WN Flange

Weld Neck flanges feature an extended tapered hub that provides smooth stress transition from flange to pipe, significantly improving fatigue resistance and high-pressure performance. With a bore matching the pipe diameter, they ensure minimal flow disruption and are widely used in oil & gas, refining, pressure vessels, boilers, and long-distance transmission lines.
WN flanges solve challenges such as stress concentration, sealing reliability under vibration, and durability for large-diameter or critical pipelines.

Our Weld Neck flanges use precision-machined weld bevels and high-strength materials. Produced to GOST, ANSI, or EN standards, they offer excellent dimensional accuracy and reliability in low-temperature, corrosive, and heavy-load applications.