than 70 sets of
large-scale production equipment, the workshop area is 116000
square meters,integrates production,processing and testing
in-house. The company is mainly engaged in the processing and
manufacturing of pipe fittings, pipe and pipe fittings
anti-corrosion insulation, operates pipe fittings, pipes, flanges,
steel pipes and other products. The factory has passed ISO 9001
quality system certification and has various qualifications such as
special pipe fitting production license.Our products sell well in
Russia, Spain, Canada, Germany, France and other more than 100
countries and regions. Since its establishment, the company has
always focused on the production of high quality products. In order
to ensure the quality of raw materials and products, we have set up
our own quality inspection and R&D team with 32 engineers of
all kinds.And we have our own laboratory and a complete quality
control system.This also makes our products in power generation,
petroleum, chemical, natural gas, shipbuilding, heating, paper,
metallurgy and other industries are very popular, won the praise of
customers at home and abroad. Our company will continue to take
"advanced management and innovative concept" as the enterprise
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