Quartz Tube
Quartz Plate
Quartz Rod
Optical Applications
Semiconductor Industry
Laboratory and Chemical Applications
Our quartz tubes with flanges on both ends are precision-engineered from high-purity fused silica, offering unparalleled performance for demanding industrial and laboratory applications. Designed to withstand extreme temperatures, highly corrosive chemicals, and provide excellent optical transparency, these tubes are ideal as reaction chambers, process conduits, or observation windows. The integrated flanges on both ends ensure secure, leak-tight connections within vacuum systems, furnaces, and complex piping. Full customization of dimensions, flange types, and features is available to meet your precise technical requirements.
Remarks：
- ayment method: By wire transfer or advance payment, depending on the quantity of the order.
- Delivery time: According to the order quantity.
- Transportation method: Sea freight or air freight, depending on the customer.
| Property Content | Property Values |
|---|---|
| SiO2 | 99.99% |
| Density | 2.2×10³ kg/cm³ |
| Hardness | 5.5 - 6.5 Mohs' Scale 570 KHN 100 |
| Tensile Strength | 4.8×10⁷ Pa (N/mm2) (7000 psi) |
| Compression Strength | >1.1×10⁹ Pa (160,000 psi) |
| Coefficient of Thermal Expansion | 5.5×10⁻⁷ cm/cm·°C (20°C-320°C) |
| Thermal Conductivity | 1.4 W/m·°C |
| Specific Heat | 670 J/kg·°C |
| Softening Point | 1730°C (3146°F) |
| Annealing Point | 1210°C (2210°F) |
| Strain Point | 1120°C (2048°F) |
| Work Temperature | 1200°C (2192°F) |
| Electrical Resistivity | 7×10⁷ ohm cm (350°C) |
| Size | Customized |
| Logo | Customized Logo Accept |
Unmatched High-Temperature & Chemical Resistance
Crafted from high-purity fused silica, they can operate continuously at extreme temperatures and exhibit superior inertness to nearly all acids and bases. This makes them indispensable for processes involving aggressive chemicals or very high heat.
Exceptional Sealing Integrity & System Integration
Featuring precision-engineered flanges on both ends, these quartz tubes enable highly secure, leak-tight connections essential for vacuum systems, pressure vessels, and gas-tight reactors, ensuring reliable integration into complex industrial and laboratory setups.
High Purity & Optical Transparency
The inherent purity of quartz prevents contamination of sensitive processes and samples. Additionally, its excellent optical transmittance across a broad spectral range allows for crucial visual monitoring or integration into optical systems, such as furnace observation windows or spectroscopic setups.
Robust Construction & Full Customization
Built with sturdy walls and durable flanges, these tubes are designed for longevity and resilience in demanding environments. We offer extensive customization for dimensions (diameter, length), flange types (e.g., ISO-KF, ConFlat, custom bolt patterns), and other specific features to perfectly match unique application requirements.
Application Scenario
High-Temperature Furnace Process Tubes
Used as reaction chambers or process conduits within high-temperature furnaces (e.g., diffusion furnaces, annealing ovens) in industries like semiconductor manufacturing, where precise temperature control and a sealed, contamination-free environment are critical for material processing.
Vacuum & Ultra-High Vacuum (UHV) Systems
Essential for building vacuum chambers, connecting components in UHV systems, or as sight glasses for observing processes under vacuum. The double flanges ensure a robust, leak-tight seal, crucial for maintaining low pressures or controlled gas atmospheres.
Chemical Vapor Deposition (CVD) Reactors
Employed as the main reaction tube in CVD systems for depositing thin films. The quartz material’s high purity and temperature resistance, combined with the secure flanged connections, allow for the precise handling of reactive gases at elevated temperatures.
Flow-Through Chemical Reactors & Analytical Sample Cells
Integrated into continuous flow chemical processes or as sample cells in advanced analytical instruments. The transparency of quartz allows for optical monitoring, while the double flanges enable easy and secure integration into complex piping systems or optical setups for corrosive liquid or gas analysis.
