welding neck flange use more material than other flanges due to it's long neck

　　Specification: NPS1/2"-NPS60"

　　Norminal Pressure: Class150~Class2500

　　Material:A105,20#,Q235,16Mn, 304,304L,316,316L ect.

　　Standard: ANSI B16.5,ANSI B16.47,MSS SP 44,DIN2632,DIN2633,DIN2634,DIN2635,DIN2636,DIN2637,

　　EN1092-1 ect.

　　Weld-Neck flanges or welding-neck flanges can be differentiated from all other types of flange by their long neck. The weld neck flange is so named because its neck part of the flange is welded to the end of a piping system. Weld neck flange is designed to transfer stress to the pipe in the purpose of reducing high stress concentrations at the base of the flange. Normally Weld neck flange is expensive because welding neck flange use more material than other flanges due to it's long neck.

　　Hebei shengtian pipe-fitting group Co., ltd is specialized in manufacturing and exporting steel flanges and carbon steel pipe fitting. In additation to the standard products mentioned above, we are also able to make non-standard, special-designed items according to customers’ requirement. Should any of the items be of your interests, please do not hesitate to contact us for latest information.