how to weld a socket weld flange
The socket flange is abbreviated as (SW flange). The basic shape of the socket flange is the same as the flat welding flange with a neck. That is, a socket is opened in the inner hole of the flange. Weld a circle of welding seam on the back of the flange, because there is a gap between the socket flange and steel pipe, it is easy to cause corrosion. If you weld a seam inside, you can avoid this corrosion. Socket flanges welded on the inner and outer sides have a fatigue strength 5% greater than flat welded flanges and the same static strength. When using this socket flange, its inner diameter must be the same as the inner diameter of the pipe. The socket flange is only suitable for pipes with a nominal diameter of 150 or less.
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