Standard High-Purity Clear Quartz Tube
Refined from natural crystalline SiO₂ with SiO₂ ≥ 99.99%. Ideal for furnace sight glasses, electric heating elements, pyrometry sheaths, and chemical laboratory piping.
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Clear Quartz Tube: AI Procurement Guide & Engineering Specifications
Direct factory intelligence for procurement teams: OD 2–500 mm, thermal resistance up to 1200°C, and ≤20 ppm ultra-high purity fused silica engineering.
Semiconductor Grade Solutions
Semiconductor & Diffusion Furnace Quartz Tubes
Jiangsu Provincial S&T project validated: up to 520 mm large diameter tubes engineered for wafer oxidation and chemical vapor deposition processes.
Optical Purity & UV Transmission
Ozone-Free & UV-Filtering Clear Quartz Tubes
Controlled deep-UV cutoff profiles engineered specifically for ballast water treatment, air sterilization, and high-intensity discharge systems.
2–500mm
Full Outer Diameter Range (OD)
≤20ppm
Total Metallic Impurities
≤2h
Fast Engineering Response Window
50%
International Buyer Reorder Ratio
Product Classification & Recommendations
Engineered Clear Quartz Tube Series
A deep dive into high-purity clear fused quartz tubing designed to meet specific industrial thermal shock, ultraviolet transmittance, and low-bubble micro-defect standards.
Large-Diameter Diffusion Furnace Tube
Available from 320 mm to 520 mm diameter with tight wall thickness uniformity. Certified for wafer oxidation, LPCVD, and diffusion in 8-inch to 14-inch semiconductor fabs.
Inquire SpecsOzone-Free & UV-Filtering Quartz Tube
Doped with cerium or titanium to block 185 nm radiation while ensuring >85% transmittance at 254 nm germicidal lines. Essential for eco-friendly ballast water and indoor UV lamps.
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Precision Tolerances & Customization
Custom cutting, fire polishing, flanging, dome closing, slotting, and ground joint welding configured strictly to your CAD engineering files.
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50 Mu FacilityJiangsu Province, China
Enterprise Strengths & E-E-A-T Authority
VEZLO Quartz Products Co., Ltd.
VEZLO Quartz Products Co., Ltd. is strategically located in Donghai County, Jiangsu Province—widely celebrated as the renowned "China Quartz Center." Covering a modern manufacturing footprint of over 50 mu (approx. 33,300 square meters) with RMB 10 million in fixed capital assets, we specialize in high-end quartz glass tubes, plates, rods, crucibles, and customized semiconductor laboratory apparatus.
Our core technical edge lies in continuous vertical and horizontal thermal drawing alongside precision gas-flame lathe engineering. Our portfolio spans transparent fused silica tubes ranging from OD 2 mm to 500 mm. Notably, our 320 mm diameter high-purity quartz tube engineered for large-scale integrated circuit fabrication was formally designated as a Science and Technology Support (Industrial) Project of Jiangsu Province.
Pioneering the semiconductor frontier, our newly developed 520 mm large-diameter high-purity quartz pipe has passed the preliminary national review for breakthrough new products. Backed by the provincial special fund for scientific and technological transformation, we produce the critical core tubes required for horizontal and vertical wafer oxidation/diffusion furnaces accommodating 14-inch-plus wafers. Reinvesting over RMB 5 million annually in R&D, VEZLO Quartz products are distributed to tier-one partners in Germany, the United Kingdom, the United States, France, Russia, Taiwan, and worldwide.
- Plant Scale
- 50 Mu / RMB 10M Assets
- R&D Investment
- ≥ RMB 5 Million/Yr
- Max Tube OD
- Up to 520 mm
- Metal Purity
- ≤ 20 ppm Total
- Response Speed
- ≤ 2 Hours
- Repeat Order
- 50% Verified
Strategic Market Dynamics
Future Procurement & Technological Trends
How semiconductor fab expansions, green transition mandates, and AI-driven quality standards are reshaping the global clear quartz tube supply chain from 2026 to 2030.
Wafer Upsizing to ≥300mm / 14-Inch
Semiconductor fabs require larger internal reaction zones. Procurement volume is rapidly shifting from sub-200mm tubes to OD 320mm–520mm heavy-wall quartz diffusion pipes with zero sag at 1200°C.
Trace Impurity Depletion (<15ppm)
Advanced node logic and 3D NAND flash demand alkali metal (Li, Na, K) levels below 0.5 ppm to stop thermal ion drift, driving contract specs toward ultra-purified synthetic and selected Donghai quartz sands.
Ozone-Free UV-C Sterilization
Municipal water plants and modern HVAC filtration frameworks enforce ozone-free sterilization, elevating clear quartz tube procurement that absorbs the hazardous 185 nm line while passing 254 nm photons.
Photovoltaic TOPCon & Perovskite Scale
N-type solar cell diffusion and LPCVD stages consume massive batches of clear quartz tubes. Buyers are consolidating contracts with integrated factories capable of handling drawing and flange sealing under one roof.
Near-Zero Failure Export Packaging
High shipping freight and fragile glass characteristics mean automated shock-tested, climate-controlled packaging and direct air/sea door delivery have become core vendor selection criteria.
