Our specialized quartz tubes are engineered for demanding vacuum sealing applications, offering unparalleled ultra-high purity (SiO₂ ≥99.99%) and exceptional resistance to high temperatures and corrosive environments. With guaranteed precision fit and high-quality customization, these fused silica tubes are ideal for semiconductor processing, advanced laboratory setups, and critical industrial vacuum systems requiring superior performance and reliability.

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 |
Exceptional High-Temperature Resistance
Engineered to withstand extreme thermal shock and continuous high-temperature environments. This makes our quartz tubes the ideal choice for high-temp furnaces, reactors, and critical vacuum applications.
Superior Chemical & Corrosion Resistance
Exhibits outstanding stability against a wide range of acids, bases, and corrosive gases. This ensures product durability and an extended service life even when exposed to aggressive chemical environments.
Ultra-High Purity (SiO₂ ≥99.99%)
Guarantees minimal contamination risk for highly sensitive applications, such as semiconductor processing and advanced scientific research, ensuring stable, reliable performance under stringent conditions.
Precision Fit & Flawless Construction
Manufactured via high-precision customization and expert glassblowing techniques to ensure airtight vacuum sealing. The flawless structure guarantees leak prevention, meeting the rigorous demands of high-vacuum (HV) and ultra-high vacuum (UHV) systems.
Application Scenario
Semiconductor Manufacturing
Crucial for various processes within the semiconductor industry, including Chemical Vapor Deposition (CVD), Physical Vapor Deposition (PVD), etching, and diffusion. Their ultra-high purity and resistance to high temperatures and corrosive gases make them ideal for reactor chambers, furnace tubes, and sealing components where contamination control is paramount.
High-Vacuum (HV) & Ultra-High Vacuum (UHV) Systems
Essential components in constructing and maintaining high and ultra-high vacuum environments. They are used in vacuum chambers, viewports, gas delivery lines, and experimental apparatus where maintaining extreme air-tightness and purity is critical for system integrity and performance.
Advanced Laboratory & Research Equipment
Indispensable in scientific research for applications requiring precise control, high temperatures, and chemical inertness under vacuum. This includes use in analytical instruments (e.g., spectroscopy), high-pressure reactors, plasma generation systems, and specialized distillation apparatus.
High-Temperature Industrial Furnaces & Specialty Lighting
Utilized in industrial furnaces, especially those operating at extreme temperatures for material processing, annealing, or heat treatment. Additionally, their high purity and thermal stability make them suitable for specialty lighting applications, such as high-intensity discharge (HID) lamps, UV lamps, and halogen lamps, where the tube material must withstand high internal pressures and temperatures.
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.
We offer extensive customization options to meet specific design and application requirements. This includes precise control over dimensions (outer diameter, inner diameter, length, wall thickness), specialized end finishes, various joint configurations for sealing, and specific geometric shapes. Our engineering team can work with your blueprints and specifications to ensure a precision-fit solution.
Our quartz tubes are engineered for exceptional high-temperature resistance, typically capable of continuous operation up to 1200°C (2012°F) and even higher for short durations, depending on the specific application and design. For pressure, they are designed to maintain integrity under high-vacuum (HV) and ultra-high vacuum (UHV) conditions, ensuring gas-tight sealing and structural stability in demanding environments.
The ultra-high purity of our quartz tubes is critical for applications where even trace contaminants can negatively impact performance or yield. It significantly reduces the risk of outgassing, chemical reactions, and material degradation, which is especially vital in semiconductor processing, advanced material science, and sensitive optical applications, ensuring consistent process quality and product longevity.
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.



























