advantage:
The connection is not easy to deform, the sealing effect is good, and it is widely used. It is suitable for pipes with large fluctuations in temperature or pressure or pipes with high temperature, high pressure and low temperature, and also for pipes conveying expensive media, flammable and explosive media and toxic gases.
Disadvantages:
The neck butt welding flange is bulky, heavy, expensive and difficult to install and locate, so it is easier to bump during transportation.
Butt welding flange is also called high neck flange. It is different from flat welding flange in that there is a long and inclined high neck from the welding point of flange and pipe to the flange plate. The wall thickness of this section of high neck gradually transits to the thickness of pipe wall along the height direction, which improves the discontinuity of stress and thus increases the strength of flange.
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