Description:- Weld Neck flanges
Range: - 15 NB TO 1500NB (1/2 to 60")
ANSI B 16.5 (150#, 300#, 400#, 600#, 900#, 1500# & 2500#)
Material: Stainless Steel - ASTM A-182 (304, 304L, 316, 316L
Carbon Steel - ASTM A-105, A-350 LF2, IS 2062, AS 516 Gr. 70, C45
Alloy Steel - ASTM A-182 F5, F9, F11, F12, F21, F22.
Long Weld Neck Flange
A welding neck flange (WN) features a long tapered hub that can be welded with a pipe. This flange type is used, normally, in high-pressure and high/low temperatures applications that require an unrestricted flow of the fluid conveyed by the piping system (the bore of the flange matches with the bore of the pipe). The absence of pressure drops prevents negative effects as turbulence and erosion/corrosion of the metals in the proximity of the flanged joints. The tapered hub allows a smooth distribution of the mechanical stress between the pipe and the weld neck flange and facilitates the execution of radiographic inspections to detect possible leakages and welding defects. The dimension of the flange (NPS and the pipe schedule) shall match the dimension of the connecting pipe.
Long weld neck flanges (LWN) are similar to weld neck flanges, with the exception that the neck (tapered hub) is extended and acts like a boring extension. Long weld neck flanges are generally used on vessels, columns or barrels. These flange types are available also in the heavy barrel (HB) and equal barrel (E) types
API 6A Weld Neck Flanges are pipe flanges attach by welding the pipes to the neck of the flanges. This transfers stress from the flange to the pipe instead. It also reduces the stress concentration from the base of the hub. Welding neck flanges remove stress concentration and allow full working pressure and they are often used for high pressure applications. The inside diameter of the flange is designed to match the pipe's inside diameter. Weld neck pipe flanges are typically provided with a raised face, flat face, or RTJ facing.
Stainless Steel Weld Neck Pipe Flanges Stainless Steel Welding Neck Flange Stainless Steel Welding Neck Plate Flanges SS Welding Neck Flange Stainless Steel Weld Neck Flanges ASTM A182 Stainless Steel Weld Neck Flange SS WNRTJ Flange Stainless Steel WNFF Flange
Titanium Weld Neck Flanges
Hastelloy Weld Neck Flanges
Inconel Weld Neck Flanges
Stainless Steel Weld Neck Pipe Flanges Stainless Steel Welding Neck Flange Stainless Steel Welding Neck Plate Flanges SS Welding Neck Flange Stainless Steel Weld Neck Flanges ASTM A182 Stainless Steel Weld Neck Flange SS WNRTJ Flange Stainless Steel WNFF Flange
