Tall aluminous brick is the model firebrick such as the T-3 of national level, and what T represents is general brick, z represents straight form brick, - 3 it is length, norms is length 230mm, width 114mm, high 65mm reachs standard brick. Additional T-19 T-20 of brick of axe of knife brick T-38 T-39 of course of the manufacturing level according to every manufacturer different, common content is in tall aluminous brick 60% above, wait for each index along with fireproof temperature rise, al2O3 content also is rising. And the different cent of aluminous content of basis of tall aluminous qualitative firebrick is: Of 48, of 55, of 65 and of 75. The volume that contain aluminium uses temperature higher taller also, the price is expensive of course. Tall nevertheless aluminium (qualitative) bricky content is become in the ability of 65 above tall aluminous brick, have 65% commonly, 70% , 75% , 65% call brick of tall aluminous clay commonly below.