Standard UV block quartz tube
It is used for most of the ultraviolet filtering lamps such as ultraviolet tungsten halogen lamp, ultraviolet mercury lamp, metal halide lamp and ultraviolet sleeve tube.
Product Feature：
A doped transparent quartz tube, which has a softening point about 50℃lower than conventional transparent quartz tube, absorbs UV-A / B / C, filters out almost all ultraviolet rays, and has a very low level of OH control ( can be less than 2 ppm). And Extend lamp life.
Typical Size:（mm）
| O.D. Fange | O.D. Tolerance | Thickness | WT Tolerance | Out of Round | Siding | Bow |
|---|---|---|---|---|---|---|
| 3<OD≦10 | ±0.10 | 1.0∼2.0 | ±0.15 | 2% | 0.12 | 0.15% |
| 10<OD≦20 | ±0.20 | 1∼2.5 | ±0.15 | 1.25% | 0.12 | 0.15% |
| 20<OD≦30 | ±0.25 | 1.5∼3.0 | ±0.15 | 1.25% | 0.12 | 0.15% |
| 30<OD≦40 | ±0.35 | 1.5∼4.0 | ±0.15 | 1.25% | 0.12 | 0.15% |
| 40<OD≦50 | ±0.2 | 2.0∼4.0 | ±0.15 | 1.25% | 0.12 | 0.15% |
| 50<OD≦60 | ±0.5 | 2.5∼5 | ±0.15 | 1.25% | 0.12 | 0.15% |
| 60<OD≦80 | ±0.7 | 3.0∼5.5 | ±0.15 | 1.25% | 0.12 | 0.15% |
| 80<OD≦100 | ±0.8 | 3.0∼10.0 | ±0.15 | 1.25% | 0.12 | 0.15% |
Mechanical & Thermal Properties：
| Density（20°C kg/m3） | Thermal Expansion (200 ~300°C C-1) | Softening Point (°C ) | Annealing Poing (°C ) | Strain Point (°C ) |
|---|---|---|---|---|
| 2.1*103 | 5.8*10-7 | 1630 | 1180 | 1070 |
Impurity Value: (ppm)
| Impurity | Na | K | Mg | Li | Ca | Fe |
|---|---|---|---|---|---|---|
| typical value | 5.0 | 1.5 | 1.0 | 1.5 | 3.0 | 1.0 |
OH Content: (ppm)
| Typical Value without Baking | After baking |
|---|---|
| 130 | <10 |
Optical Properties:
