(1) surface state: The surface state of galvanized sheet is different because of the different treatment methods in the coating and plating process, such as ordinary zinc flower, fine zinc flower, flat zinc flower, zinc free flower and phosphating surface. The German standard also provides for surface grades.
(2)Galvanized steel plate is coated with a layer of metal on the surface of the steel plate to prevent corrosion and prolong its service life
(3)It is divided into two kinds of galvanized sheet and galvanized sheet packing. General iron sheet packing, lined with moisture-proof paper, with iron kidneys strapped on the bracket. The binding should be firm to prevent the inner galvanized sheets from rubbing against each other.