Product Features▹

Welding Neck Flanges (RFWN Flange) are easy to recognize. They include a long tapered hub that gradually meets the wall thickness from the 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. In conditions of repeated bending, caused by line expansion or other variable forces, the smooth transition from flange thickness to pipe or fitting wall thickness is extremely beneficial.  

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).


Material Information▹

A105 - The standard forged carbon steel piping components for ambient and high temperature / pressure systems

SS304 - A common standard for stainless steel due to its malleability, high corrosive resistance weld-ability  

SS316 - A molybdenum stainless steel that provides excellent tensile, creep and stress-rupture strengths at elevated temperatures

Material Description for Flanges                               


Size and Dimensions▹

Import Weld Neck Flanges

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Weld Neck Flange | A105 | Profile
Weld Neck Flange
A105
SCH: 160
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From $ 24.64
Weld Neck Flange | A105 | Profile
Weld Neck Flange
A105
SCH: STD
Flat Face
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From $ 16.23
Weld Neck Flange | A105 | Profile
Weld Neck Flange
A105
SCH: STD
Raised Face
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From $ 16.23
Weld Neck Flange | A105 | Profile
Weld Neck Flange
A105
SCH: XH
Raised Face
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From $ 16.23
Weld Neck Flange | A105 | Profile
Weld Neck Flange
A105
SCH: XXH
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From $ 24.64
Weld Neck Flange | SS304 | Profile
Weld Neck Flange
Stainless Steel 304
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From $ 21.60
Weld Neck Flange | SS316 | Profile
Weld Neck Flange
Stainless Steel 316
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From $ 32.64
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