As a leader in high-performance quartz materials, FGQuartz’s High-Purity Quartz Glass Tube stands out as a cornerstone component for precision industries worldwide. Renowned for its ultra-low metallic contamination, excellent thermal stability, and long-term reliability, FGQuartz quartz tubes are engineered to meet the strict requirements of modern semiconductor, optical, and high-temperature applications.
In this comprehensive guide, we explore the core advantages of FGQuartz’s high-purity quartz glass tubes, their applications, verified technical specifications, machining best practices, and guidance for selecting the right solution for your process.
What Is FGQuartz High-Purity Quartz Glass Tube?
FGQuartz’s High-Purity Quartz Glass Tube is a cylindrical hollow component manufactured from ultra-pure fused quartz (fused silica) with a SiO₂ content ≥99.99%. Through strict raw-material selection and controlled melting, forming, and annealing processes, total metallic impurities are limited to <20 ppm, with hydroxyl (OH) content <10 ppm, ensuring excellent thermal and chemical performance.
Unlike ordinary quartz or industrial glass tubing, FGQuartz quartz tubes are specifically engineered to minimize contamination risks from trace metal ions (such as Na, K, Fe, Al) and volatile species—critical for contamination-sensitive environments like semiconductor fabrication, optical systems, and high-temperature furnaces.
Throughout production, FGQuartz applies comprehensive quality control procedures, from incoming material inspection to dimensional verification and final cleaning. The result is a quartz tube that retains all intrinsic advantages of fused quartz—high temperature resistance, optical clarity, chemical inertness, and electrical insulation—while delivering consistent purity and dimensional stability.
Core Properties of FGQuartz High-Purity Quartz Glass Tube
1. High Purity and Material Integrity
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SiO₂ purity: ≥99.99%
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Total metallic impurities: <20 ppm
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Hydroxyl (OH) content: <10 ppm
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Low particle release and excellent chemical cleanliness
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Suitable for contamination-sensitive processes such as semiconductor diffusion and optical applications
2. Excellent Thermal Stability
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Continuous operating temperature: up to 1100–1200°C
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Short-term maximum temperature: up to 1450–1500°C
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Low thermal expansion coefficient: ~0.55 × 10⁻⁶ /°C
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Outstanding resistance to thermal shock during rapid heating and cooling cycles
3. High Optical Transparency
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High transmittance from UV to infrared (approximately 200–2500 nm)
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Minimal absorption and scattering, suitable for optical, photonic, and UV-related applications
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Stable optical performance at elevated temperatures
4. Strong Chemical Inertness
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Resistant to most acids, alkalis, and organic solvents
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Exception: hydrofluoric acid (HF)
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Non-reactive with process gases, pharmaceuticals, and laboratory chemicals
5. Controlled Dimensions and Consistency
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Outer diameter range: φ5 – 500 mm
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Wall thickness: 1 – 20 mm
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Length: customizable according to application requirements
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Dimensional tolerance: ±0.2 mm (standard industrial grade)
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Uniform wall thickness and good straightness for stable long-term operation
6. Reliable Electrical Insulation
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Excellent dielectric properties, even at elevated temperatures
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Low dielectric loss, suitable for high-temperature insulation and electronic processing environments
Key Applications of FGQuartz High-Purity Quartz Glass Tube
1. Semiconductor Manufacturing
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Diffusion and oxidation furnace tubes
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CVD and thermal processing systems
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Wafer handling and high-temperature process environments
Low impurity levels help prevent wafer contamination and support stable, repeatable semiconductor processes.
2. Optics & Photonics
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UV and IR optical systems
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Lamp housings and protective sleeves
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Optical and photonic experimental setups
High transparency and thermal stability ensure consistent optical performance.
3. Medical & Pharmaceutical Equipment
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High-temperature reaction vessels and process tubes
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Sterilization systems and analytical instruments
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Clean chemical handling environments
Quartz’s chemical inertness supports purity-critical pharmaceutical processes.
4. Industrial Heating & Furnace Systems
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High-temperature furnace tubes
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Heating element protection sleeves
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Vacuum and controlled-atmosphere furnaces
Excellent thermal shock resistance ensures long service life.
5. Laboratory & Analytical Equipment
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Chemical reaction and analysis tubes
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Spectroscopy and thermal analysis systems
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Research and testing environments
Reliable material properties support accurate and repeatable experimental results.
6. Aerospace & Advanced Engineering
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High-temperature insulation components
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Optical and sensor housings
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Vacuum and extreme-environment applications
Quartz’s stability under temperature and vacuum makes it suitable for demanding conditions.
Machining & Customization Capabilities
FGQuartz offers custom fabrication and machining services to meet specialized requirements:
Available Processing
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Precision cutting and edge finishing
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Grinding and dimensional adjustment
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Polishing of inner and outer surfaces
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Custom geometries based on technical drawings
Machining Best Practices
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Use diamond tooling to minimize micro-cracks
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Apply controlled feed rates to reduce internal stress
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Use high-purity water during processing
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Final ultrasonic and high-purity cleaning recommended
How to Select the Right Quartz Glass Tube
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Confirm Purity Requirements
FGQuartz standard high-purity quartz meets most semiconductor, optical, and industrial needs. -
Define Dimensions
Specify OD, wall thickness, length, and tolerance requirements. -
Evaluate Thermal Conditions
Ensure operating temperatures align with quartz performance limits. -
Check Chemical Compatibility
Confirm resistance against your process chemicals. -
Consult FGQuartz Technical Support
Our engineering team provides application guidance and customization support.
FAQs
Q: What distinguishes FGQuartz quartz tubes from standard quartz tubing?
A: FGQuartz focuses on controlled impurity levels (<20 ppm metals, low OH), consistent dimensions, and stable thermal performance, supported by strict quality control.
Q: Are FGQuartz quartz tubes suitable for vacuum applications?
A: Yes. Fused quartz exhibits low outgassing and is widely used in vacuum furnaces and controlled-atmosphere systems.
Q: How should quartz tubes be stored?
A: Store in a clean, dry environment, protected from dust and mechanical damage. Clean handling practices help maintain surface quality.
Q: What is the typical lead time?
A: Lead time depends on size and quantity. Standard specifications are typically supplied faster than custom configurations.
Conclusion
FGQuartz’s High-Purity Quartz Glass Tube delivers reliable performance for high-temperature, optical, and contamination-sensitive applications. With controlled purity, excellent thermal stability, and consistent dimensions, it is a trusted solution across semiconductor manufacturing, industrial heating, laboratories, and advanced engineering fields.
Partnering with FGQuartz means gaining not only high-quality quartz products, but also professional technical support and customization capabilities built on years of manufacturing expertise.
For technical consultation or application support, please contact FGQuartz to discuss your specific requirements.
