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Pretech metal Cleaning
Establishment

We Pretech metal Cleaning Est, established in 1998, an ISO 9001-2015 certified company take this opportunity to introduce ourselves as an established house in Blasting and Painting, Fire Proofing, Refractory Lining & Pickling Passivation.

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Stainless Steels Cleaning

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Stainless Steels Cleaning

Pickling and Passivation :

Pickling and Passivation are chemical treatments applied to the surface of stainless steel to remove contaminants and assist the formation of a continuous chromium-oxide, passive film.

Pickling is the removal of any high temperature scale and any adjacent low chromium layer of metal from the surface of stainless steel by chemical means.

Passivation is the treatment of the surface of stainless steels, often with acid solutions (or pastes), to remove contaminants and promote the formation of the passive film on a freshly created surface (e.g. through grinding, machining or mechanical damage).

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