u shape quartz glass tube 1.resistant high temperature above 1000C 2.resistant strong acid & alkali u shape quartz glass tube 1. SiO2>99.99%, high purity quartz tube, OH content less then 2PPM 2. Max working temperature is 1600°C3. Excellent visual and chemical performance, high thermo-stability, anticorrosive, Transmittance of visible light>90%. 4. Widely used in semiconductor, lighting and ...