DURABLOCK RFA SUPER (24x12x4.5) is Pre-cast Pre-fired Refractories Shapes in India by Calderys refractories. These Oil-fired Furnaces, Gas Fired Furnace, Highly Controlled Environment, Soaking Zone, Reheating Furnace, Pusher Type Reheating Superior Abrasion Resistance, Superior Hot Strength, Superior Packing Density, Low Porosity, Chemical Inert Towards Molten Coal Ash.