VEZLOQuartz Products

VEZLO Quartz Products Co., Ltd.Fused Quartz & Quartz Glass Manufacturer · Donghai, China

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Clear Quartz Tube Manufacturer & Factories in Uppsala

OEM/ODM Direct Sourcing for Uppsala's Biotechnology, Ångström Semiconductor Cleanrooms & Analytical Sensor Laboratories

Precision Engineered Solutions

Featured Clear Quartz Components & Fabrications

Factory-direct fused silica solutions engineered to rigid dimensional tolerances, optical clarities, and extreme thermal resilience for advanced R&D and serial manufacturing in Uppsala County.

Semiconductor Quartz Plate Fused Silica Substrate High Purity Custom

Semiconductor Quartz Plate Fused Silica Substrate

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Quartz Plate for Laboratory Fused Silica Clear Heat Resistant Custom

Laboratory Fused Silica Clear Heat Resistant Plate

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Rectangular Quartz Plate Fused Silica Clear Precision Cut Custom Size

Rectangular Quartz Plate Precision Cut Custom Size

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CNC Machined Quartz Plate Fused Silica Complex Shape Custom Size

CNC Machined Quartz Plate Complex Shape

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Laser Cut Quartz Glass Plate Fused Silica Precision Custom Size

Laser Cut Quartz Glass Plate Precision Custom Size

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Quartz Disc with Groove Fused Silica Plate Clear Polished Custom Size

Quartz Disc with Groove Clear Polished Disc

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Quartz Substrate Plate for Semiconductor Fused Silica Clear Polished

Quartz Substrate Plate for Semiconductor Polished

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Round Quartz Plate Disc Fused Silica Clear Polished Custom Diameter

Round Quartz Plate Disc Clear Polished Custom

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2–500 mm
Outer Diameter Formats
≤ 20 ppm
Total Metallic Impurities
1100 °C
Continuous Working Temp
≤ 2 Hours
Technical Drawing SLA
50 %
Verified Reorder Rate
Strategic Sourcing Whitepaper

High-Purity Quartz Metallurgy for Uppsala's Precision Ecosystem

Uppsala occupies an elite position within Scandinavia's knowledge economy. Driven by institutions like the Ångström Laboratory at Uppsala University, the Uppsala Science Park, and Sweden's world-leading bioprocessing clusters, engineering demands for inorganic vitreous materials far exceed typical industrial glass standards. For project directors, procurement specialists, and cleanroom lab managers across Uppsala, procuring high-performance clear quartz tubes requires strict verification of raw material provenance, crystalline phase purity, hydroxyl (OH) radical density, and dimensional repeatability.

VEZLO Quartz operates as a primary manufacturer and global fabricator, providing research laboratories and industrial facilities in Uppsala with seamless factory-direct access to ultra-pure fused quartz products. By controlling the complete transformation cycle from raw silica beneficiation to continuous electrical fusion and sub-millimeter glass lathe machining, our supply model bypasses multiple layers of Nordic brokerage markups. The result is uncompromised metallurgical traceability compliant with EU REACH, RoHS, and ISO 9001 standards delivered directly to your dock door in Uppsala.

Thermodynamic & Optical Benchmarks

Material Specifications & Engineering Constants

Every clear quartz tube fabricated for delivery to Sweden undergoes standardized spectrochemical analysis. Below are the verified operational parameters governing our semiconductor and laboratory-grade transparent fused silica tubes.

Physical / Chemical Parameter Certified Value Test Standard / Condition Engineering Relevance for Uppsala Applications
SiO2 Purity ≥ 99.99% (Electronic Grade ≤ 99.998%) ICP-OES / GD-MS Analysis Mitigates ionic contamination in semiconductor diffusion & biopharma catalysts.
Coefficient of Thermal Expansion (CTE) 5.5 × 10-7 cm/cm·°C 20°C to 320°C Dilatometry Near-zero thermal expansion prevents catastrophic failure under rapid thermal cycles.
Continuous Maximum Service Temperature 1100 °C Atmospheric Furnace Continuous Essential for LPCVD, oxidation furnaces, and high-temp tube reactors.
Softening Point 1683 °C ASTM C338 Standard Guarantees dimensional stability without sagging during high-temp processing.
Annealing Point 1215 °C ASTM C336 Standard Relieves all internal mechanical stresses generated during hot-forming & cutting.
Refractive Index (nD) 1.4585 λ = 589.3 nm (Sodium D line) Provides high optical coherence for UV spectroscopy and laser vision flow cells.
Spectral Transmission (UV to Near-IR) > 90% (from 220 nm to 2500 nm) Spectrophotometer T% (10 mm path) Maximized photon efficiency for UV germicidal disinfection and photochemistry.
Dielectric Strength 25–40 kV/mm 20 °C, 1 MHz Frequency Provides total dielectric breakdown protection in RF plasma chambers and sensors.
Industrial Synergy

Localized Application Scenarios Across Uppsala Industries

Clear quartz tubing serves as a core enabling component across four pivotal sectors driving the greater Uppsala regional economy.

