The flange wall thickness is slightly greater than that of the pipe wall; special attention must be paid to this during welding
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For flanges with neck welding, the wall thickness should be about 10 mm thicker than that of the pipes used. .
10 mm in thickness is too large; edge misalignment is likely to occur. Perhaps there’s a lack of consistency between Series I and Series II? If so, it’s best to change it to a unified format.
Thin the wall thickness to match that of the tube, and then perform TIG root welding.
Was this sent to the wrong place? Agree with what was said above; it’s best to reduce the wall thickness.
Is it the outer diameter that is thick, or the inner diameter? . If the inner diameter and thickness are high, it is recommended to use a pressure rating that is lower; it’s also cheaper
If the outer diameter is the same, it will be lower; if the inner edge is made thinner, it can be made lower as well.
The outer thickness must be broken using waves, followed by welding with TIG welding. The inner slope is also treated as an outer slope, with welding being performed in areas where the site pressure is low.