High Temperature Resistant Quartz Glass Tube — Thick-Walled, Transparent, Corrosion-Resistant
Quartz glass tubes are essential in modern high-performance systems where extreme thermal stability, chemical resistance, and optical transparency are required. This product features high-purity fused quartz formed into thick-walled, transparent tubes designed for demanding industrial, scientific, and laboratory applications.
Unlike standard glass materials, fused quartz exhibits a unique combination of properties—excellent thermal stability, low thermal expansion, superior corrosion resistance, and high optical clarity—making it suitable for use in aggressive chemical environments and high-temperature systems.
These quartz tubes are fabricated using advanced electric fusion techniques and precision-forming processes to ensure exceptional quality, uniform wall thickness, and tight dimensional tolerances. They can be further customized for a wide range of application-specific needs.
Applications
The high-temperature and corrosion-resistant quartz glass tube is highly versatile and widely used across many industries and research sectors:
1. Semiconductor Manufacturing
- Quartz reactor tubes for LPCVD/PECVD systems
- Wafer processing tubes
- Cleanroom heating elements and thermocouple protection tubes
2. High-Temperature Furnaces
- Heating element enclosures
- Radiation shielding tubes
- Observation and control ports for vacuum and atmosphere furnaces
3. Chemical and Petrochemical Industry
- Fluid transport in corrosive environments
- Sight tubes for process monitoring
- Reactor liner sleeves
4. UV and IR Optical Applications
- Lamp housings for UV curing and disinfection
- IR-transmitting windows and sensor sleeves
5. Laboratory and Analytical Instruments
- Thermogravimetric analysis (TGA) crucibles
- Gas sampling and diffusion experiments
- Custom reaction vessels
6. Solar and Energy Systems
- Concentrated solar power (CSP) receiver tubes
- Encapsulation of high-power light sources
Key Features
High Thermal Resistance
- Operates continuously at temperatures up to 1100°C
- Momentary peak tolerance up to 1250°C
- Exceptionally low thermal expansion coefficient: ~0.55 × 10⁻⁶/K
- Superior resistance to thermal shock and rapid heating/cooling cycles
Chemical and Corrosion Resistance
- Inert to most acids, bases, and organic solvents
- Withstands exposure to hydrochloric acid, nitric acid, sulfuric acid, and many halogens
- Long lifespan in highly corrosive processing environments
High Optical Transparency
- Excellent transmission in UV (200 nm) to infrared (3,500 nm) range
- Suitable for optical sensing, spectroscopy, and UV lamp enclosures
- Low optical distortion in cylindrical form
Thick-Walled Structural Strength
- Wall thickness up to 10 mm or more
- High mechanical integrity under pressure or vacuum
- Enhanced durability for high-vibration and high-stress environments
Customization and Machining Options
- Custom inner/outer diameters, wall thicknesses, and lengths
- Surface finishes: flame-polished, ground, or optical polish
- Available with sealing, flaring, flanges, threading, drilling, and notches
- Cleanroom packaging and degassing services available
Specifications
| Property | Value / Range |
| Material | Fused Quartz (≥99.99% SiO₂) |
| Available Inner Diameters | 2 mm – 300 mm (customizable) |
| Wall Thickness | 1 mm – 10+ mm (standard and heavy-wall options) |
| Length Range | Up to 2,000 mm or per specification |
| Working Temperature | Continuous: up to 1100°C; Short-term: 1250°C |
| Softening Point | ~1730°C |
| Thermal Expansion Coefficient | ~0.55 × 10⁻⁶ /K |
| Transmission Range | 200 nm – 3,500 nm |
| Optical Transmission (600 nm) | >92% |
| Density | ~2.2 g/cm³ |
| Hardness (Mohs) | 5.5 – 6.5 |
| Knoop Hardness | ~610 kg/mm² |
| Electrical Resistivity | ~10⁷ – 10¹⁴ Ω·cm (depending on temperature) |
| Packaging | Cleanroom-sealed or industrial carton |
| Certifications | RoHS, REACH, ISO9001 |
Q&A
Q1: What is the difference between thick-walled and standard quartz tubes?
Thick-walled quartz tubes offer increased mechanical strength, pressure resistance, and durability in high-stress environments. They are ideal for vacuum systems, pressurized reactors, and high-temperature lamp housings.
Q2: Is the quartz tube suitable for direct flame or plasma exposure?
Yes, our fused quartz tubes can tolerate open flame and high-temperature plasma exposure, provided temperature ramping is controlled. They are commonly used in torch systems, flame reactors, and induction heating environments.
Q3: Can these tubes be customized for laboratory glassware or vacuum feedthroughs?
Absolutely. We offer CNC machining, precision cutting, flaring, grinding, and drilling for custom assemblies including feedthroughs, condenser jackets, and diffusion tubes.
Q4: How does the optical quality compare to other materials like borosilicate or sapphire?
Fused quartz offers superior UV and IR transmission over borosilicate, along with better thermal and chemical resistance. While sapphire provides even higher strength and hardness, quartz is more cost-effective and easier to fabricate.
Q5: What are the cleaning and maintenance requirements?
Quartz tubes should be cleaned with dilute acids or pure solvents. Avoid using abrasives. Rinse with deionized water and dry in a dust-free environment. For high-purity applications, cleanroom handling and degassing can be requested.
Q6: What is the typical lead time for custom orders?
- Standard sizes: 3–7 working days
- Custom specifications: 2–4 weeks depending on complexity and volume
- Rush orders and prototyping services are available.
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