Quartz Tube
Quartz Plate
Quartz Rod
Optical Applications
Semiconductor Industry
Laboratory and Chemical Applications
Our high-purity threaded quartz tubes are precision-engineered from fused silica, offering exceptional performance for demanding industrial and laboratory applications. The external screw threads provide a robust, reliable, and leak-tight mechanical connection, essential for high-pressure or vacuum systems. These tubes boast superior resistance to extreme temperatures, corrosive chemicals, and thermal shock, ensuring non-contamination and longevity. Ideal for furnace applications, fluid transfer, or as protective casings, they are available in various standard thread types and sizes, with full customization options to meet your exact specifications.
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 & Chemical Resistance
Made from high-purity quartz, these tubes withstand extreme temperatures (far beyond conventional glass) and exhibit superior inertness to most acids and alkalis, making them ideal for aggressive chemical processes and high-heat environments.
Superior Purity & Non-Contaminating Performance
The inherent high purity of fused silica (SiO2 ≥ 99.99%) ensures that these threaded tubes do not leach impurities, which is critical for maintaining sample integrity in ultra-pure applications like semiconductor manufacturing or sensitive analytical chemistry.
Robust & Secure Mechanical Connection
The precision-machined external screw threads provide a strong, reliable, and mechanically sealed connection to other threaded components or fittings, ensuring stability and preventing leaks even in demanding setups.
Ideal for Vacuum & Pressure Systems
The combination of strong threaded ends and quartz’s intrinsic strength allows these tubes to maintain integrity under high vacuum or moderate pressure conditions, providing a robust solution for gas delivery, processing, and sealed reactor systems.
Application Scenario
High-Temperature Furnace Tubes & Reactors
Ideal for use as reaction tubes or process tubes within high-temperature furnaces, where the external threads allow for secure, sealed connections to gas inlets/outlets, flanges, or end caps, enabling controlled atmosphere or vacuum processes.
Vacuum & Pressure System Components
Essential for constructing leak-tight vacuum lines, gas delivery systems, or moderate-pressure reactors. The robust threaded connections provide superior sealing integrity compared to ground joints or rubber stoppers, critical for maintaining specific environmental conditions.
Corrosive Fluid Transfer & Instrumentation
Employed in systems designed for handling highly corrosive liquids or gases, where the chemical inertness of quartz ensures the integrity of the fluid path, and the threads provide a durable, non-reactive connection point for pumps, valves, or sensors.
UV Lamp Envelopes & Optical Systems
Utilized as protective outer tubes for UV lamps or as components in specialized optical systems. The threaded ends allow for secure mounting and sealing, while the high UV transparency of quartz ensures efficient light transmission for applications like water purification, sterilization, or photocatalysis.
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.
These quartz tubes are typically manufactured with standard external screw thread specifications (e.g., GL, NPT, or custom metric/imperial threads) to ensure compatibility. This allows them to be securely connected to a wide range of standard threaded fittings, nuts, or custom-machined caps made from materials like PTFE, stainless steel, or specialized plastics, often with the aid of an O-ring or gasket for a hermetic seal.
While quartz is inherently a strong and durable material with excellent thermal shock resistance, the threads are precision-machined features. They are designed for robust mechanical connections, but like all glass components, they require careful handling to prevent chipping or damage, especially during assembly or disassembly. Proper torque and the use of appropriate sealing materials (like soft gaskets) are recommended.
Yes, the threaded design significantly enhances the sealing capability compared to unthreaded tubes or ground joints, making them highly suitable for both high-vacuum and moderate-pressure applications. The mechanical lock provided by the threads, combined with suitable gaskets or O-rings, allows for a more reliable and secure seal under such demanding conditions. For very high pressures, specific wall thickness and design considerations would be needed.
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.
