In recent years, NDT has become one of the most important and widely used technologies in modern quality management system. The application of nondestructive testing technology in China has promoted the development of nondestructive testing equipment industry and has great market potential. Nondestructive testing instrument refers to a testing instrument that does not damage or affect the performance or use of materials or workpieces in the future. This kind of instrument can find the material or workpiece internal and surface defects, can measure the geometric characteristics and size of the workpiece, can determine the internal composition, structure, physical properties and state of the material or workpiece, so it plays an important role in many fields. In order to promote the long-term development of China's nondestructive testing industry, China is also constantly improving and revising related industry standards.

In 2013, for the sampling type inspection instrument for nondestructive testing of basic requirements, the industrial X-ray digital imaging device for nondestructive testing of performance testing rules, the nondestructive testing instrument for industrial electronic endoscopic detector, such as many standards drafting and revision, promote our country modern NDT technology forward steadily. At the same time, the function and performance index of the existing domestic nondestructive testing equipment has a large space to improve and expand compared with the foreign advanced instruments of the same kind, and the related domestic enterprises need to continue to increase the research and development and innovation. At present, with the development and progress of technology, the types of nondestructive testing instruments are increasing, including ultrasonic flaw detector, magnetic partic