Can the side flange be raised just like a long-neck butt-weld flange?
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As stated in the title, it is a floating-head heat exchanger; the wall thickness of the shell side cylinder is 6 mm, the diameter is 700, and 700-1.0 side flanges are used. However, the minimum butt weld wall thickness for side flanges of this specification is 8 mm, and standard GB/T29465 does not provide any methods or instructions for using enlarged flanges to butt weld thinner cylinders. However, adding spliced thick cylinders increases costs. Is there a better solution to this problem?
Treat it as a non-standard flange; as long as the calculations are correct, that’s sufficient~
Thickening the heat exchanger shell by 2 mm at this diameter doesn’t increase its weight much, yet it improves safety.
Fierce competition, and the boss is cheap: L
Designers have the right to take both safety and cost into comprehensive consideration
I suggest you take a look at item D2.1 on page 288 and items 6.5.1/3 on page 323 of GB150