Custom Quartz Tubes & Ampoules
Custom Quartz Tubes & Ampoules Manufacturing
We manufacture high-purity fused silica quartz tubes, ampoules, and custom-shaped components for research laboratories, semiconductor processing, optical systems, high-temperature furnaces, and chemical reaction applications. All components are built from 99.99% purity fused silica with excellent thermal shock resistance, chemical durability, and optical clarity.
Manufacturing Capabilities
- OD range: 2 mm – 200 mm
- ID tolerance: ±0.05 – 0.2 mm
- Length up to 2000 mm (2 meters)
- End types: fire-polished, flat sealed, rounded, point-sealed
- Custom ampoule shapes: tapered neck, bulbs, double-sealed ends
- Side holes, ports, branch tubes (1–20 mm)
- Thin-wall machining & precision polishing
- Flanges, joints, constrictions, vacuum-compatible sealing
Technical Specifications
| Material | 99.99% high-purity fused silica |
|---|---|
| OD Range | 2 mm – 200 mm |
| ID Range | Custom to specification |
| Wall Thickness | 0.5 – 10 mm |
| Max Length | 2000 mm |
| Temperature Rating | Up to 1200–1250 °C |
| Surface Finish | Standard, fire-polished, optical polish |
| Customization | Side holes, flanges, joints, sealing, CNC shaping |
Applications
- CVD / PECVD reactor tubes
- Semiconductor diffusion furnaces
- High-temperature heating systems
- Chemical reaction ampoules
- Optical & spectroscopy experiments
- Vacuum & plasma processing
Frequently Asked Questions (FAQ)
1. What types of quartz tubes and ampoules can you custom-manufacture?
We offer a wide range of custom quartz components, including:
• Straight tubes (open-ended or closed-end)
• Ampoules with point-sealed or flat-sealed ends
• Multi-neck tubes, side ports, joints
• Quartz reaction tubes for CVD / PECVD / diffusion furnaces
• Thin-wall optical tubes
• Custom shapes and high-temperature chambers
All parts are made from high-purity fused silica (99.99%).
2. What sizes are available?
We support:
• Outer Diameter (OD): 2 mm – 200 mm
• Length: up to 2000 mm (2 meters)
• Wall thickness: 0.5 – 10 mm+
For non-standard or large furnace tubes, custom fabrication is available.
3. What is the maximum working temperature?
High-purity fused silica can withstand:
• Continuous temperatures: 1100 – 1200 °C
• Short-term peak temperatures: ~1250 °C
For higher temperatures, we can offer specialized quartz or alumina tubes.
4. Do you support closed-end tubes or sealed ampoules?
Yes. Options include:
• Flat-sealed end
• Round-end (bulb)
• Point-seal for vacuum sealing
We can also fabricate double-sided closed tubes for specialized chemical processes.
5. Can the quartz tube include side ports, valves, or joints?
Yes. We can add:
• Side holes (laser or flame-drilled)
• Branch tubes
• Standard joints (24/40, 14/20, etc.)
• KF, CF, or custom flange connections
All connections are flame-sealed by experienced quartz workers.
6. What is the purity of the quartz?
Our fused silica is:
• 99.99% optical-grade purity
• Low OH content available (<10 ppm)
• UV-transparent and high-temperature stable
Suitable for optical experiments, high-temperature heating, and semiconductor processes.
7. Do you support vacuum sealing for chemical reactions or sample encapsulation?
Yes — we can fabricate ampoules specifically designed for:
• Vacuum sealing
• Inert gas sealing (Ar, N₂)
• High-temperature reaction studies
Many customers use these for crystal growth, material synthesis, or heat-treatment experiments.
8. What are the tolerances for quartz tubes?
Typical tolerances:
• OD/ID: ±0.05 – 0.2 mm (depends on size)
• Length: ±1–2 mm
Precision-polished or CNC-machined ends can be provided upon request.
9. Can you polish the ends or machine special shapes?
Yes. Available options:
• Fire-polished ends
• Optical-grade surface polishing
• Grinding tapered ends
• Quartz-to-metal sealing support
Custom CNC shaping is available for complex geometries.
10. What is the typical lead time?
Standard lead times:
• Small or simple tubes: 3–7 days
• Large or complex builds: 1–3 weeks
Rush orders may be possible depending on workload.
11. How do I request a quote?
Click the “Request Quote” button and include:
• OD, ID, and length
• Closed-end or open-end
• Any ports, joints, or machining
• Temperature and application
• Drawings (PDF/DXF) if available
Our engineer will review and respond within 24 hours.