annual rate contract for supply of castable refractory for ntpc stations , plant-sipat-insulation castable,61.5% alumina castable , plant-farakka-cast refrac,grade a,1750 c,is10570,5 mm , plant-kahalgaon-insulation castable,61.5% alumina castable , plant-talcher-cast refrac,grade a,1750 c,is10570,5 mm , plant-barh-insulation castable,61.5% alumina castable , plant-barh-insulation castable,45% alumina castable , plant-northkarnapura-insulation castable,61.5% alumina castable , plant-ramagundam-insulation castable,61.5% alumina castable , plant-simhadri-insulation castable,61.5% alumina castable , plant-bongaigaon-cast refrac,grade a,1750 c,is10570,5 mm , plant-mouda-cast refrac,grade a,1750 c,is10570,5 mm , plant-solapur-insulation castable,61.5% alumina castable , plant-kudgi-insulation castable,45% alumina castable , plant-kudgi-cast refrac,grade a,1750 c,is10570,5 mm , plant-lara-insulation castable,61.5% alumina castable , plant-gadarwara-insulation castable,45% alumina castable , plant-darlipali-insulation castable,61.5% alumina castable , plant-darlipali-insulation castable,61.5% alumina castable , plant-darlipali-cast refrac,grade a,1750 c,is10570,5 mm , plant-khargone-insulation castable,45% alumina castable , plant-telangana-insulation castable,45% alumina castable , plant-telangana-cast refrac,grade a,1750 c,is10570,5 mm , plant-barauni-insulation castable,61.5% alumina castable , plant-muzaffarpur-insulation castable,61.5% alumina castable , plant-brbcl-insulation castable,45% alumina castable => limited