Technical differences between the hot galvanized and cold galvanized Rectangular Pipe Rectangular Pipe galvanized corrosion resistance is much higher than cold galvanized (also known as electro-galvanized). HDG will not rust in a few years, cold galvanized rust in six months! Cold galvanizing process used to protect metals against corrosion, for use of the zinc coating filler, using any method of coating applied to its surface to be protected, forming a zinc coating filler After drying, the dried coating having a content of zinc (95%). Steel under cooling conditions in non-standard galvanized surface side pass, and galvanized steel pipe in the hot dip galvanizing conditions on the surface, its strong adhesion, not easy to fall off, although there have galvanized pipe corrosion phenomenon, but in a very long period to meet the technical and sanitary requirements for the pipe to be reasonable stacking, advanced first place (1) stacking principle requires under palletizing solid, if safe, so press varieties, specifications palletizing, different varieties of materials to be separately stacking, to prevent confusion and mutual corrosion; (2) prohibits the storage of steel pipe pile position near the corrosive effect of the article; and (3) shall be padded bottom pile, sturdy, flat to prevent moisture or deformed material; (4) has the same material respectively by stacking storage, easy to implement the principles of advanced pre-emptive; (5) open dumps steel, the following must be wood or stone mat, a little pile surface inclined to facilitate drainage, and note that the material placed flat to prevent the causing bending deformation; (6) the stack height does not exceed 1.2m manual work, mechanical work no more than 1.5m, pile width not exceeding 2.5m; ( 7) should be left between the stacks and stacks a certain channel, check road is generally O. 5m, of access depending on the size of the material and transport machinery, generally 1.5 to 2. Om; (8) the end of booster stack, if the warehouse Chaoyang cement floor, elevate O. 1m can; if it is mud, must elevate O. 2 ~ 0.5m. If it is open space, concrete floor booster O · 3 ~ O · 5m, mud face booster 0.5 ~ O. 7m 9) open dumps angles and channels should stoop to put non-standard square pass 22 * ??35, the mouth down, I-beam shall be immediately put non-standard square pass 24 * 24, I can not be up and groove pipe, so the plot water rust. RHS storage warehouse to keep clean, reinforcing material conservation (1) material before storage to guard against rain or impurities are non-standard square pass 25 * 35, which has been exposed to rain or soiled materials to be adopted by its nature different methods to wipe, such as high hardness available wire brush, low hardness with a cloth, cotton and other things; (2) the material after storage should always check if rust, corrosion layer should be removed; (3) general steel surface After clearing the net, do not oiled, but the high-quality steel, alloy steel sheet, thin-walled pipe, steel pipe, etc., required after blasting its inner and outer surfaces coated with anti-rust oil before storage; (4) more severe corrosion steel, not rust after long-term storage, it should be used as soon as possible. Non-standard square through 25 * 35 square tube factory in Tianjin non-standard (certification), non-standard way through 1000-by Tianjin Pipe Company Limited. 1000-Tianjin Steel Pipe Co. (www.tjqre.com) (www.tjqre.com) is Tianjin, steel leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In the 1000-pipe leadership with the staff warmly welcome all inquiries negotiations to create the 1000-pipe a better future.