What type of weld is this?
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Help: As shown in the figure, it is a square pipe joint made up of 4 plates joined together; under internal pressure, what type of weld is this longitudinal joint?
It seems fine according to Category C, but in reality it can’t be applied rigidly; there’s no need to classify it. The fillet weld is not fully penetrated.
Okay, thank you. None of the standards seem to be suitable; I’m not sure which category of welds should be applied for non-destructive testing purposes.
Under internal pressure, it seems unreasonable to design the fillet weld in this way; it would be better to create a 45-degree bevel at one end to obtain a fully penetrated weld
If it doesn’t reach one kilogram, there’s no need to waste money on non-destructive testing; if testing is necessary, use level II radiation testing, or magnetic particle or penetrant testing at level I.
Excluding categories A and B, it belongs to category C