The hot-dip galvanised layer, made up of three layers of iron-zinc alloy and a layer of zinc, offers excellent protection against steel corrosion.
A paint system (liquid or powder) also protects the steel from corrosion. This is why the combined use of both systems offer such prolonged protection.
Prior to applying a powder or liquid paint system on the hot-dip galvanised steel, the layer of zinc must be made suitable for receiving a coating. By this we mean mechanical or chemical pre-treatment on the zinc’s surface, with a view to eliminating any extra thickness, drops and other imperfections that could create a fault in the paint system. Several finishing levels can be determined according to our customers’ specifications.