Galvanized corrugated steel sheet, also known as galvanized sheet or white iron sheet, is a cold-rolled continuous hot-dip galvanized steel sheet and strip with a thickness of 0.25-2.5mm. The surface of the steel plate is beautiful, with block or leaf like zinc crystal pattern, the zinc coating is firm, and has excellent atmospheric corrosion resistance. At the same time, the steel plate has good welding performance and cold forming performance. Compared with the electro galvanized steel sheet, the galvanized layer of the hot-dip galvanized steel sheet is thicker, and it is mainly used for parts requiring strong corrosion resistance. Galvanized sheet is widely used in construction, packaging, railway vehicles, agricultural machinery manufacturing and daily necessities.