Welding Neck Flange (WN flange) is circumferentially welded into the system at its neck which means that the integrity of the butt welded area can be easily examined by radiography. The bores of both pipe and flange match, which reduces turbulence and erosion inside the pipeline. The weld neck is therefore favored in critical applications.

Standards: ANSI B16.5: 150LB, 300LB, 600LB

          DIN: 2631 PN6, 2632 PN10, 2633 PN16, 2634 PN25, 2635 PN40

          UNI: 2280 PN6, 2281 PN10, 2282 PN16, 2283 PN25, 2284 PN40

Materials: Carbon steel, stainless steel and alloy steel.