Are there zinc dross or streaks on the surface of the hot-dip galvanized sheet? The problem might be with the operation of the galvanizing bath
The surface quality of hot-dip galvanized steel sheets is a core indicator of their quality, and zinc dross and streaks are the two most common and significant types of defects. These defects not only damage the product’s appearance but also significantly weaken the corrosion resistance and adhesion of the coating.

