ASME B16.5 WNRF 4 SCH40 SS316 Flange
Product Description – ASME B16.5 WNRF 4" SCH40 Flange, Stainless Steel 316
SSM manufactures and supplies ASME B16.5 Weld Neck Raised Face (WNRF) Flanges made from stainless steel 316, a molybdenum-bearing austenitic stainless steel offering excellent corrosion resistance, especially against chlorides and acidic environments.
The Weld Neck Flange (WN Flange) features a long tapered hub that provides superior reinforcement and stress distribution, making it ideal for high-pressure and high-temperature applications. The 4-inch SCH40 specification indicates compatibility with standard wall thickness pipes, ensuring precise fit-up and reliable sealing performance.
All flanges are forged, heat-treated, and precision-machined according to ASME B16.5 standards, ensuring durability, dimensional accuracy, and leak-free operation in demanding service conditions.
Technical Specifications
| Item | Description |
|---|---|
| Standard | ASME B16.5 |
| Type | Weld Neck Raised Face (WNRF) |
| Nominal Size | 4" (DN100) |
| Pipe Schedule | SCH40 |
| Material | Stainless Steel 316 / ASTM A182 F316 |
| Pressure Class | Class 150, 300, 600, 900, 1500 |
| Facing Type | Raised Face (RF) / Ring Type Joint (RTJ) |
| Manufacturing Process | Forged and Machined |
| Surface Finish | Serrated Finish (125–250 AARH) |
| Testing & Certification | EN 10204 3.1 / 3.2 Certificates Available |
Applications
Oil & Gas and Petrochemical Pipelines
Power Generation and Heat Exchanger Systems
Marine and Offshore Installations
Water Treatment and Desalination Plants
Food Processing and Pharmaceutical Equipment
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