304 Stainless Steel Weld Neck Flange Forged Butt Weld Flange for General Industrial Piping

Integral die forging structure, dense internal metallographic organization, no porosity or hidden cracks

Tapered hub design disperses pipeline stress, anti-fatigue performance superior to SO flange

Standard RF raised sealing face, perfect matching with spiral wound & non-metallic gaskets

ASTM A182 F304 genuine stainless steel, outstanding atmospheric rust resistance

Full penetration butt weld connection, available for radiographic non-destructive testing

Full size range NPS 1/2”–NPS24, sufficient stock for fast delivery

Strictly follow ASME B16.5 dimensional tolerance, fully interchangeable with international standard fittings

Available Materials: F304, F304L, F316, F316L

Application Scenarios: Factory circulating water pipeline, general gas delivery piping, municipal industrial fluid system, food factory non-corrosive medium pipeline, equipment main process permanent connection, low-pressure fire protection industrial piping

Why Choose Us

We are professional manufacturer of forged stainless steel weld neck flanges with more than 12 years production experience. All Class150 304 WN flanges adopt solid forging instead of plate cutting, eliminating hidden danger of layered crack. Every batch implements PMI spectrum inspection, full dimension inspection and sealing flatness test. Our factory holds ISO9001 certification and can issue official EN10204 3.1 MTR material test certificate. We support small trial orders and large-scale continuous supply for global EPC contractors, providing complete flange matching solutions.

Customization Capabilities

1.Non-standard bore thickness, overall diameter and customized hub length

2.Convert sealing face: RF / FF / MFM according to customer technical drawing

3.Enhanced passivation, mechanical polishing surface treatment option

4.Laser engraving LOGO, standard mark, heat number and project code

5.Extra thickened flange body for higher safety coefficient

6.Export fumigation wooden case packaging, separate batch labeling

7.Pre-shipment third-party dimensional & material inspection arrangement

FAQ:

1:How long is the custom lead time for stainless steel flanges in Wenzhou?

— 8 to 10 working days

2:What is the fastest delivery time?

— 3 working days

3:Do you support non-standard custom flanges?

— Yes, we do.

4:Can you process special sizes?

— Yes. Max processing size: 4000 mm, Min processing size: 30 mm.

5:Do you have stainless steel flanges of standard sizes in stock?

— Yes.

6:Can we customize flanges based on customer drawings or samples?

— Yes.

7:Will material test certificates and inspection reports be provided for the purchased flanges?

— Yes, they will.

8:Is there a quality warranty for the flange products?

— Yes.

9:How to handle quality defects if they occur?

— Product return and exchange available.