After the pickling treatment, the steel is able to self-restore the protective film of chromium oxide, but this “self-passivation” process takes a long time and requires particular conditions. “Passivation” is a process that allows accelerating the formation of this protective layer with the aid of specific preparations. We normally operate by immersion in tanks or, alternatively, by spraying. After the treatment, we can check its effectiveness by means of our passivation test, which also detect any contamination.

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