кварцевая пластина / кварц диск / кварц лист / кварц панель

Quartz Glass Lens (quartz lens) Made from high purity quartz ingot. No bubble and dirts, Accurate sawing , grinding, polishing, it can stand high temperature and pressure .And the size can be accurate controlled according to your request. Use as viewport for many equipments. such as boiler furnace. melting furnace. Lamp cover, lamp shade. Stage lens. Led lens ,Reflector lens , sight lens, Front Lens, Molded lens, Spot lens, Physical Properties Density 20 kg*m-3(×103)2.2 Coefficient of expansion 25-300 -1(×10-6)0.56 Softening point1630 Annealing point1180 Strain point1070 Youngs modulus(Pa)7.3×105