Acid Tin Plating is a Tin Plating Process. Acid Tin Plating on Aluminum Pistons. It is a world class latest innovation to Tin Plate the Pistons giving Tin Coating thickness of 0.5 micro onwards. Leading to the best and minimum tolerance in the machining of the Pistons. Above all it is easy to operate as it works on Room Temperature Acid Tin Plating Process is the Latest and well accepted process in Piston Manufacturers in India and on the Globe.