Hot galvanizing is a commonly used outdoor anti-corrosion galvanizing technology. The thickness of zinc layer can reach 65um. Hot galvanized cable tray can resist outdoor wind, rain and sunlight without rusting. Its span is 1.5m to 6m. If outdoor columns are used for fixing, the general spacing is 6m. The safety load of hot galvanized cable tray is related to the span, material and height of the tray. Next, we will introduce the processing technology of hot galvanized cable tray:
1. Long service life, high degree of industrialization and stable quality. Therefore, it is widely used in outdoor environment with severe atmospheric corrosion and difficult maintenance.
2. The process is different. The hot-dip galvanized cable tray is made of cold rolled steel. After rust removal, it is immersed in 600 high temperature zinc solution to make the tray surface adhere to zinc layer. The thickness of 5mm thin plate shall not be less than 65m, and the thickness of 5mm and above shall not be less than 86m, which is equivalent to pasting a protective film on the whole bridge, so its hot-dip galvanizing has excellent corrosion resistance. For corrosive sites such as chemical plants and coastal areas, the maintenance amount and cost are reduced.
3. Hot galvanized sheet cable tray is made of hot galvanized sheet (the zinc layer is only 25m), and there is no anti-corrosion treatment in the later stage. Compared with hot-dip galvanized cable tray, ladder type cable tray has beautiful appearance, but no anti-corrosion treatment is carried out. Therefore, it cannot be used outdoors, in chemical plants, at seaside and other corrosive places. Not all hot-dip galvanizing is hot-dip galvanized sheet and cable tray, which depends on his processing technology.
4. Hot dip galvanized cable tray is protected by zinc layer, but it does not rust because zinc is not easy to change in dry air, but a dense alkaline zinc carbonate film can be formed on the surface in humid air, which can protect the interior from corrosion. Moreover, when the grooved cable tray damaged the coating and exposed a small steel base for some reason, the zinc and steel base formed a miniature battery, making the steel base a cathode and protected. Therefore, the cable tray with a zinc layer thickness of 65um will not rust or be damaged after 30 years of use. The service life of the cable tray is greatly extended.
The above is a detailed introduction to Jinan cable tray, and I hope it will be helpful to you. If you have any questions, please contact us. We will provide you with our attitude http://www.sdhangfeng.com