： +8618979570760 ：xuran1603@gmail.com WhatsApp：+8619170756831
English
 |
| Quantity: | |
|---|---|
WN Flange
SDFL
304 Stainless Steel WNRF Weld Neck Flange is the most widely used forged pipe flange in industrial fluid systems. Manufactured per ASME B16.5 Class150 low-pressure standard, this raised-face weld neck flange adopts one-piece closed-die forging structure. The tapered hub gradually transitions pipe stress, greatly improving fatigue resistance under pressure fluctuation, vibration and temperature cycling. Made of genuine ASTM A182 F304 stainless steel forging billet, no plate cutting, no splicing. CNC full finish machining and acid passivation ensure flat, smooth and anti-rust sealing surface. Full penetration butt weld design allows radiographic testing, fully compliant with international engineering inspection standards. Ideal for normal temperature, mild corrosion and continuous industrial piping service.
Solid forging structure with dense metallurgy, no hidden cracks
Taper stress-relief hub for superior vibration & fatigue resistance
Standard RF face compatible with most industrial gaskets
Stable anti-rust performance of 304 austenitic steel
Full penetration weld for RT non-destructive testing
Full size in stock for fast shipment
Strict ASME tolerance for global interchangeability
Passivated finish for excellent surface protection
Application EN
Industrial circulating water, clean gas pipeline, municipal engineering piping, low-pressure chemical lines, food industry piping, HVAC industrial systems, equipment permanent connections.
Why Choose Us EN
Direct factory forging, 100% solid forged blanks without plate cutting. Every batch passes PMI material testing, full dimensional inspection and flatness check. ISO9001 certified factory, providing MTR 3.1 certificates and NDT reports. Stable bulk supply for global engineering and export projects.
Customization EN
Custom OD, ID, thickness; RF/FF/MFM face conversion; laser marking; reinforced thick body; special polishing & passivation; third-party inspection support.
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：What is the advantage of WN flange over slip-on flange?
—WN flange features stress relief hub, testable full weld, higher pressure & temperature resistance for critical pipelines.
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.
