The standard specifies the materials, dimensions, sealing performance, test items and requirements for domestic kitchen sewer components. On the basis of relevant foreign standards, the requirements for salt spray resistance have been increased, and requirements such as the installation size of the drainage filter, the size and accuracy of the connecting thread, the low-temperature resistance of the bellows, the thickness of the overflow pipe joint, and the resistance to acetic acid corrosion have been added; in domestic related On the basis of the standards, the requirements for the anti-aging performance of the drainage mechanism and the leakage index of the drainage filter have been increased, and the detection methods have been simplified; and according to the national food safety mandatory standards, metal parts and non-metallic parts in direct contact with drinking water and food are Metal parts are required. Part of the content of this standard fills the gaps in similar standards at home and abroad, and will play a leading role in the industry and reach the international advanced level.