Steel billets can be coated or painted through several methods. One common technique is hot-dip galvanizing, where the billets are immersed in a bath of molten zinc. This process forms a protective zinc coating on the surface of the steel, preventing corrosion. Another method is electroplating, which involves the deposition of a thin layer of metal, such as zinc or nickel, onto the billets using an electric current. Additionally, steel billets can be painted using various coating systems, such as powder coating or liquid paint, to provide a decorative finish or additional protection against rust and environmental factors.
