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Weld Neck Flanges Manufacturers in India

ASME/ANSI B16.5 Weld Neck (Wn) Pipe Flanges Manufacturer In India

Manufacturer/Exporter Of High Quality Weld Neck Forged Flanges

Carbon, Alloy, Stainless Steel Weld Neck Flanges


This steel weld neck flanges is circumferentially welded into the system at its neck which means that the integrity of the butt welded area can be easily examined by radiography. The bores of both pipe and flange match, which reduces turbulence and erosion inside the pipeline. The weld neck is therefore favoured in critical applications.

Pipefit Solution Pvt Ltd. is a specialised manufacturer of high quality ASME/ANSI/DIN standard weld neck flanges in India. We offer immediate delivery programs for standard size of carbon steel weld neck flanges and stainless steel weld neck flanges.

These type of flanges are applied when pipes are welded to the necks of pipe flanges so that they become fastened as one. Weld neck flanges have tapered necks, which are usually long in length and are thus preferred in high stress applications. They are welded with pipes so that stress is transferred from the welded neck to the actual pipe itself, and they typically come in the following faces:

  • Raised face weld neck flanges– This is the most common face for weld neck flanges due to the fact that their gasket surface is elevated above the bolting circle face. They are easy to disassemble, and can be done so without springing the flange.
  • Flat face weld neck flanges– This type of gasket has a gasket surface in the same plane as the bolting circle face. The gasket on a flat face may be ring type or full face. Applications that use flat face flanges are usually those in which the flanged fitting or mating flange is made from a casting.
  • RTJ face weld neck flanges- Also known as “API Joints,” RTF face weld neck flanges have a gasket that sits on the flat section of a flange between the ring joint groove and the bore. They seal when tightened bolts squeeze the gasket between the flanges. An RTJ face may have a raised face with a ring groove built into it.

Stainless Steel

ASTM A 182, A 240


F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L, Duplex stainless steel UNS S31803, 2205, Super Duplex stainless steel UNS S32750

Carbon Steel

ASTM A 105, ASTM A 181

Alloy Steel

ASTM A 182, GR F1, F11, F22, F5, F9, F91

Nickel Alloys

Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276

Copper Alloys

Copper, Brass & Gunmetal Size 1/8" NB TO 48"NB.


150#, 300#,400 #,600#,900#, 1500# & 2500 #.


ANSI ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48


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

Welding Neck Flange, WN Forged Flanges, Weld Neck Flanges Production Range


Stainless Steel Weld Neck (WN) Flange


Alloy Steel, Carbon Steel Weld Neck (WN) Flange


1-Weld Neck Flange | 2-Butt Weld | 3-Pipe or Fitting

What makes weld neck flanges different from these other flanges is that they are designed to be joined to a piping system by butt-welding, which is when welding of two almost parallel parts are welded together. Weld neck flanges also sport a long neck, which is why they are preferred in high-pressured applications

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