Application of galvanized steel coil Galvanized steel coil can be divided into general use, roof use, building outer side plate use, structural use,tensile use and deep drawing use. Main process flow of galvanized coil The galvanizing production line is a complete set of equipment for hot-dip galvanizing a layer of zinc alloy coating on both sides of steel coils. The production line is composed of uncoiler, welding machine, storage machine, degreasing cleaning unit, continuous annealing furnace, zinc pot, air knife, finishing machine, tension straightener, oiler, shear, coiler and other equipment.