high purity, elevated temperature characteristics and low coefficient of thermal expansion Clear Quartz Glass Rod Dimensional Tolerance Range of OD OD OD Thickness Siding Out of Round Bow/1220mm ≤ 6mm ± 2.0% ± 10% 12% 2.0% 2.5mm 6.00-15.00mm ± 1.25% ± 8% 10% 1.5% 2.5mm 15.00-20.00mm ± 1.25% ± 10% 15% 1.5% 2.5mm 20.00-25.00mm ± 1.25% ± 10% 15% 1.5% 2.5mm 25.00-30.00mm ± 1.35% ± 12% 15% 1.5% 2.5mm ...