CHROME PLATING CAN BE DONE AS CHEMICAL AND ELECTROCHEMICAL METHODS ON THE METALS SURFACE AND METALIC COATED MATERIALS IN A SOLUTION MEDIA OF CHROMIC ACID, CHROMATE, AND DICHROMATE.THIS OPERATION CAN CAUSE A PASSIVE COATING ON THE METALS BY THE CHROMIUM (III) AND CHROMIUM (VI) COMPOUNDS. ALTHOUGH THE CHROMIUM (VI) -BASED COMPOUNDS REPRESENT HARMFUL EFFECTS ON THE EMPLOYEE AND USER HEALTH, GALVANIZING PLANT AT STEEL COMPANY OF MOBARAKEH HAD BEEN USED THESE MATERIALS. THIS PROBLEM CAN BE INCREASED WHEN PEOPLE EMPLOY THE PRODUCT WITHOUT ANY SAFETY TOOLS. RECENTLY, USING OF THESE MATERIALS IN THE MANUFACTURING PROCESS ARE LIMITED OR FORBIDDEN DUE TO THESE HEALTH PROBLEMS. THUS, AT THE GALVANIZING PLANT THE LESS HARMFUL MATERIALS SUCH AS THE CHROMIUM (III) -BASED MATERIALS ARE USED INSTEAD OF CHROMIUM (VI) -BASED ONES. TO GET THIS OBJECTIVE PRETREATMENT OF THE COILS IS NECESSARY AS FOLLOWS: FIRST, THE COILS WAS CLEANED USING ALKALINE SOLUTIONS. THEN, THE COILS WAS WASHED USING DEMINERALIZED WATER AND DRIED. AFTER PRETREATMENT OF THE COILS, TWO APPROACHES CAN BE DONE TO PROTECT THE COILS: 1- SPRAYING AND DEWATERING, IN THIS METHOD THE SOLUTION IS SPRAYED ON THE BOTH SIDES OF MOVING SHEETS AND DEWATERING IS DONE BY THE APPROPRIATE ROLLS. THE REMAINING WET CAN BE DRIED BY BLOWING THE WARM AIR (THIS METHOD IS USED AT GALVANIZING PLANT OF STEEL COMPANY OF MOBARAKEH).2- FLOATING AND DEWATERING, IN THIS METHOD THE COILS ARE MOVING AT THE BATHS FILLED OF CHROMIUM SOLUTION AND DEWATERING IS DONE THE SAME AS ITEM 1.THE APPROPRIATE MATERIALS FOR THIS OBJECTIVE HAVE SEVERAL CHARACTERISTICS INCLUDING: A) THE MATER SHOULD BE SPRAYABLE (WITHOUT ANY EXCESS WASHING), AND COLORLESS. B) IT SHOULD BE USABLE AT OPERATION TEMPERATURE. C) IT SHOULD BE PASSIVE RATHER THAN THE SALT SPRAY TO 48 HOURS. D) THE COATING SHOULD BE STABILE FOR A LONG TIME STORING.