... , thermocouple, copiers lights, water treatment lamp casing, all kinds of quartz vessels, pipelines and other fields. quartz tube, clear quartz ... quartz sand,produce crystal powderTolerance Dimensional Tolerance Diameter Range Range of OD OD OD Thickness WT-degree partial wall Siding ... 20 °C kg * m-3 (× 103) 2.2 Coefficient of Thermal Expansion Coefficient of expansion 25-300 °C °C -1 (× 10-6) 0 ...