This standard specifies the test method for determining the wear resistance of the inner lining of rubber or plastic hoses of specific diameters under working conditions such as sandblasting and shot blasting. The core principle is to simulate the abrasion process of the hose by sand and grit during actual application, and to compare the durability of different hoses by quantitatively evaluating the wear of the inner lining. When conducting such standardized wear tests, a common device used in laboratories is the rotary abrasion tester. This type of instrument quantifies the wear of the material (such as mass loss) after a specified number of rotations or cycles by allowing one or more abrasion wheels to rub against the surface of the hose sample under set pressure and speed, providing reliable quantitative data for quality control and research and development of hoses.