GB/T 8438-1998 specifies the test standard for the colour fastness of Spinning & weaving products to steam pleating. The standard specifies the test equipment, such as the parameter requirements of the steam pleating device, and details the test steps, including the pretreatment of Spinning & weaving products, the duration and temperature of the steam pleating treatment, and the method of evaluating the results. By testing according to this standard, the color retention degree of Spinning & weaving products after steam pleating processing can be accurately judged, which provides a key basis for Spinning & weaving enterprises in the quality control of the pleating process of clothing and other products, ensuring that the colour fastness of the product pleating parts meets the requirements and improves the product quality.