316L Stainless Steel Welding Neck Flange DN50 PN16

316L Stainless Steel Welding Neck Flange DN50 PN16 Welding neck flange (WN flange) features tapered neck for uniform stress distribution. It is butt-welded with pipes to realize high-strength, leak-proof connection. Forged forming ensures stable mechanical performance and good corrosion resistance of 316L stainless steel. Widely used in chemical, water treatment, food, power and petrochemical pipeline engineering.

✅ Material: 316L

✅ Specification: DN50, Pressure Class PN16

✅ Type: Welding Neck (WN) Flange

✅ Sealing Face: RF Raised Face (optional FF/RTJ)

✅ Standard: EN1092-1 Type 11

✅ Connection: Butt Weld

✅ Processing: Precision forging, machined surface

✅ Supporting Documents: EN10204 3.1 Material Test Certificate

Product Features

1. Forged integrated forming, high tensile strength, resistant to pressure and temperature fluctuation
2. Tapered neck structure reduces stress concentration, excellent fatigue resistance
3. Butt weld joint allows full penetration welding, convenient weld inspection and NDT test
4. 316L stainless steel offers good anti-corrosion performance for medium and low corrosive media
5. Standard dimension, interchangeable with matching pipes, valves and fittings