Tender For corrigendum : supply of is-8 furnace bricks , is 1927-1 castable , is-8 fire bricks as per drawing , is-8 special fire brick as per drawing , i s-8 special fire brick as per drawing no 13 , is-8 special fire brick no 19 , is-1927 fire cement , is-8 special fire brick as per drawing no.2 , is-8 special fire brick as per drawing no.8