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Hotdip galvanization is a form of galvanization . It is the process of coating iron and steel with zinc, which alloys with the surface of the base metal when immersing the metal in a bath of molten zinc at a temperature of around 449 °C (840 °F). When exposed to the atmosphere, the pure zinc (Zn);China Galvanized Steel Grilles manufacturersSelect 2020 high quality Galvanized Steel Grilles products in best price fromName: Steel Floor Decking. Surface Treatment: Hot Dipped Galvanized . Place of Origin: Wuxi,China.Galvanized Steel Floor Grilles for Platform Walkway Floor, Fences.;Alibaba.com offers 2,170 hot dip galvanizing steel grates grilles products.A wide variety of hot dip galvanizing steel grates grilles options are available to you, such as specification, feature, and barbecue carbon type.;The press welded galvanized steel grating/ grille /grate is made of load flat steel bar and cross bar, placed horizontally and vertically, and at an equal pitch apart, by welding with 200 ton hydraulic resistance automatic welding equipment, then cutting, punching and banding ends.