Welding of branch pipe bases
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The standard for the openings in the main pipe: should they be larger or smaller than those in the branch pipe fittings? And is it suitable for butt welding or socket welding?
The openings are the same size as the holes at the lower part of the branch pipe base. . . It is of the sitting type. . . It’s not plug welding. .
The opening diameter is the same as the inner diameter of the branch pipe fitting, similar to butt welding.