Borosilicate material clear high precise glass tube, high temperature glass tube
YuanBo Engineering Co., Ltd. specializes in producing high quality glass products for more than 10 years. We have technically advanced machinery, skillful worker as well as professional salesman, so that we have confidence to provide the satisfactory high quality products to customers. Our main glass products include gauge glass, optical glass, step glass, glass disc and tube, lab glassware, glass rod and glass panel.
Why choose Us
YuanBo Engineering Co.,Ltd specializes in producing glass products for more than ten years. We have payed attention to best quality and service. In order to make sure that, we have a professional team and use advanced equipment.
- Best quality products
- Advanced equipment
Professional team and first class service
Glass tubes are made of soda-lime, borosilicate or quartz material and they have broad range of quality. Glass tubes are widely used in laboratory, chemical industry, biology industry, gardening, and so on.
According to different dimension and accuracy, glass tubes can be divided into normal glass tube, precision glass tube and heavy wall capillary tube three kinds. The smallest tolerance we can achieve is 0.005 mm, which requires very high technology. Our glass tubes have stable chemical property and can resist most acid and alkali. The glass tubes can also work under high temperature for a long time.
With good chemical, mechanical and thermal properties, small tolerance and various dimension, the glass tubes are widely used in daily life, industry and laboratory.
Glass tubes diameter and tolerance | ||||
| Inside diameter | Tolerance | Outside diameter | Tolerance |
Normal glass tube | 5-500 mm | 0.5 mm | 5.1-550 mm | 0.5 mm |
Precision glass tube | 5-500 mm | 0.005 mm | 5.1-550 mm | 0.005 mm |
Heavy wall capillary tube | 0.025-0.508 mm | 0.02 mm | 0.5-6.4 mm | 0.4 mm |
Glass tubes thermal properties | |||
Material | Soda-lime | Borosilicate | Quartz |
SiO2 content | 60% - 75% | >81% | >90% |
Density (25 ℃) | 2.53 | 2.23 | 2.20 |
Coefficient of thermal expansion | 8.6 × 10-6 | 3.3 × 10-6 | 5.5 × 10-7 |
Softening point | 726 ℃ | 820 ℃ | 1780 ℃ |
Melting point | 780 ℃ | 1680 ℃ | 2000 ℃ |
Annealing point | 546 ℃ | 560 ℃ | 1120 ℃ |
Temperature for short time | 400 ℃ | 500 ℃ | 1500 ℃ |
Temperature for long time | 350 ℃ | 450 ℃ | 1200 ℃ |
Specific heat | 0.18 J/℃ | 0.9 J/kg℃ | 670 J/kg℃ |
Please let me know the following information to get the best quotation:
- Material
- Outside diameter
- Wall thickness
- Tolerance
- Length
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