Multinal Group has the right expertise to effectively stain and passivate stainless steel such as:
sheet metal, tubes, piping, piping, mounting parts, gratings, frames, tubes, heat exchangers, flanges and housings.
With several pickling plants in the Netherlands, we know exactly what is involved in the correct and professional treatment of your product. In addition to the shape, the size and the best applicable technology, we of course closely monitor our pickling procedures with regard to the environment, safety and acid residue treatment. This way you can be sure that the corrosion resistance and thus the durability of your product is enhanced.
Options for pickling and passivation
Pickling and passivation of stainless steel, aluminum and carbon steel according to ASTM A380 standards;
Support and set up a specific pickling procedure for your customer;
Pickling treatment is also possible according to your customer’s standard;
Pickling in immersion baths or spray pickling in our pickling plants
Pickling at your location in the Netherlands or at an international location.
Why pickling and passivating stainless steel?
A chromium oxide layer is created naturally on the surface of the stainless steel, which gives the material its protection.
This chromium oxide layer is damaged by the various mechanical operations such as: sawing, cutting, setting, milling and welding.
Due to these operations there is a risk of “iron inclusion” taking place. As a result, stainless steel can eventually rust.
About the treatment
By pickling processed stainless steel in a solution of, for example, nitric acid with hydrogen fluoride, carbides, iron particles