Al2o3 Sheath 1.Material: 85 - 99.7% alumina ceramic 2.Purpose:used in various furnace 3.High purity Al2o3 Sheath Gongtao company mainly produce alumina tubes, rods and various industrial ceramic parts, which are mainly used in thermalcouple temperature, liquid steel continous temperature, various industrial furnace(containig vacuum furnace, carburizing furnace, wire furnace, atmosphere furnace ...