Generally speaking, iron drums do not need electrophoresis treatment, but degreasing and phosphating treatment are needed in the production process to ensure good adhesion on the surface after painting, roller coating or printing, that is, the paint layer is firm.

Specifically, it can be polished with sandpaper, depending on the coating, which should generally be one layer.

The general production process of coated iron drum is as follows: after degreasing and phosphating, steel is dipped, coated with epoxy primer, dried, roller coated and coated with corresponding packaging patterns. Then drying, and finally winding and forming in a drum winder.