Description
WELDED NECK FLANGES FACTORY
WELDED NECK FLANGES FACTORY
What is Welding Neck Flange?
Weld Neck Flange, also referred to Welding Flange with Neck, is the flange with butt weld has a shape intended to transfer the stress to the pipe, to reduce the stress at the base of the flange. It can be recognized by its collar and its smooth transition from the thickness of the flange to the thickness of the pipe wall. This transition makes it particularly resistant to the repeated stresses caused for example by line expansions or other variable forces. We can consider that this assembly is as resistant as an end-to-end tube assembly. It is preferred for severe services under conditions of high pressure, high or low temperature, and which can fluctuate between wide limits.
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Specification of WN FlangesSize: DN15-DN2000 (1/2-78 inch)
Surface Treatment: Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,Hot dipped Galvanized.
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Weld Neck Flange Pressure GradePN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, PN160, PN250, PN320, PN400
Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500
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Weld Neck Flange MaterialsCarbon Steel Flange: ASTM A105, 20#, Q235, 16Mn, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65 ,F70;
Stainless Steel Flange: ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;
Alloy Steel Flange: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/Ⅲ;
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Sealing Surface Types For Weld Neck FlangesRF (Raised Face);
FF (Flat Face);
M&F (Male-and-Female Face);
RTJ (Ring-Type Joint)
F (Female Face);
M (Male Face);
T&G (Tongue and Groove Face);
Among them, the uneven surface (MFM) is a matching use;
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Weld Neck Flange StandardsANSI, ASME, JIS, DIN, BS4504, SABS1123, EN1092-1, UNI, AS2129, GOST-12820
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WN Flange ApplicationChemical, Engineering, Construction, Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Manufacturing Industry, Pipe Projects etc.
