Iron, steel, aluminum and galvanized parts are applied for iron phosphate coating before powder and wet paint. The concentration should be between 1-1.5%, the processing time is 1.5-2 minutes, the temperature should be between 45-50C. Phosphate coating weight of 0.2 – 0.7 g / m 2 is obtained. It can be used separately for dipping or spray applications, and can be used with neutral degreasing additives in a single treatment bath.