Non destructive testing has been widely applied in industry, especially online non-destructive testing has been recognized by enterprises. Therefore, researching and developing online non-destructive testing equipment using various non-destructive testing technologies is one of the research projects. In industrial production, not only is the working environment relatively good, but the environment is also slightly worse, accompanied by high temperatures, dust, and water mist. Therefore, different detection equipment should be developed for different industrial scenarios in order to perform real-time detection effectively.

Industrial CT, also known as computed tomography or industrial CT imaging, is a non-destructive testing equipment manufacturer. Although the mathematical theory of tomography was first proposed in 1917, it was not until the emergence of computers and their complementarity with radiology that tomography became a new imaging technology. In the industrial field, especially in the fields of non-destructive testing (NDT) and non-destructive evaluation (NDE), industrial CT is considered a good non-destructive testing method in the field of non-destructive testing.

Since the 1980s, major industrialized countries in the world have applied X-ray or gamma ray ICT to non-destructive testing in fields such as aviation, aviation, military, metallurgy, machinery, petroleum, electricity, geology, archaeology, etc. In the 1990s, China gradually applied ICT technology to the field of industrial non-destructive testing. Online non-destructive testing can be applied in industrial production to improve the measurement accuracy of rolling objects, perform real-time detection, adjust production equipment in a timely manner, ensure the production of more high-quality rolling materials, effectively improve the production efficiency and qualification rate of enterprises, and bring economic benefits to enterprises at the same time.

The commonly used non-destructive testing methods for X-ray inspection include optical testing, laser testing, image testing, eddy current testing (ECT), radiographic testing (RT), ultrasonic testing (UT), magnetic particle testing (MT), and liquid penetrant testing (PT). Other non-destructive testing methods: AE, TIR, LT, ACFMT, MFL, RFT, TOFD, etc. This article mainly introduces several non-destructive testing methods such as optical testing, laser testing, and image testing.

Non destructive testing is the use of changes in heat, sound, light, and reactions caused by abnormal or defective internal structures of materials, such as electricity, magnetism, through physical or chemical methods, with the help of modern technology and equipment, without damaging or affecting the performance of the test object, and without damaging the internal structure of the test object. It examines the surface and internal structure, properties, inspection and testing methods of the sample, as well as the types, properties, quantities, shapes, positions, sizes, distributions, and changes of defects.

Non destructive testing (NDT) is an indispensable and effective tool for industrial development. Non destructive testing equipment manufacturers reflect a country's level of industrial development. The importance of NDT has been recognized.