Galvanized square tube GB, 1000-steel, galvanized square tube

 Redu Rectangular Pipe protective properties of electro-galvanized zinc coating thickness is usually 5 ~ 15μm, while the hot-dip galvanizing layer is generally more than 35μm, even up to 200μm. HDG coverage is good, dense coating, no organic matter mixed. As we all know galvanized square tube model, the mechanism of resistance to atmospheric corrosion of zinc electrochemical mechanical protection and protection under conditions of atmospheric corrosion of zinc layer on the surface ZnO, Zn (OH) 2 and basic zinc carbonate protective film, to a certain extent mitigate corrosion of zinc, this layer of protective film (also called white rust) will be destroyed to form a new film. When the zinc layer serious damage, endangering the iron matrix, the matrix produces zinc electrochemical protection of thin-walled galvanized pipe, zinc standard potential -0.76V thick galvanized pipe, standard potential -0.44V iron, When zinc and iron to form micro-batteries as the anode is dissolved zinc, iron as the cathode is protected. Clearly galvanized for resistance to atmospheric corrosion of the base metal is better than galvanized iron. Material Classification square tube Material: carbon steel pipe, low-alloy square tube. Carbon steel into: Q195, Q215, Q235, SS400,20 # steel, 45 # steel and other; low-alloy steel into Q345,16Mn, Q390, ST52-3 so on. Standard Classification of square tube production by producing sub-standard: GB square tube, the standard square tube, inch square tubes, American standard tube, square tube European standard, non-standard square tube. Galvanized square tube GB, 1000-steel, galvanized square tube provided by the Tianjin Steel Pipe Co., Ltd. Rong thousand. 1000-Tianjin Steel Pipe Co. (www.tjqrgg.com) is Tianjin, steel leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the 1000-pipe leading the staff warmly welcome all inquiries negotiations to create the 1000-pipe a better future.