Tubes made of transparent quartz glass
We offer quartz tubes of different diameters and thicknesses made of various types of quartz glass. Typically are available pipes made of the following types of quartz glass (see the properties of the JGS type quartz glass described here):
-
JGS-2 (UV optical quartz glass). It is an optical quartz glass made by oxyhydrogen flame melting and is suggested for applications in the wavelength range of 220-2500 nm !
-
Ozone free quartz. It is clear quartz tube doped with Ti. Has a strong ability to prevent dense UV radiation but release no ozone. Ozone-free quartz tubing is clear, with cut surface slight purple. The product blocks wavelength < 220 nm, while transmit over 70% in 253.7 nm. Good for all kinds of germcidal lamps.
-
UV stop quartz tubes. It is the best materials to prevent UV with best transparent performance. 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 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.
Typical pipe length is 1240 mm, but usually we deliver it cropped according to customer requirements.
Chemical composition (ppm by weight, analysis via direct spectrometer reading)
| 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 | <10 |
Dimensional tolerance
| Range of OD | WT | Siding | Out of Round | Bow/1220mm |
|---|---|---|---|---|
| 5.0 mm ± 0.08 | 1.0 ± 0.06 | 10% | 1.5 % | 2.5 % |
| 12.0 mm ± 0.10 | 1.0 ± 0.10 | 10% | 1.5 % | 2.5 % |
| 15.0 mm ± 0.12 | 1.0 ± 0.12 | 15% | 1.5 % | 2.5 % |
| 17.0 mm ± 0.15 | 1.0 ± 0.15 | 15% | 1.5 % | 2.5 % |
| 18.5 mm ± 0.15 | 1.0 ± 0.15 | 15% | 1.5 % | 2.5 % |
| 19.0 mm ± 0.20 | 1.0 ± 0.15 | 15% | 1.5 % | 2.5 % |
| 25.0 mm ± 0.30 | 1.0 ± 0.20 | 15% | 1.5 % | 2.5 % |
OD - outer diameter
WT - wall thickness
Physical properties
| Property | Unit | Value |
|---|---|---|
| Density (at 20 °C) | kg/m3 *103 | 2.2 |
| Ceofficient of expansion (in range 25-300 °C) | 1/°C *10-6 | 0.56 |
| Softening point | °C | 1630 |
| Annealing point | °C | 1180 |
| Strain point | °C | 1070 |
| Youngs modulus | Pa * 105 | 7.3 |
Spectral transmission at 1.0 mm thickness
| Wavelength | [nm] | 185 | <220 | 230-280 | 550 | 590 | 780 |
|---|---|---|---|---|---|---|---|
| Transmittance | % | 0 | 0 | ≥85 | ≥90 | ≥92 | ≥92 |
Chemical composition (ppm by weight, analysis via direct spectrometer reading)
| Cr | Ge | Fe | Mg | Ti | Ca | Al | Na | Li | K | OH |
|---|---|---|---|---|---|---|---|---|---|---|
| <0.5 | <0.4 | 1.5 | 0.5 | 2.5 | 2.3 | 2.5 | 2.5 | 0.36 | 2.5 | 1-50 |
Dimensional tolerance
| Range of OD | OD | WT | Siding | Out of Round | Bow/1220mm |
|---|---|---|---|---|---|
| <= 6 mm | ± 2,0 % | ± 10 % | 12% | 2.0 % | 2.5 mm |
| 6 - 15 mm | ± 1,25 % | ± 8 % | 10% | 1.5 % | 2.5 mm |
| 15 - 20 mm | ± 1,25 % | ± 10 % | 15% | 1.5 % | 2.5 mm |
| 20 - 25 mm | ± 1,25 % | ± 10 % | 15% | 1.5 % | 3.0 mm |
| 25 - 30 mm | ± 1,35 % | ± 12 % | 15% | 1.5 % | 3.0 mm |
OD - outer diameter
WT - wall thickness
Physical properties
| Property | Unit | Value |
|---|---|---|
| Density (at 20 °C) | kg/m3 *103 | 2.2 |
| Ceofficient of expansion (in range 25-300 °C) | 1/°C *10-6 | 0.58 |
| Softening point | °C | 1620 |
| Annealing point | °C | 1160 |
| Strain point | °C | 1060 |
| Youngs modulus | Pa * 105 | 7.3 |
Spectral transmission at 1.0 mm thickness
| Wavelength | [nm] | <220 | 230-280 | 290-330 | 315 | 350 | 380 | 590 | 780 |
|---|---|---|---|---|---|---|---|---|---|
| Transmittance | % | 0 | <19 | 0 | 15 | 88 | 92 | 93 | 93 |
While every attempt has been made to verify the source of the information, no responsibility is accepted for accuracy of data.