Usually the process of chromium plating is done by immersing the steel bar in a bath of chromium. This way is called Traditional Method.

The traditional method of chromium, usually horizontal, is done in open tanks producing a high saturation of vapours and splashes, which involve many problems in the workplace for health and safety, because of using hexavalent chromium needed for hard-chrome, moreover the effects on the environment.

The length of the bar is limited by the size of the tanks, which is usually up to 6 meters long.

The amount of electrical current flowing through the bar varies in it is length, which creates a chromed deposition with non-uniform thickness along the total area.
 
With this method it is impossible to ensure a uniform thickness of chromium, as there is to deposit an excessive amount of chromium and subsequently should be eliminated through an aggressive grinding, accentuating the problem of uniformity and concentricity.

The chrome bath suffers from a progressive process of aging caused mainly by a concentration of iron ions. The steady increase in concentration decreases the performance until the bath becomes useless.

All these and many other problems are solved with the method of continuous chromium plating.