Flange design calculation
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In GB150, for arbitrary flanges, the calculations are carried out using the formulas in Table 7-5, the table for integral flanges. What values should be assigned to δ0 and δ1? How should h0 be set?
I usually refer to the values of the equipment flanges
The so-called arbitrary flange you mentioned is a flat welding flange; there is no δ1, δ1=0, and δ0 represents the effective thickness of the cylinder. When a flat welding flange is treated as a integral flange, full penetration across the entire cross-section is required – this point must be taken into account.