RAVI REFRACTORIES CORPORATION CONTROLLERS Offering the most complete line of Acid / Alkali Proof Materials and lining systems. which saves your prestigious and expensive industrial statures like effluent treatment plants, reaction and storage tanks, chemical processing floors, drainage systems, neutralizing tanks, acid storage tanks and yards, waste water collecting tanks, plant and machinery foundations, pits, etc. from Corrosion. Our High Quality garded acid proof cements and lining systems...