GB/T 2650 - 2022 formulates specifications for impact testing of metal material welds. It clarifies the test principle, specifies the shape, size and preparation method of the sample, specifies the requirements of equipment such as Impact Tester, specifies the test process, including test temperature control, Impact operation, etc., and also provides the method of evaluating the results. The standard provides a unified method for the field of metal material welding, helps to accurately evaluate the performance of the weld under Impact load, ensures the safety and Reliability of the welded structure, and promotes the improvement of the welding mass in the industry.