Whatis the thickness standard of galvanized sheet?
Characteristic1: Galvanized sheet is a steel sheet with a layer of zinc coated onthe surface after the surface of the steel sheet has been treated bythe galvanizing process. Zinc is relatively active, and it willquickly react with the oxygen in the air to form a layer of basiczinc carbonate film at room temperature. This film will prevent thezinc from continuing to react with the air, thus protecting the zinclayer from air erosion, and also ensuring that the steel under thezinc layer will not be corroded by the air, which will cause spotsand rust.
Characteristic2: The galvanized sheet surface feels smooth and looks pleasant tothe eye. The galvanized sheet is divided into patterned galvanizedsheet and non patterned galvanized sheet. The patterned galvanizedsheet is very bright when viewed from the outside, and is generallyused for household appliances, kitchenware, etc. The surface of thenon patterned galvanized sheet is not as bright as the patternedgalvanized sheet. The color is dark, and similar to the cold-rolledsheet. It is generally used as the protective circuit of thesupporting lines of mechanical equipment.
Whatare the corresponding standards for the thickness and weight of zinccoating on galvanized sheet?
Thethickness range of zinc coating on galvanized sheet is very wide. Thethickness of the thinnest zinc coating is only 5um, and the thicknessof the thickest zinc coating can reach 100um. The weight of 1square meter zinc coating is 100g, the corresponding thickness ofzinc coating is 14um, the weight of 1 square meter zinc coating is200g, the corresponding thickness of zinc coating is 28um, the weightof 1 square meter zinc coating is 400g, and the correspondingthickness of zinc coating is 56um. It can be seen that the greaterthe weight of zinc coating, the thicker the zinc coating. Thereare 2000, 2003, 2013 and 2017 standards for the thickness of zinccoating. These standards require the thickness of zinc platedgalvanized sheet to be at least 12 microns, and the thickness ofhot-dip galvanized sheet to be at least 65 microns. Whenpurchasing galvanized sheet, the thickness standard requirements ofthe project for the galvanized layer will be referred to.