Stainless Steel Welding Neck Flange 

-Best-known flange

- For high pressure & temperature application in process piping 

Welding Neck Flange (WN Flange)‌
Precision Engineered for High-Pressure and High-Temperature Applications

‌Product Overview‌
The Welding Neck Flange (WN Flange) is a premium-grade pipe flange designed for critical applications requiring exceptional strength, durability, and leak-free performance. Featuring a tapered hub and a smooth transition to the adjoining pipe, this flange type is ideal for high-pressure, high-temperature, and high-stress environments. Its robust construction ensures long-term reliability in industrial and commercial piping systems.

‌Key Features‌

• ‌Superior Structural Integrity‌: The long tapered hub distributes stress evenly, minimizing risk of distortion under extreme conditions.

• ‌Leak-Resistant Design‌: A butt-weld connection to the pipe creates a seamless, robust joint, eliminating weak points.

• ‌High-Pressure Performance‌: Suitable for ASME Class 150 to Class 2500 ratings, ensuring compatibility with demanding systems.

• ‌Broad Material Compatibility‌: Available in carbon steel (ASTM A105), stainless steel (ASTM A182 F304/F316), alloy steel, and other specialized materials.

• ‌Temperature Versatility‌: Performs reliably in temperatures ranging from -20°F to 1,400°F (-29°C to 760°C).

• ‌Standards Compliance‌: Manufactured to ASME B16.5, B16.47, ANSI, MSS SP-44, and API standards.

‌Applications‌

• Oil & gas pipelines and refineries

• Chemical and petrochemical processing plants

• Power generation systems (steam, thermal, nuclear)

• Water treatment and high-pressure HVAC systems

• Shipbuilding and offshore platforms

‌Technical Specifications‌

• ‌Sizes‌: 1/2" to 60" (DN15 to DN1500)

• ‌Pressure Classes‌: 150, 300, 600, 900, 1500, 2500

• ‌Face Types‌: Raised face (RF), Ring-Type Joint (RTJ), Flat Face (FF)

• ‌Surface Finish‌: Anti-corrosion coatings, hot-dip galvanizing, or machined finishes available.

‌Installation & Maintenance‌

• Welding neck design ensures easy alignment and secure installation.

• Compatible with standard gaskets and bolts for seamless integration.

• Regular inspection recommended to maintain flange integrity and prevent corrosion.

‌Why Choose Our WN Flanges?‌

• ‌Certified Quality‌: ISO 9001:2015 compliant with full traceability.

• ‌Custom Solutions‌: Tailored dimensions, materials, and coatings to meet project-specific needs.

• ‌Global Supply‌: Rapid delivery supported by our international logistics network.