Hot DEGREASING let the surfaces get an effective pickling action by removing oils and greases tailings.
The third phase is PICKLING through the hydrochloric acid by which rust and calamine caused by working processes like rolling, drawing etc.. are removed.
WASHING is carried out with water in order to eliminate the residues of hydrochloric acid.
FLUXING with Salts of zinc and ammonium prevents oxidation and improves the iron-zinc reaction.
PREHEATING is a specially provided furnace meant to dry the material and to reduce the thermal difference between the ambient and the molten zinc.
GALVANIZING is a metallurgical process that consists in dipping the steelwork into a special bath of molten zinc at the temperature of 440-450° thus forming an iron-zinc alloy on the surface which ends with the creation of an outer layer of zinc.