Alloy Welding Neck Flange For High Pressure Applications Wn Flange Class 150 Class 2500 Flange

Alloy Welding Neck Flanges for High-Pressure Applications – Class 150 to Class 2500 – SSM

SSM manufactures high-quality alloy welding neck (WN) flanges, engineered for high-pressure and high-temperature piping systems. Available in Class 150 to Class 2500, these flanges ensure durable, reliable, and leak-proof connections in demanding industrial applications.

What is an Alloy Welding Neck Flange?

An alloy welding neck flange is a tapered hub flange welded directly to the pipe, designed to:

Distribute stress evenly along the hub and pipe

Withstand extreme pressure and temperature

Provide reliable sealing in critical pipelines

These flanges are widely used in oil & gas, petrochemical, power generation, and chemical industries.

Material and Specifications

Materials: Alloy Steel (Inconel, Hastelloy, Monel, Duplex)

Standards: ASME B16.5, ASME B16.47, EN1092-1, DIN

Size Range: NPS ½" – 48" (DN15 – DN1200)

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

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

Applications

SSM's alloy welding neck flanges are widely used in:

Oil & gas pipelines and refineries

Petrochemical and chemical plants

Power generation and boiler systems

Offshore and marine pipelines

High-pressure and high-temperature industrial pipelines

Why Choose SSM?

Over 30 years of experience in alloy flange manufacturing

Advanced forging, CNC machining, and quality inspection for precision and durability

ISO, PED, and TS certified for quality assurance

Custom sizes, pressure classes, and surface finishes available

Fast global delivery and competitive pricing

Conclusion

For alloy welding neck flanges for high-pressure applications (Class 150–Class 2500), SSM provides durable, corrosion-resistant, and high-performance flange solutions suitable for demanding industrial piping systems.

📩 Contact SSM today for quotations, technical drawings, or custom flange solutions.

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