Like a selection of other processes such as powder coating, hot dip galvanisation or HDG for short is carried out to prolong the life of the steel product. It's a process that is over 150 years old and involves immersing the metal into a bath of zinc which is heated to high temperatures (around 460 °C). Once cooled the zinc coating metallurgically bonds to the steel forming a protective layer. With this in mind, here are ten solid reasons...

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