Galvanized coil is a steel plate in which the steel plate is immersed in molten zinc dross "to make the surface adhere to a layer of zinc". Galvanized coil can be divided into hot-rolled galvanized coil and cold-rolled hot-dip galvanized coil. At present, the continuous galvanizing process is mainly used in the production, that is, the rolled steel plate is continuously immersed in the zinc molten pool to make the galvanized steel plate.

Due to its strong corrosion resistance, good surface quality, favorable for deep processing, economical and practical, galvanized coils are widely used in construction, home appliances, automobiles, containers, transportation and household industries and other fields. Especially in steel structure construction, automobile manufacturing, steel warehouse manufacturing and other industries.