• Lianyungang Granhtquartz Factory

Twin Quartz Tube

The Twin Quartz Tube is available in sizes: single outer diameter x double outer diameter (8x17 mm, 11x23 mm, 15x33 mm). The surface of the tube is smooth and colourless. The surface is done with gold plating. Properties: high purity (SiO2>99.99%), abrasion resistance (any acid except HF acid), fire resistance (softening point 1700 centigrade), low coefficient of thermal expansion (5.5x10-7/centigrade, heat the tube to around 1100 centigrade, then put it into ordinary temperature water, the tube won't crack). Length ranges from 400-4000 mm.