The Quartz Tubes Manufacturer!
Alfa Quartz was established in 2013. It is a manufacturer that researches, develops, produces, and sells high-quality semiconductor quartz components, quartz glass instruments, optical quartz glass sheets, PV (Photovoltaic) quartz boats/boat trays, and other accessories.
Why choose us
Professional Team
We provide leading providers of analysis, testing, quality assessment, and failure analysis solutions. As a recognized expert in the field of glass, we provide our customers with reliable solutions, explanations and recommendations.
Best Quality Control
In order to present the best performance, we conduct high standard tests each product between every step. It is guaranteed that our products are qualified by ISO 9001, RoHs, HF and REACH certifications.
Main Market
Our quartz products are sold well in many countries such as the United States, Germany, the United Kingdom, Canada, Japan, and South Korea.
|
Physical Properties |
Values |
|
Purity |
＞99.99% |
|
Density |
2.2g/cm3 |
|
Transparency |
＞90% |
|
Mohs Hardness |
5.5--6.5 |
|
Deformation Point |
1280℃ |
|
Softening Point |
1750℃ |
|
Annealing Point |
1250℃ |
|
Specific Heat (20 - 350°C) |
670J/kg.℃ |
|
Thermal Conductivity (20°C) |
1.4W/m.℃ |
|
Heat Conductivity (w/m.k,1000 ℃ ) |
1.0-1.2 |
|
Refractive Index |
1.4585 |
|
Coefficient of Thermal Expansion |
5.5*10 -7cm/cm.℃ |
|
Hot - working Temperature |
1750~2050℃- |
|
Short - term Service Temperature |
1450℃ |
|
Long - term Service Temperature |
1100℃ |
Advantages of Quartz Tubes
High Thermal Stability
Quartz tubes can withstand high temperatures without deformation or softening, making them suitable for high-temperature applications in laboratory tube furnaces.
01
Chemical Resistance
Quartz is highly resistant to chemical attack, making it ideal for use with a wide range of reactive gases and chemicals commonly used in heat treatment processes.
02
Optical Clarity
Quartz tubes are transparent to visible and ultraviolet light, allowing for easy observation of the sample during heating.
03
Low Thermal Expansion
Quartz has a low coefficient of thermal expansion, which helps minimize thermal stress and cracking during rapid heating and cooling cycles.
04
Uniform Heating
Quartz tubes provide uniform heating of the sample due to their excellent thermal conductivity, ensuring consistent results across the entire sample.
05
Applications of Quartz Tubes
Laboratory Instruments and Equipment
Quartz glass tubes are used in laboratories as chemical reagent bottles, reactors, and in industrial environments as boiler level gauges.
Optical Devices
Quartz glass tubes have high transparency and are commonly used in the manufacturing of laser devices, optical lenses, etc.
Semiconductor Industry
They play an important role in the production of reaction chambers, chemical vapor deposition (CVD) pipelines, and other processes in the semiconductor industry.
Chemical Industry
Used in the manufacturing of chemical reactors, distillation columns, condenser tubes, etc., playing a role in various chemical processes.
Fiber Optics Communication
An important component of fiber optics communication systems, used in the manufacturing of optical fibers and fiber optic connectors to ensure the transmission quality of optical signals.
Testing the reliability and quality standards of quartz tubes
International Standards (e.g., ISO, ASTM)
Quartz tubes should comply with ISO 9001 for quality management and ASTM C100 for dimensional and purity requirements. These standards ensure consistent manufacturing and traceability.
Common Testing Methods: Thermal Shock, Purity Analysis, and More
Thermal shock tests expose tubes to rapid temperature changes to check for cracking. Purity is analyzed using ICP-OES or GDMS. Dimensional checks use calipers or coordinate measuring machines (CMM).
Certification and Supplier Audits for Reliability
Request certificates of analysis and audit supplier facilities for process control. Reliable suppliers provide full documentation, batch traceability, and support for custom testing if needed.
Maintenance Tips for Quartz Tubes
Cleaning: Clean quartz tubes regularly to remove residues, deposits, and contaminants that can affect their performance. Use mild cleaning agents and avoid abrasive materials that could scratch or damage the quartz surface.
Avoid Thermal Shock: Gradually heat and cool quartz tubes to avoid thermal shock, which can cause cracking. Use controlled heating and cooling rates to minimize stress on the tubes.
Handle with Care: Handle quartz tubes carefully to prevent mechanical damage. Avoid dropping or impacting the tubes, especially at elevated temperatures.
Inspect for Damage: Periodically inspect quartz tubes for signs of wear, damage, or thermal stress. Replace any damaged tubes promptly to maintain performance and safety.
Storage: Store quartz tubes in a clean, dry environment to prevent contamination and moisture absorption. Use protective packaging or racks to avoid physical damage during storage.
Our factory
The company covers an area of 7,500 square meters with a building area of 9,000 square meters. It has more than 100 employees. The production machines for the cold and hot processing of quartz glass are precise and complete. The processes are mature and stable. The processing technology and product quality have reached a medium to high level in the industry.
FAQ
As one of the leading quartz tubes manufacturers and suppliers in China, we warmly welcome you to wholesale bulk quartz tubes for sale here from our factory. Also, customized service is available.
Quartz Protective Tube, Quartz Stirring Tube, Sealed Bottom Tube