In addition to iron, stainless steel alloys contain chromium, nickel, molybdenum, and other constituents. In combination with oxygen, chromium in particular forms a stable, chromium-oxide-rich layer that protects the system from rouge. This so-called passive layer can be strengthened by chemical passivation. To minimise the susceptibility of rouge from the start, new systems should therefore be professionally passivated after installation.
Efficient passivation in three steps
Our method for passivating stainless steel systems is a three-stage process that includes a pH-neutral pre-cleaning followed by passivation treatment and a final rinse. Throughout this process, the equipment is treated in a controlled recirculation system with chemicals that do not attack stainless steel pipes. Our specialised chemicals optimise the chromium-to-iron ratio of the surface, creating a more robust passive layer that significantly contributes to reducing susceptibility to corrosion.