UV stop quartz tubes /Quartz tubings/UV blocking silica tube for germicidal lamps

Quartz tubing.clear,cut surface slig-ht purple.
UV-stop quartz tube
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
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