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How To Distinguish Hot Galvanized Steel Grid From Cold Galvanized Steel Grid

The surface of hot-dip galvanized steel grating is treated by special hot-dip galvanizing, its chemical and physical properties are stable, and it is not easy to be corroded and oxidized by air and microorganism, which can significantly enhance the load force of trench and prevent collapse. The hot-dip galvanized steel grating with flat steel spacing of 3cm has a large impact resistance, with a large span. Because of its strong impact resistance, the hot-dip galvanized steel grating has a strong impact resistance With its corrosion-resistant heavy load capacity and elegant appearance, it has superior performance in municipal subgrade and steel platform construction engineering and high cost performance, which makes the hot-dip galvanized steel grid widely used in the construction of new and old subgrade covered ditch road. If there is no human damage factor involved, the hot-dip galvanized steel grid is a very good steel frame structure and bearing platform.
How to distinguish hot galvanized steel grid from cold galvanized steel grid
1. Appearance color of steel grating, The color of hot-dip galvanized steel grid is brighter than that of cold-dip galvanized steel grid, which is atmospheric and silvery white, while the color of cold-dip galvanized steel grid is dim and dirty white. The cold-dip galvanized steel grid has high requirements on the surface cleanliness of the workpiece, so it also has high requirements on the technical level of the operators and poor working conditions of hot-dip galvanizing. It needs to work at high temperature, generally at 450 ℃ - 460 ℃, but this kind of The process is simpler than that of cold galvanized steel grid, and the effect of hot galvanized steel grid is better than that of cold galvanized steel grid.
2. The galvanized steel grid is thin and thick. The zinc thickness of hot-dip galvanized steel grid is about 70UM, while that of cold galvanized steel grid is only about 10um (which is why the price of hot-dip galvanizing is higher than that of cold galvanizing). The hot-dip galvanized steel grid is to melt the zinc ingot at high temperature. Add auxiliary materials and then dip the steel grid into the zinc bath to make it adhere a layer of zinc on the surface, while the cold galvanized steel grid takes a physical reaction, and the amount of zinc is less without heating, once encountering wet environment, it is very easy to fall off and produce subsequent costs.
3. The economic benefits of steel grating include complicated galvanizing process, increased investment in equipment and capital construction, high power consumption and serious pollution. While the hot-dip galvanizing process is simple, the investment in equipment and infrastructure is relatively small, and the output is large, but the "zinc consumption" of the electro galvanizing is the deposition of zinc on the surface of the workpiece, while a large amount of zinc in the hot-dip galvanizing is consumed on the surface of the zinc liquid to oxidize to form zinc ash, and because of the zinc to the zinc pot, workpiece, sling, etc At the same time, the non-uniformity of the hot-dip galvanizing layer will also increase the zinc consumption. The cost of the hot-dip galvanizing steel grid is higher than that of the cold galvanizing steel grid, so the price will be higher.