What exactly does the wall thickness of a elbow refer to? Very confused.
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DN25 SCH40, R=1.5D, 90o elbow; SCH40 thickness = 3.38 millimeters. Is this 3.38 mm thickness the thinnest part of the outer curve? Wall thickness at the thickest part of the inward bend? Or the wall thickness of the welded pipe?
It is of course the wall thickness at the thinnest part of the outer curve, but there is usually a range of variation. You can take a look at the standards.
The thickness you provided here should be the thickness of the straight tube; this thickness is calculated as the design thickness plus corrosion allowance plus manufacturing negative deviation plus any machining reduction (if any), and then rounded up to the standard thickness； **According to the standards (GB 50316), the minimum thickness at the thinnest part of the outer curve is the calculated thickness plus the corrosion allowance
The thickness at the thinnest point. The positive and negative differences need to be considered. If you’re being too picky. Today’s companies generally only have negative profits
The thickness of the diameter ensures that the elbow and pipeline are connected properly to avoid misalignment. The deviation at the bending point shall be implemented in accordance with the specifications.
This is the nominal thickness. . . Nominal thickness. . . .