GB/T 7322-2017 specifies the test method for the refractory refractory. The standard specifies the equipment required for the test, such as high temperature furnaces, temperature measurement devices, etc. The preparation process of refractory samples is standardized, and it is clear that under a specific heating rate, the thermal deformation of the sample is observed to determine its refractory degree. This method provides a unified standard for accurately evaluating the ability of refractory materials to maintain shape and structure stability in high temperature environments, helping manufacturers control product mass, meet the needs of various industries for the use of high temperature materials, and ensure the safe operation of high temperature industrial facilities.