The surface treatment of steel is carried out in steel industry (integrated steelworks) by the blast furnace, rolling steel industry, and a surface treatment steel manufacturing industry.The former 2 industries perform consistently from rolling to surface treatment of steel ignot produced by steelmaking, but the latter performs the surface treatment of the steel received from another source.
It is difficult to separate the data of hot rolling from the data of blast furnace iron making and steel roling industry, the surface treatment process in a surface treatment steel manufacturing industry is covered here.
Galvanized sheet iron, zinc coated steel tubing, and other surface treatment steel are the target.