Galvanized coil is a type of steel sheet coil that has undergone special treatment to enhance its corrosion resistance, aesthetics, and service life through galvanizing process. Galvanized coils are mainly produced using hot-rolled steel strips or cold-rolled steel strips as substrates through continuous hot-dip galvanizing processes. According to different supply forms, hot-dip galvanized sheet and hot-dip galvanized coil are widely used in various fields such as construction, home appliances, automobiles, containers, transportation, and agriculture.