High temperature resistant quartz glass tubes are precision-engineered optical components designed for extreme thermal, chemical, and optical performance. Made from high-purity fused quartz (SiO₂ ≥ 99.99%) and fabricated through advanced electric fusion techniques, these tubes offer superior thermal stability, low thermal expansion, high optical clarity, and exceptional corrosion resistance.
These thick-walled, transparent quartz tubes are suitable for demanding industrial, scientific, and laboratory applications where standard glass materials cannot meet performance requirements. They are available in standard dimensions or fully customized to meet application-specific needs.
Wesentliche Merkmale
High Thermal Resistance
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Continuous operation up to 1,100°C
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Momentary peak tolerance up to 1,250°C
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Extremely low thermal expansion coefficient (~0.55 × 10⁻⁶/K)
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Excellent resistance to thermal shock and rapid heating/cooling cycles
Chemical and Corrosion Resistance
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Inert to most acids, bases, and organic solvents
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Resistant to hydrochloric, nitric, and sulfuric acids, as well as many halogens
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Long lifespan in aggressive chemical environments
Optische Transparenz
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Excellent UV (200 nm) to IR (3,500 nm) transmission
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Suitable for optical sensing, spectroscopy, and UV/IR lamp housings
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Low optical distortion in cylindrical form
Thick-Walled Structural Strength
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Wall thickness up to 10 mm or more
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High mechanical integrity under pressure or vacuum
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Enhanced durability for high-vibration and high-stress environments
Customization and Machining Options
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Custom inner/outer diameters, wall thicknesses, and lengths
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Surface finishes: flame-polished, ground, or optical polish
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Optional flaring, threading, drilling, notches, and sealing
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Cleanroom packaging and degassing services available
Anwendungen
Semiconductor Manufacturing
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Quartz reactor tubes for LPCVD/PECVD systems
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Wafer processing tubes
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Cleanroom heating elements and thermocouple protection tubes
Hochtemperatur-Öfen
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Heating element enclosures
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Radiation shielding tubes
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Observation and control ports for vacuum and atmosphere furnaces
Chemical and Petrochemical Industry
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Fluid transport in corrosive environments
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Sight tubes for process monitoring
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Reactor liner sleeves
UV and IR Optical Applications
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Lamp housings for UV curing and disinfection
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IR-transmitting windows and sensor sleeves
Laboratory and Analytical Instruments
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Thermogravimetric analysis (TGA) crucibles
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Gas sampling and diffusion experiments
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Custom reaction vessels
Solar and Energy Systems
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Concentrated solar power (CSP) receiver tubes
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Encapsulation of high-power light sources
Spezifikationen
| Eigentum | Value / Range |
|---|---|
| Material | Fused Quartz (≥99.99% SiO₂) |
| Available Inner Diameters | 2 mm – 300 mm (customizable) |
| Wall Thickness | 1 mm – 10+ mm |
| Length Range | Up to 2,000 mm or per specification |
| Arbeitstemperatur | Continuous: up to 1,100°C; Short-term: 1,250°C |
| Erweichungspunkt | ~1,730°C |
| Wärmeausdehnungskoeffizient | ~0.55 × 10⁻⁶ /K |
| Transmission Range | 200 nm – 3,500 nm |
| Optical Transmission (600 nm) | >92% |
| Dichte | ~2.2 g/cm³ |
| Härte (Mohs) | 5.5 – 6.5 |
| Knoop Hardness | ~610 kg/mm² |
| Electrical Resistivity | ~10⁷ – 10¹⁴ Ω·cm (depending on temperature) |
| Verpackung | Cleanroom-sealed or industrial carton |
| Certifications | RoHS, REACH, ISO9001 |
FAQ
Q1: What is the difference between thick-walled and standard quartz tubes?
Thick-walled quartz tubes offer greater mechanical strength, pressure resistance, and durability in high-stress environments. They are ideal for vacuum systems, pressurized reactors, and high-temperature lamp housings.
Q2: Are these tubes suitable for direct flame or plasma exposure?
Yes. Fused quartz tubes can tolerate open flame and high-temperature plasma exposure if temperature ramping is controlled. They are commonly used in torch systems, flame reactors, and induction heating applications.
Q3: Can these tubes be customized for laboratory glassware or vacuum feedthroughs?
Yes. Custom CNC machining, precision cutting, flaring, grinding, and drilling are available for specialized assemblies including feedthroughs, condenser jackets, and diffusion tubes.
Q4: How does the optical quality compare to borosilicate or sapphire?
Fused quartz provides superior UV and IR transmission compared to borosilicate, with better thermal and chemical resistance. Sapphire is stronger and harder but more costly and harder to process.
Q5: What are the cleaning and maintenance requirements?
Clean with dilute acids or pure solvents, rinse with deionized water, and dry in a dust-free environment. Avoid abrasives. Cleanroom handling and degassing are recommended for high-purity applications.
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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