In what situations cannot ultrasonic testing be performed?

Situations where ultrasonic testing cannot be performed include, but are not limited to, the following: 1. The material to be tested is unsuitable for ultrasonic wave propagation; for example, it may be too thin, too small, or have an uneven surface. In such cases, other flaw detection methods can be considered. 2. The flaw detection equipment or operators do not meet the requirements, resulting in the inability to properly detect defects. 3. The temperature of the target material being too high or too low affects the flaw detection results. Whether ultrasonic testing cannot be performed when the pipe wall thickness is below a certain value needs to be determined based on specific circumstances. There is no uniform standard specifying the minimum pipe wall thickness. If you need to perform flaw detection in this area, it is recommended that you consult industry experts or refer to industry standards and manuals. The proportion and requirements for flaw detection may vary in different codes and standards. For specific materials and requirements, it is necessary to select appropriate codes and standards based on the actual circumstances for flaw detection. It is recommended that you consult authoritative authorities or experts in the relevant industry, and follow the pertinent regulations and standards when carrying out operations. .