Non-destructive testing methods for stainless steel thin-walled tubes with a wall thickness of 1.5 millimeters
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There is a project that involves stainless steel thin-walled tubes with a wall thickness of 1.5 millimeters. Non-destructive testing was initially planned to be carried out using radiographic testing, but the testing agency reported that the wall thickness was too thin for such testing to be feasible, suggesting that penetrant testing be used instead. However, can penetrant testing only be applied to the surface of welds? Can penetrant testing be used as a substitute for radiographic testing? Is there a standard that specifies the wall thickness range for which radiographic testing is applicable? So far, it has been found that SY/T 4109 specifies that wall thicknesses greater than 2 millimeters are covered, but NB/T 47013 does not provide such specifications.
For weld inspection, penetrant testing can only detect the presence of cracks, but not the depth of penetration. As far as I know, there is a new type of X-ray inspection technology known as cold cathode tube inspection; it is a portable X-ray detector capable of detecting walls with thicknesses ranging from 0 to 40 mm. You can get in touch later if necessary