Weld Neck Flanges Suppliers and Manufacturers

Welding Neck flange SIZE DIAMETER 15mm NB to 1200mm NB as per ANSI B 16.5 Pressure rating form 150 Lbs to 2500 Lbs Size Larger Than 600NB AS PER API 605 or M.S.SP 44 up to 1200mm NB GRADE AVAILABLE. Carbon Steel ASTM A105 A105N A694 F42 46 52 56 60 65 70 A350 LF3 A350 LF2, etc. Alloy Steel ASTM A182 F1 F5 F9 F11 F22 F91 etc.

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.

A long weld neck flange LWN flange is a type of flange that has a long tapered neck that extends from the flange face to the pipe This longer neck provides more support to the pipe at the weld joint making it a more robust and reliable connection LWN flanges are typically used in highpressure and hightemperature applications such as in the oil and gas industry Technical Specifications Dimensions 12 to 24 in diameter The neck length is typically 15 to 2 times the flange diameter Materials Carbon Steel Stainless Steel or Alloy Steel Pressure ratings 150 psi to 2500 psi Temperature ratings 200F to 1000F Types RFFFRTJ LWN flanges are used in a variety of applications including Oil and gas industry Chemical industry Power generation Water treatment HVAC The benefits of using LWN flanges include Increased strength and reliability Longer service life Wider range of applications Easier to assemble and disassemble

A weld neck flange is a type of flange that is joined to a piping system by butt welding. The flange consists of a circular fitting with a protruding rim around the circumference. The rim has a series of drilled holes that permit the flange to be affixed to another flange with bolts. The flange also has a long tapered hub that gradually meets the wall thickness of the pipe or fitting. Technical Specifications: Materials: Carbon steel, stainless steel, duplex steel, alloy steel, etc. Dimensions: 1/2" to 24" Class range: Class 150 to 2500 (ANSI/ASME B16.5) Type: RF,FF,RJT PN range: PN 2.5 to PN 250 Hub length: Short hub (SH), Long hub (LH), Extra long hub (XH) Finish: Black, mill finish, painted, etc. Advantages of Weld Neck Flanges: Increased strength and durability Reduced stress concentration Smooth transition from flange thickness to pipe or fitting wall thickness Easy to radiograph for flaw detection Can be used in high pressure and high temperature applications Applications: Power plants Chemical plants Oil and gas industries Water treatment plants HVAC systems Other industrial applications

Welding Neck (WN) FlangeThe Welding Neck (WN) Flange is a flange designed to be welded to a pipe. The flange has a long tapered hub that is welded to the pipe to form a strong, leak-free connection. The flange also has a flat circular plate with bolt holes to secure the flange to another flange or piece of equipment. Description A Welding Neck (WN) Flange is a type of flange used in piping systems to connect pipes and equipment together. It is designed to be welded to the pipe or fitting and then bolted to another flange or piece of equipment. The WN flange has a long tapered neck that is welded to the pipe or fitting, and a flat face that extends out from the neck. The flat face of the flange provides a surface for the gasket to seal against, and the bolts are tightened to compress the gasket and create a leak-tight seal. The neck of the WN flange also provides reinforcement to the connection, which makes it suitable for use in high-pressure and high-temperature applications. The tapered design of the neck reduces stress concentrations and distributes the load evenly across the flange, which helps to prevent leaks and failures.

Code No. JSI -68