Handle with care
Quartz glass products are made from valuable materials and must be handled gently to avoid collisions and falls.
Regular maintenance
The maintenance of quartz tubes must be performed regularly to ensure their long-term stable performance. Regularly check the connections, fixings, and mechanical vibrations of the quartz tubes to prevent abnormalities. The exterior of the quartz tubes is prone to contamination from dust and moisture, so they should be cleaned regularly.
Storage environmen
When storing quartz tubes, care should be taken to avoid exposure to mechanical vibrations, shocks, and excessively high temperatures. They should be kept in a dry, cool, and well-ventilated place, avoiding direct sunlight and high-temperature environments.
Yes, we can manufacture the flanges on both ends to common industry standards, such as ISO-KF, ConFlat (CF), or other specific bolt patterns and dimensions as per your requirements. This ensures seamless and secure integration of our quartz tubes into existing vacuum systems, furnaces, or process lines using standard fittings and components.
Our quartz tubes with flanges on both ends are designed for robust performance under both vacuum and moderate pressure conditions. While actual ratings depend on the specific diameter, wall thickness, and flange type, they are generally suitable for high vacuum to ultra-high vacuum (UHV) applications, and can withstand internal pressures typically up to a few atmospheres. For specific high-pressure applications, we recommend consulting our technical team for custom design and rating.
Achieving a proper seal requires clean flange surfaces, appropriate gasketing (e.g., Viton O-rings for KF, copper gaskets for CF, or custom seals), and correct bolt torquing. For optimal alignment, it’s often best to secure one end first, then carefully align the second flange to its mating counterpart before gradually tightening bolts in a star pattern to ensure even pressure distribution and prevent stress on the quartz.
Laser Drilling of Quartz
Threaded Quartz Tube
External Thread on Quartz Tube
Internal Threaded Quartz Tube
Quartz Tube Slotted
Window on Quartz Tube
Angled Cut Quartz Tube
Quartz Tile
Quartz Tube with Window
Frequently asked questions
We specialize in the end-to-end manufacturing of high-purity quartz glass components. Our core product lines include:
Quartz Tubing & Rods: A wide range of diameters and specifications.
Quartz Plates & Discs: Precision-cut and polished for optical and industrial use.
Quartz Labware: A full suite of standard and custom glassware, including beakers, flasks, and boats.
Semiconductor-Grade Quartz: High-purity components like process tubes and carriers for semiconductor fabrication.
Custom Fabricated Components: We can produce complex parts tailored to your unique designs and specifications.
Yes. Custom fabrication is at the core of our business. With over a decade of specialized experience, we partner with companies to provide expert OEM/ODM services. Our capabilities include welding, grinding, drilling, polishing, bending, and other precision processing techniques to create components that meet your exact requirements.
Quality is paramount in our manufacturing process. We are an ISO 9001:2015 certified manufacturer, ensuring that our processes meet international quality management standards.Our products also undergo rigorous SGS testing for purity and performance. We use high-purity raw materials (up to 99.998% SiO2) to produce fused quartz and fused silica products with exceptional thermal stability, high-temperature resistance, and chemical inertness.
We've streamlined our process to be as efficient as possible:
Submit Your RFQ: Send us your technical drawings, specifications, and requirements via our website contact form or email.
Rapid Response: You can expect an initial response within minutes and detailed communication within half an hour.
Design & Proposal: We will deliver a detailed design proposal and a competitive quote within 24 hours.
Prototyping & Production: Upon approval, we move swiftly from prototyping to full-scale production to meet your deadlines.
Partnering with Aoxin Quartz offers several key advantages:
Proven Expertise: With 10+ years in the industry, we have the technical knowledge to tackle complex challenges.
One-Stop Solution: We manage the entire production process, from sourcing high-purity raw materials to fabricating and finishing complex components.
Competitive Value: Located in a major quartz production hub, we leverage an efficient supply chain and advanced manufacturing to offer exceptional quality at a competitive price point.
Dedicated Partnership: Over 90% of our clients become long-term partners. We are committed to your success through responsive service, reliable quality, and innovative solutions.
