High Purity Quartz Glass Pipe Furnace Tubes, OD:6-45mm,Can Customize Quartz Glass Tube - High Purity Glass Tube and Quartz Glass Buy High Purity Infrared Heater Quartz Glass Pipe directly with low price and high quality. 12 Mixed Coloured 3.3 Glass Tubes 750mm Long 10mm OD 1.5mm Oil Burner Pipe 200mm,Blowing Glass Tube,OD=12mm,1mm=Thcik,Made Form Borosilicate,10Pcs 12mm Glass Tubing Linear Coefficient of Expansion------ (5., 3~5., 8)×10^(-7) , Softening Point-----1730℃