Hot dip galvanizing is a process where steel or iron parts are coated with a layer of zinc to protect them from rust and corrosion. The metal is first cleaned thoroughly to remove any dirt, oil, or rust. It is then dipped into a bath of molten zinc at a high temperature. The zinc forms a strong, durable coating that bonds with the surface of the metal. This method provides long-lasting protection and is widely used in construction, agriculture, transportation, and various industrial applications. It is especially effective for outdoor structures and components exposed to harsh environments.