Low Price Quartz Glass Tube for heaters:
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General Characters
-High purity, SiO2>99.9%
-High temperature resistance
-Anti-corrosion
-Electrical insulation
-High spectral transmission >90%
-High temperature stability
| Physical properties | |
| SiO2 : | 99.99% |
| Density : | 2.2(g/cm3) |
| Degree of hardness mosh' scale : | 6.6 |
| Coefficient of expansion 25--300℃ ℃-1 ( ×10-6 ) | 0.58 |
| Melting point: | 1732°C |
| Working temperature : | Under 1100°C |
| Max temperature can reach in a short time : | 1450°C |
| Acid tolerance: | 30 times than Ceramics , 150 times than Stainless steel |
| Visible light transmittance : | above 93% |
| UV spectral region transmittance: | 80% |
| Resistance value : | 10000 times than ordinary glass |
| Annealing point: | 1180°C |
| softening point: | 1630°C |
| Strain point: | 1100°C |
| Dimension Tolerance(mm) | |||||
| Designation | OD | WT | Max. Siding | Max. Ovality | Max. Bow |
| 1-3mm | ±0.05 | ±0.05 | 0.05 | 0.05 | 1‰ |
| 3-10mm | ±0.1 | ±0.1 | 0.1 | 0.15 | 2‰ |
| 10-20mm | ±0.2 | ±0.1 | 0.1 | 0.2 | 2‰ |
| 20-30mm | ±0.3 | ±0.15 | 0.15 | 0.2 | 2‰ |
| 30-40mm | ±0.4 | ±0.15 | 0.2 | 0.2 | 2‰ |
| 40-50mm | ±0.5 | ±0.2 | 0.25 | 0.25 | 2‰ |
| 50-65mm | ±0.6 | ±0.2 | 0.35 | 0.25 | 2.5‰ |
| 65-85mm | ±0.8 | ±0.3 | 0.45 | 0.3 | 2.5‰ |
| 85-100mm | ±1 | ±0.3 | 0.5 | 0.5 | 2.5‰ |
| 100-150mm | ±1.5 | ±0.4 | 0.5 | 0.8 | 3‰ |
| 150-200mm | ±2 | ±0.6 | 0.6 | 1 | 4‰ |
| 200-300mm | ±3 | ±0.8 | 0.7 | 2 | 5‰ |
| Spectral Transmission at 1.0mm Thickness | ||||||||
| nm | 220 | 255 | 280 | 315 | 350 | 380 | 590 | 780 |
| % | 89 | 91 | 93 | 93 | 93 | 93 | 93.2 | 93.4 |
| Chemical Composition, unit: PPM | ||||||||
| K+Na | Ca | Fe | Al | Mg | Ti | Ba | Li | Cu |
| <10 | <3.0 | <1.5 | <20 | <1.0 | <3.0 | <0.2 | <1.0 | <0.5 |
Packing method:
Each product with a bubble bag, and put into carton box, and then packed in wooden case.
Sample service
Available in stock, samples will be sent as free, but freight cost is on customer side.
No stock, sample cost will be charged.
OEM service
Welcome OEM drawing.
Quick response and flexcible communication time
Feedback within 12hours, and free to communicate during 7:00~22:00.
Since 2005
Specialized in making further processed quartz products as below:
Larger diameter quartz tube
Capillary quartz tube
Milky quartz tube
Quartz plate(block/sheet/disc/..)
Quartz rod
IR quartz heating lamp
Electric-thermal film coated quartz heating tube
We can make various quartz products as your drawing.
Provide OEM and ODM.
Professional sales and service team
Q: Are you a factory or trading company?
A: We are a factory.
Q: Where is your factory located? How can I visit there?
A: Our factory is located in Lianyungang, China, about 2hours by air from Shanghai.
Q: What is the material of your products?
A: The material is quartz, SiO2 99.99%
Q: Does your company support "Trade Assurance"?
A: Yes, up to 11000USD currently.
What is the payment term?
We accept T/T, PayPal, Western Union, L/C.
Q: How about the delivery time?
10-15 working day after payment received.