1.High purity
2.High temperature resistant
3.Good corrosion resistant
4.Good light transmittance
Certification: ISO 9001, ISO14001, OHSAS18001
This large diameter quartz tube has the typical characteristics of hiht purity, good spectral transmission, well controlled dimension and lower OH and so on. It serves as the first choice of heat resistant material for halogen lamps, mercury lamps, metal halide lamps and other quartz lamps. This glass can be supplied in the range of 3-80mm outside diameter, 0.6-2.0mm wall thickness and 800-2400mm length. Exhaust tubes with good CPK are suitable for high-speed streamline production. And further prcessing of trim cutting, fire polishing, bending and pinching can be done according to the requirement of customers. OH-content can be controlled within20ppm\15ppm\5ppm\2ppm according to the requirement of customers.
The detailed dimensional tolerance and technical data can be found in the following tables.
Table 1 Dimensional Tolerance
| Range of OD | OD | WT | Siding | Out of Roud | 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 |
| 30.00-80.00mm | ±1.5% | ±14% | 15% | 2.0% | 3.0mm |
Tabel 2
| Physical Properties | 214 | 219 | 254 |
| Density(g per cc) | 2.2 | 2.21 | 2.21 |
| Coefficient of Thermal Expansion(cm per cm°C) | 5.5×10-7 | 5.9×10-7 | 6.7×10-7 |
| Softening Point(°C) | 1683 | 1660 | 1615 |
| Annealing point(°C) | 1215 | 1204 | 1163 |
| Transformation point(°C) | 1120 | 1106 | 1066 |
| refraction point | 1.4585 | 1.456 | 1.46 |
| specific heat(j per kgok) | 670 | 700 | 690 |
| compressive resistance(Pa) | >1.1×109 | 0.94×1010 | 0.55×1010 |
| Young modulus(Pa) | 7.2×1010 | 7.5×1010 | 7×1010 |
| permittivity(@1MHZ) | 3.75 | 5.8 | 6 |
Application: This large diameter quartz is widely used in halogen lamps, mercury lamps, single-ended lamp, automobile lamp, stage lamp, thermocouple, copiers lights, water treatment lamp casing, all kinds of quartz vessels, pipelines and other fields.
If you are interested in our products, please contact with us.
Donghai Shengda Quartz Products Co., Ltd.
Tel: 86-518-87512111
