An evaluation of the quality plating using statistical methods. Prepared new methodology for evaluating from the point of view appearance characteristics and morphology of the coating. samples which were coated with a surface treatment galvanizing weakly acidic. Experience was carried out using the methodology DoE (experimental design) with six independent variables. The results showed that zinc chloride concentration in the electrolyte is not effect on the final quality of the zinc coating. By increasing the sodium chloride concentration in the electrolyte, while increasing the temperature Electrolyte observed deterioration the overall quality of the coating.