GB/T 7987-2013 specifies the test method for the resistance of glass-lined layers to temperature difference and sudden denaturation. The standard clearly describes the test equipment, such as heating and chilling down devices, details the sample preparation, test operation procedures, including the test of glass-lined layers under specific temperature change rate and temperature difference conditions, and also clarifies the method of evaluating the results. With the help of this standard, the ability of Glass-lined layers to cope with rapid temperature changes can be accurately evaluated, providing a reliable test basis for the production and Application of Glass-lined equipment, and ensuring the safe use of equipment under sudden temperature conditions.