... plate is reciprocal rolling, Rectify, Alkaline washing, Acid washing, Tin plating, and Passivating etc treatment, then re-rolling it. ... feed steel roll, 2. trimming machine, 3.welding machine, 4. entrance lopper, 5. degrease, 6. electrolytic tin coating, 7.hot air drying, ... .Degreasing, 11.Electrostatic oiling, 11.exit looper,12.cutting machine or scroll sheeting. Tin coating Production Line