UV Blocked quartz tube or UV stop quartz tube

It is the best materials to prevent UV with best transparent performance. It can be used to make quartz halogen lamp.
UV Blocked quartz tube

Add cerium to 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.
It can effectively prevent the harm to the skin of people and objects that have to be under the explosion of UV radiation and set out the maximum visible light at the same time.
Dimensional Tolerance
Range of OD
OD
WT
Siding
Out of Round
Bow/1220mm
<6mm
±2.0%
±10%
12%
2.0%
2.5mm
6.00-15.00
±1.25%
±8%
10%
1.5%
2.5mm
15.00-20.00
±1.25%
±10%
15%
1.5%
2.5mm
20.00-25.00
±1.25%
±10%
15%
1.5%
3.0mm
25.00-30.00
±1.35%
±12%
15%
1.5%
3.0mm

Chemical composition unit : ppm
Al
Fe
K
Na
Li
Ca
Mg
Cu
Mn
Pb
B
Cr
OH
25
1.5
2.5
2.5
0.6
2.3
0.5
0.1
0.5
0.01
0.2
0.1
1-50
Physical Properties
Density 20 kg*m
-3
(×10
3
)
2.2
Coefficient of expansion 25-300
-1
(×10
-6
)
0.56
Softening point
1630
Annealing point
1180
Strain point
1070
Youngs modulus(Pa)
7.3×10
5
Spectral Transmission at 1.0mm Wall Thickness
Nm
185
<220
230-280
290-330
315
350
380
590
780
%
0
0
<19
0
15
88
92
≥92
≥93