Galvanized square tube with hot galvanized square tubes and galvanized square tube into two categories. Galvanized square tubes have wet, dry, lead, zinc, oxidation-reduction method. The main difference between the different methods of hot-dip galvanized steel pickling after cleaning, the method used to improve the activation of galvanized pipe surface quality. Production is now mainly used dry and redox method. Galvanized zinc coating surface is very smooth and dense, uniform organization; has good mechanical properties and corrosion resistance; zinc consumption 60% to 75% lower than the hot-dip galvanizing. Galvanized technically have some complexity, but for single-sided coating, coating thickness and external surfaces of different double-sided coating, as well as thin-walled tube galvanized mused must use this method.

       Therefore galvanized square tube is made of galvanized steel in the process, it makes the range of applications than galvanized square tube square tube has been greatly expanded. It is mainly used for walls, buildings, machinery manufacturing, iron and steel projects, shipbuilding, solar bracket, steel engineering, electrical engineering, power plants, agricultural and chemical machinery, glass walls, car chassis, airports and so on.