This process known as DUPLEX system (GALVANIZING + PAINTING), in our case powder painting, provides a greater protection than that obtained from the sum of both treatments separately.
The paint alone is insufficient, because the rust will have lifted all the paint in a short time, generating a feeling of poor quality.



COMERCIAL PROVA has developed a process of Electrogalvanized suitable for painting with guarantee on it, according to the UNE standards of galvanized and powder painting.
The zinP process has been created for a high durability of the finish, and normally our customers use it for outdoor applications. We mainly use polyester paint, for its good performance, not excluding the application of epoxy paints, and even processes with liquid paints if required by the customer.

Choose Zin P from Comercial Prova and you will achieve:

Greater resistance to corrosion than hot-dip galvanizing or painting on iron.
Savings in handling, transport and delivery time costs, thanks to the same applicator.
A single responsible for the quality of the finish.
Very competitive price for both processes.

We have carried out painting works on other materials, such as aluminum and steel, for the automotive sector, corporate image, construction, facades…

Chemical process with adhesion guarantees

We have developed a chemical process where we give guarantees of adherence to paint on galvanized surfaces, all our work is supported by salt spray chamber tests and demonstrable adhesion tests.
We manage to solve the problem of bad adherence that paints have on galvanized steel.
We can see that after 600 hours of CNS test, we have detachment of the paint on a hot-dip galvanized and shot-blasted surface as a pre-treatment.
With our process we ensure that at 1200 hours we do not have this detachment.


We are experts in the process of cold galvanizing with Zinc protective film on steel, high resistance white, yellow and bichromated passivated, as well as in its application for interior and exterior.