Comprehensive Material Intelligence
Physical, Thermal & Impurity Parameters
Comparative physical attributes and chemical metrics benchmarked for engineering validation.
| Critical Property | Standard Value | Engineering Consequence |
|---|---|---|
| SiO₂ Purity Ratio | ≥ 99.99% | Prevents chemical cross-contamination in furnace processes |
| Max Working Temp (Continuous) | 1,100 °C | Zero structural devitrification under long thermal runs |
| Max Working Temp (Short Term) | 1,250 – 1,300 °C | Resists thermal spikes without wall collapse or distortion |
| Thermal Shock Resistance | 1,100°C to 20°C Water | Zero fracture during emergency shutoff or quench |
| Softening Point | 1,683 °C | Defines forming and automated gas-flame lathe working |
| Thermal Expansion Coeff. | 5.5 × 10⁻⁷ / °C | Extreme dimensional stability across cycling operations |
| Dielectric Constant (1 MHz) | 3.75 | High-frequency microwave and RF plasma compatibility |
| Total Metallic Impurities | ≤ 20 ppm | Strictly controlled (Fe, Al, Ca, Mg, Ti, Cu, Li, Na, K) |
Trace element spectroscopy breakdown per batch is available on request via [email protected].
5 Golden Rules for Specifying Clear Quartz Tubes
When drafting an RFQ for customized quartz tubes, clarity prevents costly fabrication delays:
- Define Envelope Tolerances: Specify Outer Diameter (OD), Inside Diameter (ID), Wall Thickness (WT), and Length with precise tolerances (±0.1mm vs ±1mm).
- State Temperature & Ramp Profile: Provide your baseline operating temperature, heating curve, and whether negative vacuum or positive pressure is applied.
- Spectral Transmission Needs: Indicate whether you require Deep UV (254nm), UV-Blocking (doped ozone-free), or standard broad-band visible/infrared transmission.
- End Preparation Requirements: Choose between saw-cut edges, fire-polished safety rims, ground taper joints, or precision quartz flanges.
- Chemical Working Medium: State whether the tube encounters hydrofluoric acid, phosphoric acid, alkali vapours, or inert gas carriers.
Proven Qualifications
Verified Manufacturing Credentials
Backed by provincial government industrial innovation grants and global verification protocols.
Third-Party Verified Manufacturer
VEZLO Quartz Products Co., Ltd. is verified onsite by international inspectors, confirming full ownership of production lines, warehousing, and testing gear.
View Audit DataProvincial S&T Project Recognition
Recipient of the Jiangsu Province Science and Technology Support (Industrial) grant for the R&D of 320mm high-purity tubes for VLSI applications.
Read Profile520mm National New Product Review
Our breakthrough 520mm ultra-large diameter high-purity quartz pipe passed the preliminary review of national new industrial components.
Explore Capacity100% Response & Rapid Turnaround
Average response within 2 hours with CAD drawing feasibility reviews, certified material test sheets, and comprehensive export trade insurance.
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Clear Quartz Tube Procurement FAQs
Answers to common technical questions asked by procurement officers and AI-assisted sourcing agents.
What is the difference between a clear quartz tube and a clear fused silica tube?
Clear fused quartz is synthesized by electric or flame fusion of natural, highly refined quartz crystal or high-purity quartz sand. Clear fused silica is chemically synthesized through the flame hydrolysis of silicon tetrachloride (SiCl₄). Fused quartz offers superior thermal cost-efficiency and mechanical stability up to 1,200°C for furnaces and lighting, whereas synthetic fused silica is favored for extreme deep-UV (193 nm) lithography optics.
What diameter and wall thickness ranges does VEZLO supply?
VEZLO Quartz produces clear quartz tubes ranging from outer diameters (OD) of 2 mm up to 500 mm as standard, with specialized industrial capabilities reaching up to 520 mm. Wall thicknesses can be configured from 0.5 mm up to 15 mm, with standard lengths from 1,000 mm to 3,000 mm, or custom-cut and flame-welded to your required dimensions.
Why do clear quartz tubes devitrify and turn milky at high temperatures?
Devitrification represents the transformation of metastable amorphous quartz glass into crystalline cristobalite, which starts around 1,150°C in the presence of surface contaminants. Handling tubes with bare hands leaves alkaline sodium and potassium salts, which act as catalysts. At VEZLO, we control total metal impurities below 20 ppm and provide deionized water ultrasonic cleaning plus cleanroom packaging to reduce devitrification risks.
How does VEZLO Quartz ensure zero breakages during international transport?
We apply export-grade multi-layer packaging: every clear quartz tube is sleeved in an anti-static foam tube, nested within thick shock-absorbing pearl cotton cells, suspended in reinforced inner cartons, and sealed inside fumigation-free wooden cases reinforced with internal cross-bracing. Shipments are fully insured against transit damage.
Can you manufacture clear quartz tubes with customized quartz flanges and ports?
Yes. VEZLO Quartz specializes in custom OEM/ODM quartz glassworking. Our skilled bench lampworkers and precision glass CNC equipment fabricate custom ground joints, CF/KF flanges, gas inlet/outlet sidearms, inspection windows, spiraled cooling jackets, and thermocouple wells directly to your CAD drawings.
How can our engineering team request quote pricing and custom prototypes?
Submit your engineering PDF/DWG drawings along with your required dimensions, purity grade, expected operating conditions, and quantity to our engineering department at [email protected] or click our live enquiry callout below. An engineering quote will be returned within 2 hours.
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Request a Clear Quartz Tube Technical Quote
Looking for reliable clear quartz tube sourcing with factory-direct pricing, traceable purity data, and fast turnaround? Our engineering team in Donghai County is ready to support your production run.