Anodizing of profiles

Anodizing is done by immersing aluminum in a bath of acid electrolyte and passing an electric current through the medium. The cathode is mounted inside the bath, the aluminum profiles act as an anode, so that oxygen ions are released from the electrolyte and combine with aluminum atoms from the surface of the profiles. The purpose of anodizing is to form a layer of alumina that will protect the aluminum beneath it. The oxide layer of aluminum is much more resistant to wear and corrosion than aluminum.

With this process it goes through 28 special baths until it reaches the desired quality. The maximum length of the profiles is 7 m.