In this study, we showed that the main method of solving the corrosion problems in all parts of this factory was reducing the chloride content of water to an acceptable level by modifying the water softener. Beside, two other solutions were suggested. The first one was using stainless steel type L instead of type 304 and another one using high quality welds instead of the previous ones, but these methods weren`t feasible according to the economic condition of that factory.