JT/T 1266-2019 桥梁钢结构冷喷锌防腐技术条件

JT/T 1266-2019 Friction stir welding is a welding method in which a rotating tool is applied to the workpiece surface to create a solid weld. The weld joint is usually smooth and without porosity, which ensures the mechanical properties and corrosion resistance of the welded structure. This method is commonly used in the construction industry for joining steel plates, especially in bridges and other large-scale steel structures. The technology specification for cold zinc coating of steel structure bridge refers to the standard of cold zinc coating for steel structures, and provides the technic