Hot-dip galvanization – the cheapest and best method to achieve corrosion protection of steel
As steel is a nobler metal than zinc, cathodic – or sacrificial – protection is an option. During the hot-dip process, a reaction occurs between the two metals, forming an alloy, and thus a very strong bond between the zinc and the steel.
Hot-dipped steel requires no maintenance
Application of paint, in a wet process or powder process, to the zinc coat will further extend the lifetime of the article.
Approved systems for wet-painting of hot-dipped steel are given in Norsok standard M-501, system 6.