Tinplate (commonly known as tinplate) refers to the surface of the steel plate coated with a thin layer of metal tin. Tinplate is the low carbon steel rolled into about 2mm thick steel plate, after pickling, cold rolling,electrolytic cleaning annealing, leveling, edge cutting processing, and then after cleaning, electroplating, softening, passivation treatment, oiling after cutting into tinplate plate finished products, tinplate used for high purity tin (Sn>99.8%). Tin layer can also be coated by hot dip plating method, the tin plate obtained by this method is thicker, with a large amount of tin, tin plating without purification treatment.