In the hot-dip galvanizing wire line, the acid surface cleaning process is a step performed to clean and prepare the wire surface before galvanizing. This process aims to remove oxide, oil, dirt, and other contaminants from the wire.

Acid surface cleaning allows for a more effective application of the zinc coating during the galvanizing process. It also ensures better adhesion of the zinc coating to the wire surface after galvanizing, resulting in a more durable and corrosion-resistant coating.