Why are the inspection ratios and grade requirements different for end caps formed first followed by the flat plates, as compared to those where the flat plates are formed first and then the end caps?
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Experts, why are the inspection ratios and quality standards different for end caps that are first formed and then joined together, as compared to those that are first joined together and then formed? What’s the reason?
It should be noted that what is being inspected are the welds; the panels are first assembled and then shaped, and the welds are also subject to deformation, so 100% flaw detection is necessary. After molding and then assembly, only the base material deforms; the weld is not affected, and normal inspection ratios can be applied.