Porous Fire Clay Bricks are used for steel casting pits, boilers, coke oven bricks, blast furnaces, induction furnaces, kilns, ladles, foundries, boilers, combustion chambers, etc. These Fire Clay Bricks contain Al2O3% in the range of 34 to 47. These Fire Clay Bricks come in minimum porosity ranging from 16% to 25%. These Porous Fire Clay Bricks also contain Fe2O3% in the range of 1.5 to 2.0.