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
≤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% 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
properties: It can almost prevent all the UV rays
application: It serves as UV-stop halogen lamp, UV-stop mercury lamp, and the sleeve for UV-stop metal halide lamp
