Specification :

This cerium-added quartz tube can effectively prevent all radiation of UV-B and UV-C ultraviolet and most radiation of UV-A ultraviolet .It is the best materials to prevent UV with best transparent performance. It can be used to make quartz halogen lamp , gas discharge lamp and other UV lamp-house , which will effectively protect human and object from hurt of ultraviolet and maintain the best efficiency of light transmission.

Dimensional Tolerance

Range of OD OD WT Siding Out of Round Bow/ 1220mm
d6mm ± 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% 3.0mm
25.00-30.00mm ± 1.35% ± 12% 15% 1.5% 3.0mm

Chemical Composition Unit: ppm

Cr Ge Fe Mg Ti Ca Al Na Li K OH
 0.5  0.4 1.5 0.5 2.5 2.3 25 2.5 0.6 2.5 1-50

Physical Properties

Density 20 kg.m-3 ( × 103) 2.2
Coefficient of expansion 25-300  -1 ( × 10-6) 0.58
Softening point  1620
Annealing point  160
Strain point  1060
Youngs modulus Pa 7.1× 105

Spectral Transmission at 1.0mm Thickness

Nm  220 230-280 290-330 315 350 380 590 780
% 0  19 0 15 88 92 93 93
12.0± 0.20 1.0± 0.10 12% 1.5% 2.5mm
13.0± 0.22 1.0± 0.10 12% 1.5% 2.5mm
12.0± 0.3 1.5± 0.10 12% 1.5% 2.5mm

Physical & Chemical Properties
Opalescence SiO2 Heat Resistance
Spectral transmission at 500nm 10% SiO2 99.5% Keep under 900 for 15 minutes, then put into 20 water, no crack after 3 times.