CORALUM is a surface protection treatment based on an electroceramic coating applied by electrolytic deposition method directly on the aluminium alloy.With the simple and effective application of the CORALUM treatment, the antioxidation characteristics of the aluminum alloy increase by 100%, confirming the equivalence, in terms of classification on corrodibility, according to the C5 - UNI EN ISO 12944:2018 standard typical of steels.

Above CORALUM is then applied the Cortem’s thermosetting powder coating based on crosslinked polyester resins RAL 7035 gray special, pigmented with stainless steel powders to give a greater resistance to impact and an orange peel finish.