Alumina HT Fiber Bulk is referred to refractory fiber with alumina content more than 72%,whose service temperature can reach 1600°C(2912°F).With high alumina content and less shot,1600 Alumina HT Fiber Bulk products possess low thermal conductivity and low thermal linear shrinkage and superior thermal stability and corrosion proof,which have a longer service life in the harsh high temperature,even corrosion atmosphere.