The rouging of stainless steel installations is the result of the formation of iron oxide, hydroxide or carbonate from external sources or related to the destruction of the passive layer of stainless steel. The colour variation depends on the type of oxide formed and the variation in water associated with the corrosion process. The colours vary from orange to black.

In purified water systems, the rouge can be classified into three types:

  • Type I: related to contamination from external sources, usually the erosion of pump parts, for example
  • Type II: induced by the presence of chloride on the surface of the stainless steel
  • Type III: the colour changes to black here and is present in high temperature steam facilities.

Chimiderouil, through its experience in the stainless steel sector and the continuous development of new product formulations can help to solve the problems of rouging you encounter in your installations.

A highly experienced team will offer you a diagnosis and solutions tailored to your needs.

Below are some cases of rouging treated by Chimiderouil teams on site or in our workshops in Nimy