JG/T 475-2015 "Silicone structural sealant for building curtain wall" standard specifies the classification, marking, performance requirements and test methods of silicone structural sealant (silicone structural adhesive) for building curtain wall. It is suitable for building curtain wall projects designed to have a service life of not less than 25 years. The standard defines the classification of silicone structural adhesives, including single component and double component types, and is classified into aluminum, Glass and Miscellaneous metals according to the substrate. The standard makes detailed requirements on the appearance, physical and mechanical properties, compatibility, etc. of the product, and specifies relevant test methods to ensure product mass and performance. These tests cover the glue's sagging degree, surface drying time, extrusion, durability, Hardness, bubble, tensile adhesion, etc., to ensure its Stability and Reliability in long-term use.