Calculation of flange strength for direct welding of non-standard equipment flanges and heads
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For non-standard equipment flanges that are welded directly to the head, without an intermediate cylinder, how should the \"cylinder thickness\" value be entered in the strength calculation for SW6 equipment flanges? Enter the head straight edge thickness directly?
For butt welding with a neck, it’s done like this. The height of the straight edges shall comply with HG/T20583.
Based on the thickness of the straight edges. It can be assumed that there is a section of cylinder, and you still need to fill in the length. Little impact
You can directly specify the thickness of the straight edge, or calculate it using the \"flanged male head\" option in the components
There are no butt-welded types among the flanged convex end caps
Then treat the straight edge of the head as part of the cylinder
For the specific calculation details, refer to Section 7 \"Flanges\" in GB/T150.3-2011, and consult the relevant calculation regulations for that specific type of flange based on its category； For necked butt-weld flanges, note that the length of the flange butt joint should be no less than the parameter ho.