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Weld Neck Flange

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Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting.

The long tapered hub provides an important reinforcement for use in several applications involving high pressure, sub-zero and / or elevated temperatures. The smooth transition from flange thickness to pipe or fitting wall thickness effected by the taper is extremely beneficial, under conditions of repeated bending, caused by line expansion or other variable forces.

These flanges are bored to match the inside diameter of the mating pipe or fitting so there will be no restriction of product flow. This prevents turbulence at the joint and reduces erosion. They also provide excellent stress distribution through the tapered hub and are easily radiographed for flaw detection.

This flange type will be welded to a pipe or fitting with a single full penetration, V weld (Buttweld).

Weld Neck Flange
A weld neck flange is a type of flange that is designed to be welded to a pipe or fitting. It has a long tapered neck that is welded to the pipe, providing strength and stability to the joint. The weld neck flange also has a raised face, which helps to create a seal when the flange is bolted to another flange or fitting. This type of flange is commonly used in high-pressure and high-temperature applications, as the welded connection provides a strong and reliable joint.
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