This standard specifies two test methods for the abrasion resistance of natural stone: the grinding disc abrasion method is suitable for testing materials such as rough stone and square pavement stone, with the abrasion resistance calculated based on the mass loss of the sample after grinding on the disc; the grinding wheel abrasion method is suitable for testing products such as composite panels and crystallized panels, with the abrasion resistance evaluated based on the depth of the grinding groove formed by the grinding wheel on the sample surface. This test is of significant importance for evaluating the durability of stone in high-traffic areas such as floors and steps, directly impacting the product's service life and safety. The core equipment used in actual testing is the stone abrasion testing machine. Method A employs a disc-type abrasion testing machine, which must meet key technical parameters such as disc hardness of 203 HB to 245 HB, rotational speed of 45 r/min, and sample load of 2000 g, and be equipped with a balance with an accuracy of 0.01 g and a forced-air drying oven at 65°C ± 5°C. Method B uses a wide-wheel abrasion machine, equipped with an abrasive flow control device and a rotation measurement system. Modern models also feature automatic counting and uniform abrasive supply functions to ensure the accuracy and repeatability of test results.