The weld neck flange is normally referred to as the "high hub" flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. The welding neck flange is the best designed butt-welded flange of those currently available because of its inherent structural value. It is expensive because of the design.
Welding Neck Flange, Available in ANSI, BS, JIS, UNI, MSS and SP Standards
Materials: A105, LF2, F304, F304L, F316, F316L, and Q235
Type: welding neck, slip-on, threaded, lap-joint, socket welding, and blind
Manufacturing standards: API, ANSI, BS, JIS, UNI, MSS, and SP
Pressure: ANSI class 150 to 2,500
Size range: 1/2 to 56 inches (DN15 to DN1,400mm)mail: hardwarexportatgmail.com
Welding Neck Flange, Available in ANSI, BS, JIS, UNI, MSS and SP Standards