We recommend Acid proof Clay Bricks for Tanks equipments subjected to static head of liquids which require thicker bricks for the stability of lining as Acid Proof Granite Bricks will be too expensive than Acid proof Clay Bricks for Tanks. We recommend Acid proof Clay Bricks for Tanks equipments subjected to static head of liquids which require thicker bricks for the stability of lining as Acid Proof Granite Bricks will be too expensive than Acid proof Clay Bricks for Tanks.