Stainless Steel WN Flange

QS Flange: Ningbo Stainless Steel WN Flange

Forged stainless steel weld neck flange, 1/2 to 24 inch, 300LB with raised face, built for high temperature, high pressure and high sealing requirements.

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One-Minute Overview

Weld neck flange in stainless steel, 1/2 to 24 inch, 300LB, raised face.
Forged body gives the strong stiffness a pressure joint needs.
Designed for high-temperature, high-pressure service with demanding sealing requirements.
Butt-welded through the hub for a full-strength, inspectable joint.

The stainless steel WN flange is a weld neck flange with a forged body and a raised face, offered from 1/2 to 24 inch in the 300LB class. Weld neck flanges are built for high temperature, high pressure and high sealing requirements: the hub tapers into the pipe wall, so the butt weld is easy to inspect and the joint carries bending and axial loads smoothly. Strong stiffness and good sealing make it a default choice on critical lines.

Name: Stainless Steel WN Flange
Size: 1/2"-24"
Pressure: 300LB
Material: Stainless Steel
Flange Face: RF
Standard: 待补

Pick the WN flange when the line runs hot, runs hard, or must not leak: the tapered hub and full-penetration butt weld give the joint the stiffness and leak tightness a slip on flange cannot match. Stainless steel construction covers corrosive atmospheres and media, and forged bodies keep the pressure boundary sound. Specify size and 300LB class to suit the line, match the raised face to the mating flange, and weld with a qualified procedure for the stainless grade in hand.

FAQ

Q1. Why specify a weld neck flange instead of a slip on flange?

Stiffness and sealing. The WN hub transfers stress into the pipe and the butt weld gives a full-strength joint, which matters at high temperature and high pressure. Slip on flanges are quicker to fit, but the weld neck is the choice where sealing requirements are demanding.

Q2. One flange size range from 1/2 to 24 inch — really?

Really. This series is forged from 1/2 to 24 inch in the 300LB class with a raised face, so a plant can standardize on one WN pattern across many lines. You still confirm the mating flange drilling and gasket before ordering, because one series is not a license to guess.

Q3. What should I watch when welding a stainless WN flange?

Heat input and cleanliness. Stainless welds need a qualified procedure, clean fittings and controlled interpass temperature to keep corrosion resistance. Fit the hub square, complete the butt weld per procedure, and inspect it before bolting up the raised-face joint with the right gasket.

Q4. Is there a minimum order quantity for these WN flanges?

Standard flange insulation gasket kits start at one set, and standard gaskets, studs, washers and sleeves start at one piece. Parts made to your drawing or to a non-standard bolt pattern are quoted one by one, because the minimum really depends on the material and the tooling involved.

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