Product Overview
Quartz spiral tube is manufactured from high-purity fused silica (SiO₂ ≥ 99.99%) and formed into a precision helical geometry. The spiral structure increases surface area, improves thermal efficiency, and optimizes fluid flow dynamics, while the fully transparent wall enables real-time visual monitoring of internal media flow, condensation, or reaction status. Designed for demanding high-temperature, chemical, and optical applications, it provides reliable thermal stability, exceptional corrosion resistance, and high light transmission in systems where heat exchange, fluid handling, and contamination control are critical.
This component is commonly referred to as fused silica spiral tubing, helical quartz glass tube, quartz coil tube, spiral quartz condenser tube, clear quartz helix tubing, and fused quartz spiral pipe.
Core Features at a Glance
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High Purity: SiO₂ ≥ 99.99%, minimal metallic impurities for contamination-sensitive processes
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Thermal Stability: Continuous operation at 1100°C; short-term exposure up to 1450°C
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Chemical Inertness: Resistant to most acids and alkalis (excluding hydrofluoric acid), with corrosion resistance approximately 150× that of stainless steel
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Optical Clarity: >93% visible light transmission; excellent UV and IR transmittance
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Precision Geometry: Customizable diameters, wall thicknesses, coil pitch, and end connections
Technical Specifications
The table below outlines the standard technical parameters and dimensional ranges for clear spiral quartz tubes. All values are based on verified industry manufacturing capabilities.
| Parameter | Specification / Range |
|---|---|
| Material | High-purity fused silica (SiO₂ ≥ 99.99%) |
| Outer Diameter (OD) | 2 mm – 400 mm (customizable to 800 mm for specialized applications) |
| Wall Thickness | 0.5 mm – 40 mm |
| Length | 10 mm – 4000 mm |
| Coil Pitch / Spiral Spacing | Customizable per application requirements |
| Density | 2.2 g/cm³ |
| Compressive Strength | >1100 MPa |
| Thermal Expansion Coefficient | 5.3–5.8 × 10⁻⁷ /°C |
| Continuous Operating Temperature | 1100°C |
| Short-Term Peak Temperature | 1450°C |
| Softening Point | ~1730°C |
| Visible Light Transmission | >93% |
| UV Transmission (typical) | 80–90% |
| Dimensional Tolerance | ±0.1 mm (standard); tighter tolerances available upon request |
| Surface Quality | 40/20 or better (scratch/dig) |
Applications & Use Cases
Clear spiral quartz tubes are deployed across a wide range of industries where thermal resilience, chemical purity, and optical transparency are essential.
Semiconductor Manufacturing
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Wafer processing and wet bench chemical delivery systems
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Chemical vapor deposition (CVD) reactors and diffusion furnaces
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Rapid thermal annealing and high-purity fluid transport
Laboratory & Scientific Research
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Spiral quartz condensers for distillation, reflux, and extraction
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High-temperature reaction vessels and analytical instrumentation
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UV sterilization and photochemical reactors
Industrial Heating & Heat Exchange
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Infrared heating systems and high-temperature fluid circulation
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Thermal processing equipment requiring efficient heat transfer
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Protective sleeves for thermocouples and sensors
Optical & Photonic Systems
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UV and IR light transmission applications
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Laser equipment and optical fiber component protection
Quality Assurance & Compliance
Our spiral quartz tubes are manufactured under stringent quality control protocols and are supported by third-party testing aligned with international standards. Recommended test standards applicable to quartz glass tubing include:
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ISO 3585 – Borosilicate glass and quartz glass chemical durability and thermal properties
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ASTM E438 – Standard specification for glasses in laboratory apparatus
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ISO 719 – Hydrolytic resistance of glass grains
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ASTM D543 – Chemical resistance testing for plastics and glass materials
Customization & Ordering Information
Clear spiral quartz tubes are fully customizable to meet specific engineering or application requirements. Parameters that can be tailored include:
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Outer diameter, inner diameter, and wall thickness
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Coil pitch and number of turns
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Overall length and end termination type (open, flanged, ground joint, etc.)
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Purity grade and hydroxyl (OH) content level
No minimum order quantity is required for standard configurations. Custom tooling and engineering support are available for non-standard designs.
