Boiler insulation material ceramic fiber blanket The Ceramic Fiber Needle- ... Steel industry → Heat treating and annealing furnace,furnace lining and seals,reheating furnace and ladle covers,furnace hot face repairs,soaking hit covers ... generation → Boiler insulation,expansion seals and covers insulation 5.Others → insulation of commercial dryers and ovens,refractory materials,glass furnace insulation, ...