supply of inner cone for coal mills ( hp-1103 ) to rgtpp, khedar, hisar. , inner cone for coal mill hp-1103 ( fabricated in 4 equal parts ) , ceramic tile fitted with weld plug from inside of the cone, moc of plate is ss-202, thickness of ss plate-10mm. specification of ceramic tile: thickness-20 mm, weldable with plug, alumina content more than 90%, hardness more than 8 on mohs scale, colour-white, bulk density more than than 3.2 gm / cc, water absorption less than 0.5%, cold crushing strength more than 3000kg / cm2, flexural strength ( at room temperature ) more 2200kg / cm2, flow medium is pulverized coal mixture. testing of ceramic tile from cgcri approved laboratory.