Weld Neck Flanges
VEFLOX precision-forges premium Weld Neck Flanges distinguished by their long, tapered hub. Designed for severe service applications involving high pressure, sub-zero, or elevated temperatures, the tapered hub gradually transfers stress from the flange base to the pipe wall, ensuring unparalleled structural integrity in the most hostile industrial environments.
Detailed Technical Specifications
Long Weld Neck (LWN): Extended hub used primarily for vessel nozzles and heavy plant equipment.
DIN/EN: PN6, PN10, PN16, PN25, PN40, PN64, PN100
Stainless Steel: ASTM A182 F304/304L, F316/316L, F321, F347
Alloy & Duplex: ASTM A182 F11, F22, F51, F53, Inconel, Monel
Core Advantages
Superior Stress Distribution
The defining tapered hub acts as a structural reinforcement, safely transferring extreme line stress from the flange base directly into the pipe wall, preventing fatigue cracks.
Radiographic Weldability
Because it connects to the pipe with a single full-penetration V-weld, the joint can be easily and flawlessly inspected using radiography (X-ray), a strict requirement in critical pipelines.
Zero Flow Disruption
The internal bore of the flange is machined to perfectly match the internal diameter of the connecting pipe. This eliminates step-downs, preventing turbulence, erosion, and pressure drops.