Pickling and passivation of products made of inox, aluminum, steel, metal, copper and brass

Whether it concerns pickling and passivation of inox, aluminum, steel, metal, copper and brass, you are at the right address.

With years of experience with pickling and passivation on site  and with several pickling lines in the Netherland, we know what comes to professional surface treatment of your product. Beside the shape, dimensions and the most suitable application, we also strictly monitor our pickling procedures which concern environment, safety and acid remain treatments. This is how the corrosion resistance which increases the durability of your product. Whether it concerns (spray or brush) pickling at your site or pickling by immersion in one of our professional pickling shops, Multinal Group has the possibilities, you have the choice.

Features of pickling:

  • Removes a layer of metal
  • Affects the oxide layer
  • Removes mill- and walding scale
  • Removes corrosion products

Pictures of a part before the pickling process and after the pickling treatment conducted by Multinal Group.

You can see the before and after picture by clicking the white arrow in the middle of the picture, and drag it to the right (keep your left mouse button pushed down).

Kind of metal, size and applicable method of pickling

When you have to pickle metal the kind of metal, the shape, size and applicable method are very important. Obvious a difficult to move object has to be pickled on site, in contrast to an easy movable object which can be pickled in our factory. Also safety, environment and our expertise are very important issues.

A clean and pure surface

Regardless which treatment you choose, the pickling treatment is aimed to remove the oxides which were formed during warmth treatments or production. You can think about mill scale, welding scale, discolorations and removal of rust. By cleaning the object thoroughly with demineralised water we obtain a clear and pure surface.

Passivation: optimum resistance against corrosion

When there is a high degree of pollution and/ or high quality requirements we advise you to pickle and passivate separately. It is an important process to passivate after a pickle treatment, because the corrosion resistance will be optimal. You can execute a passivate treatment or you can accelerate this process with chemical passivation. We apply chemical passivation frequently as we like to obtain short delivery times and to guarantee the required quality.