Weld Neck Flange
RFWN Flange (Raise Face Weldneck 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 of RFWN Flange 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.
RFWN Flange is 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. Weldneck flange is welded to a pipe or fitting with a single full penetration, V weld (Buttweld).
Trupply offers RFWN Flange in A105, A105N, SS316, SS304, High Yield, A20 & Nickel Alloys. Email firstname.lastname@example.org for your flange buying needs.
The video below gives and overview of Weld Neck Flange