procurement of castable refractory for refractory work inside ba hopper during overhauling of unit1ahp mm,stgisgtpp , procurement of castable refractory for refractory work inside ba hopper during overhauling of unit1ahp mm,stgisgtpp , refractory,fire crete special castable recommended service temperature 1350 degc,refractoriness (min) 1450degc,dry density (kg/m3) 2250,coldcrushing strength (kg/cm2) 40 0(at 110degc) and ( material shall be as per calderys specifications and should be fire crete special. chemical composition must be as: (1) al2o3:45% min. (2) fe2o3 within 4%, (3) sio2:46% max. equivalent : ind fh-45 spl, packing:25kg hdpe bag )