宝运莱国际

Ningbo Xinchi Welding and Cutting Equipment Co., Ltd.

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1718 North Zhangxin Road



What should I pay attention to when welding flanges and pipes?

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What should I pay attention to when welding flanges and pipes?

来源: http://tzhangli.com点击: Release date: 2017-05-02 00 : 00Source : http : //tzhangli.comClick :

When welding flanges and pipes:

① The contact surface of the flange should be flat and smooth. A ring-shaped shallow groove can be allowed, but there must be no scars, trachoma and radiation to the groove, and the two flange surfaces should contact uniformly and closely.

② The centerline of the flange plane should be perpendicular to the centerline of the pipe, and its deviation should not be greater than 1-2.5mm.

③ The allowable position of flange screw hole distance (linear measurement) is 0.5-1.0mm.

④The allowable error between the centerline of the flange eyelet and the centerline of the pipe is 1-2mm.

⑤ The allowable deviation of the two flange planes is 0.2--0.3mm.

⑥ When welding flanges and pipes, pay attention to welding stress and deformation (especially stainless steel).
It is necessary to ensure the verticality of the flange and the pipeline, and to avoid the deviation of the parallelism of the flanges when the two pieces of flanges are bolted, which will cause the gasket clamps to leak tightly.


    管道自动焊 , 管道坡口机 , 管法兰焊接 专业公司, Ningbo Xinchi Welding and Cutting Equipment Co., Ltd. is a professional company for automatic pipe welding , pipe beveling , and pipe flange welding . There is nothing wrong with him!

Related tags: pipe automatic welding , pipe beveling machine , pipe flange welding

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