Welding Neck Flanges

The is normally referred to as the high hub . It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the .

The welding neck flange is the best designed butt-welded flange of those currently available becuase of its inherent structural value. It is expensive because of the design.

Standards, Dimensions & Weight of Welding Neck
Specifications of Welding Neck Flanges:

Size: 1/2” to 60”, DN 12mm to DN 1500mm
Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250
Facing: RF / RTJ

Material of Welding Neck Flanges:

Cabon steel: A105, A350 LF2, C22.8, S355JR
Stainless steel: A182 F304/F304L/F316/F316L/F321
Alloy steel: F11, F12
Packing: plywood case and plywood pallet