High Quality Galvanized Square Pipe

The production process of hot-dip galvanized square pipe is relatively simple, the production efficiency is very high, and there are many varieties and specifications. This kind of square pipe requires little equipment and funds, which is suitable for the production of small galvanized square pipe manufacturers. The cold galvanized square pipe is used on the square pipe to make the square pipe have anti-corrosion performance by using the principle of cold galvanization. Different from hot-dip galvanizing, cold galvanizing coating mainly carries out anti-corrosion through electrochemical principle. Therefore, it is necessary to ensure full contact between zinc powder and steel, resulting in electrode potential difference, so steel surface treatment is very important. Galvanized square tubes include hot-dip galvanized square tubes and electro galvanized square tubes. Hot dip galvanized square tubes include wet method, dry method, lead-zinc method, oxidation-reduction method, etc. The main difference between different hot-dip galvanizing methods is what method is used to activate the pipe surface and improve the galvanizing quality after acid leaching cleaning of steel pipe. At present, dry process and redox process are mainly used in production. The surface of the zinc layer is very smooth, dense and uniform; Good mechanical properties and corrosion resistance; The zinc consumption is 60% ~ 75% lower than that of hot dip galvanizing. Electro galvanizing has certain technical complexity, but this method must be used for single-sided coating, double-sided coating with different thickness of internal and external surface coating, and thin-wall pipe galvanizing.