This is the most perilous part of the Zinc Coating Process. The steel is unconstrained into liquid zinc at a temperature of about 450°C. The zinc and steel together mix and builts a strong connection. After that, the steel cools down and forms a sturdy defensive layer. This layer keeps chemicals, moisture, and rust from getting in. https://www.vgsteel.com.my/zinc-coating-procedure-steel-fabrication/