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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