The color of the surface of the steel grating after galvanizing is usually silvery white. Because zinc is silvery white, of course some will be painted and turned blue, etc. The purpose of galvanizing is to make the surface of the steel grating smooth and prevent rust.
The rusting of steel gratings after undergoing the galvanization process could be attributed to the materials which were utilized during its production. If iron was utilized, it is possible that the principle of absorbing anode was applied in order to safeguard the cathode in anti-corrosion.
Some steel gratings need to be passivated after galvanizing in order to improve the anti-corrosion ability after galvanizing. When the steel grating is just galvanized, the color is yellow or light yellow, and then through a nitric acid film removal process (acid-base neutralization), it will become silver white (the color of zinc), and the passivation process is after the film removal. , After the passivation process, it is possible to produce different colors such as blue-white, multicolored, black, yellow, etc. (specific colors are made according to customer requirements). The degree of authenticity of galvanized steel grating is mainly determined by the film thickness of galvanizing. Generally, the film thickness of hot-dip galvanized steel grating is required to reach more than 70чm, while ordinary cold-galvanized steel grating can reach 10чm. All right.
When it comes to pricing steel grating, the quality of the galvanizing process plays a significant role. Generally, a thicker layer of galvanizing will result in a higher price, but the increase is usually not much and the manufacturer calculates their cost accordingly. Ultimately, the thickness of the galvanized layer directly correlates with the final cost of the steel grating.
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