"GB/T 19816.1-2005 Test methods for metal abrasives for jet cleaning of steel surfaces prepared before coating, Part 1: Sampling" specifies the sampling method for metal abrasives for jet cleaning. The standard equivalent adopts ISO 11125-1:1993, which is suitable for collecting metal abrasives for jet cleaning from materials, and provides sample subdivision guidance for subsequent test methods. Its main content includes the definition of sampling units, the selection of sampling tools, and the sampling steps, which provide the basis for ensuring the quality control of metal abrasives for jet cleaning. The standard is proposed by the Chinese shipbuilding industry group company, the national Coating and pigment standardization technical committee, issued on June 10, 2005, and implemented on November 1, 2005.