Yueyang hot-dip galvanized square tube_thin-walled cold-dip galvanized square tube_galvanized square tube price

材质：

q235

&Yueyang hot-dip galvanized square tube_thin-walled cold-dip galvanized square tube_galvanized strip square tube price, Song style r b< c= Song style> Hunan Gerunde Pipe Industry Co., Ltd.
Song style r b< c= Song style>, Square tubes, rectangular tubes, square and rectangular tubes, galvanized square tubes, galvanized rectangular tubes, and galvanized square and rectangular tubes are sold directly from stock in Hunan, with complete varieties, high quality, and reasonable prices. Inquiry and ordering phone number
Songti rb/WeChat ID: .:.
c=.> Song Dynasty r b< c= Song Dynasty> Galvanized square tube is a kind of hot-rolled or cold-rolled galvanized strip steel or galvanized coil plate as the blank, which is formed by cold bending and then high-frequency Welded hollow square cross-section steel pipes with square cross-section shapes and sizes or galvanized square rectangular pipes made by hot-dip galvanizing pre-made cold-formed hollow steel pipes.
Song Dynasty r
c=.> Song Dynasty r b< c= Song Dynasty> Galvanized square pipes are divided into hot-dip galvanized square pipes and cold-dip galvanized square pipes in terms of production technology. It is precisely because of the differences between these two galvanized square tubes that they have many different physical and chemical properties. Generally speaking, they have many differences in strength, toughness and mechanical properties.
r
c=.> r b< c=> Hot-dip galvanized square tube: It is a square tube made by welding steel plate or steel strip after curling and forming, and in this way On the basis of the steel pipe, the square pipe is placed in a hot-dip galvanizing pool and formed after a series of chemical reactions. The production process of hot-dip galvanized square tubes is relatively simple, the production efficiency is very high, and there are many varieties and specifications. This kind of square tubes requires very little equipment and funds, and is suitable for the production of small galvanized square tube manufacturers. However, in terms of strength, the strength of this steel pipe is far lower than that of seamless square pipes.
r
c=.> r b< c=> Cold-dip galvanized square tube: The cold-dip galvanized square tube uses the principle of cold galvanizing on the square tube used to make the square tube Has anti-corrosion properties. Different from hot-dip galvanizing, cold-dip galvanizing coating mainly uses electrochemical principles for anti-corrosion. Therefore, it is necessary to ensure full contact between zinc powder and steel to generate an electrode potential difference, so surface treatment of steel is very important.
Song Dynasty r
c=.> Song Dynasty r b< c= Song Dynasty> The difference between hot and cold galvanizing: Galvanized square pipes are divided into two categories: hot-dip galvanized square pipes and electro-galvanized square pipes. Hot-dip galvanized square pipes include wet method, dry method, lead-zinc method, redox method, etc. The main difference between different hot-dip galvanizing methods is the method used to activate the surface of the pipe body to improve the galvanizing quality after acid leaching cleaning of the steel pipe. Dry method and redox method are mainly used in current production, and their characteristics are shown in the table. The surface of the electro-galvanized zinc layer is very smooth and dense, with a uniform structure, good mechanical properties and corrosion resistance. The zinc consumption is %~% lower than that of hot-dip galvanizing. Electro-galvanizing is technically complex, but this method must be used for single-sided coatings, double-sided coatings with different coating thicknesses on the inner and outer surfaces, and thin-walled pipe galvanizing.
r
c=.> r b< c=>Use of galvanized square tube: Since the galvanized square tube is galvanized on the square tube, it makes the galvanized square tube Its application scope has been greatly expanded compared with square tube. It is mainly used in curtain walls, construction, machinery manufacturing, steel construction projects, shipbuilding, solar power generation brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, etc.
Song Dynasty r
c=.> Song Dynasty r b< c= Song Dynasty> Galvanizing has stronger protective effect and strong corrosion resistance. The entire structure is made of zinc, forming a dense quaternary crystal. This crystal forms a barrier on the steel plate, thus effectively preventing corrosion factors from penetrating. < c=> The corrosion resistance comes from the strong protective function of the zinc barrier layer. When zinc provides sacrificial protection on trimmed edges, scratches, and scratched parts of the coating, the zinc forms an insoluble oxide layer and plays a barrier protective function.
Song style r
c=.> Song style r b< c= Song style> Calculation of the theoretical weight per meter of galvanized square tube: * (side length and thickness) *.*.*Thickness
Song style r
c=.> r b< c=> Among them, the side length and wall thickness are in millimeters. Directly substitute the values into the above formula to get the weight of the square tube per meter, in kilograms. . For example, for a .mm square tube, its weight per meter can be calculated according to the above formula: (.) .=.gram, that is, about .kg. When the wall thickness and side length are both in millimeters, the wall thickness (side length wall thickness) is calculated as the volume of the square tube per meter length in cubic centimeters, multiplied by the specific gravity of iron in grams per cubic centimeter, The result is the weight in kilograms per meter of square tube.
r
c=r>< c=> Yueyang hot-dip galvanized square tube_thin-walled cold-dip galvanized square tube_galvanized square tube price, .>< c=>Welcome Come to the website of Hunan Gerunde Pipe Industry Co., Ltd., contact mobile phone/WeChat: wealth.
Song Dynasty.>
Square tube