Pickling is called the entire process on metal surfaces that aims to remove oxidation and inorganic impurities, such as lamination and annealing scalings, oxidation layers (such as rust), foundry crusts and surface incrustations.
Different types of processes can be carried out as pickling, mainly the following:
| Treatment Description | Treatment Code | Classification | Layer |
| ALUMINUM STRIPPING | DECA-AL | TYPE 1 | 0 |
| IRON AND ALLOY STRIPPING | DECA-FE | TYPE IV | 0 |
| STAINLESS STRAPPING | DECA-IN | TYPE V | 0 |
