Why cannot magnetic particle testing be performed on the ring welds of nozzles with a DN of less than 80?
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Seeking advice. . . Thank you. Should PT penetrant testing be used in this case?
It’s possible to do it, but ordinary factories don’t have such equipment or manufacturing processes; therefore, it is generally converted into PT, which is easier to operate
Magnetic particle inspection requires a magnetic guide handle; if the diameter of the pipe is too small, the magnetic guidance effect is poor and the defect detection rate is low, so PT is a better choice.
I agree with the person above; generally, we use infiltration for DN values less than or equal to 50.