alundum tube 1,95-99.7% Alumina purity, 2,Voltage resistance, 16-25V, 3,Available for tube furnace stove YC-Alundum tube fire pipe ,High alumina ceramic tube , Industrial ceramic tubeHigh purity alumina ceramic tube alundum tube fire pipe rod1. Material:95%or99% alumina2. Length:20mm-2500mm3. Good Surface and Precise Size, High quality4. CustomizeThe pipe has the high abrasion resistant , ...