The success of any industrial coating system is determined well before the final powder coat or paint is applied. Proper surface preparation is the foundation of performance. Without it, coatings are prone to poor adhesion, premature corrosion, and early failure. Among the most widely used pretreatment processes, zinc phosphating and iron phosphating remain essential for creating reli... https://www.professionalpowdercoating.ca/zinc-vs-iron-phosphating-which-surface-prep-method-improves-coating/