Bioprocess Chromatography & Flow Cells

Uppsala is universally recognized as the global cradle of liquid chromatography and protein purification. Our clear quartz tubes with precision inner bore grinding (±0.01 mm) serve as pressure-resistant columns, optical sight tubes, and preparative HPLC detection cells. High chemical inertness prevents protein adsorption, while absolute chemical neutrality against aggressive sanitization cycles (e.g., 1M NaOH, hot organic solvents) ensures stable biomanufacturing workflows.

Semiconductor & Nanotech Cleanrooms

Within cleanroom environments such as the Ångström Microstructure Laboratory, our high-purity quartz furnace tubes (OD 100 mm to 520 mm) provide the required thermal envelope for silicon wafer oxidation, planar diffusion, and Low-Pressure Chemical Vapor Deposition (LPCVD). Low total alkali impurities (Na, K, Li ≤ 1.5 ppm) prevent junction breakdown and gate oxide degradation in sub-micron semiconductor structures.

UV Sterilization & Advanced Photolysis

For municipal water infrastructure around Lake Mälaren, Fyrisån research monitoring, and biotech water-for-injection (WFI) loops, clear quartz sleeves must transmit germicidal ultraviolet radiation at 254 nm with zero solarization degradation. We offer both synthetic fused silica and ozone-free quartz tubes doped with cerium or titanium to block short-wavelength 185 nm radiation, preventing ozone creation where undesirable.

Analytical Spectroscopy & Pyrolysis Tubes

Analytical chemists in environmental and forensic testing across Uppsala County rely on our clear fused quartz tubes for combustion analyzers, ICP torches, microwave digestion sleeves, and infrared radiant heater shields. The material's thermal shock resilience allows cold samples to be instantly injected into +1000 °C digestion zones without risk of acoustic shatter or micro-cracking.

Specialty Lighting, Solar Simulation & Pyrometry

Uppsala materials science teams deploy quartz glass jackets as envelopes for short-arc xenon lamps, high-power halogen infrared heaters, and vacuum viewports. Our optical finishing guarantees parallel transmission with minimal wavefront distortion, making them suitable for non-contact infrared pyrometer sight glasses and laser cavity flow pipes.

Enterprise Manufacturing Engine

Direct Factory Advantages: The VEZLO Manufacturing Footprint

Sourcing quartz components from VEZLO Quartz connects Uppsala engineering programs directly to China's premier silica basin in Donghai County, Jiangsu Province. Our industrial capabilities provide buyers with structural advantages that conventional distributors cannot replicate.

Integrated Metallurgy: From Ore Beneficiation to Final Lathe

VEZLO Quartz operates an advanced 50-mu (≈33,000 m²) production base backed by over RMB 10 million in fixed capital assets. Unlike secondary fabricators who purchase pre-drawn stock from third-party suppliers, we operate continuous electric and gas fusion drawing towers. We refine our own high-purity quartz sand across 13 proprietary grades, yielding raw materials with total conventional metallic impurities ≤ 20 ppm.

This mineral-level control directly prevents common quartz fabrication defects: micro-bubble chains, airlines, inclusions, and premature high-temperature devitrification (cristobalite crystal growth). Our heavy R&D commitment—exceeding RMB 5 million annually—underpins milestones such as the Jiangsu Provincial Science & Technology Support Project (320 mm furnace tubes) and our breakthrough 520 mm large-diameter high-purity quartz tubes for next-generation semiconductor oxidation and diffusion chambers.

VEZLO Quartz manufacturing facility workshop and clean production base

Dimensional Range (OD 2–500 mm)

From thin capillary tubing (OD 2 mm) to massive industrial reaction furnace liners (up to 520 mm), our dimensional capability accommodates virtually any thermal or structural footprint.

Flame-Working & Hot Machining

Equipped with computerized glassblowing lathes, our technicians execute domed closures, flared ends, standard ground taper joints (NS/ST), KF/ISO vacuum flanges, and multi-port furnace manifolds.

Export Packaging & Verification

Every shipment bound for Stockholm-Arlanda (ARN) and Uppsala is packed with custom-molded high-density EPE foam inside fumigation-free wooden crates, backed by Alibaba Onsite-Verification and Trade Assurance.

Procurement Clarity

Uppsala Buyer FAQ: Technical & Supply Chain Questions

Common inquiries from engineering leads, lab procurers, and technical buyers across the Uppsala-Stockholm high-technology corridor.

How do you ensure safe freight delivery for fragile quartz tubes to Uppsala?
Quartz tube integrity is heavily dependent on export packaging engineering. Each clear quartz tube is individually encased in static-dissipative polyethylene sleeves, suspended in high-density customized Expanded Polyethylene (EPE) pearl foam cradles, and housed in heavy-duty multi-ply corrugated sleeves or reinforced, fumigation-free engineered plywood crates. For shipments routed via air freight to Stockholm-Arlanda Airport (ARN) or ocean freight to Gothenburg/Stockholm ports, shock-indicator sensors (ShockWatch) and tilt monitors can be affixed upon request. Our breakage loss rate to Nordic destinations remains below 0.15% across verified consignments.
What is the key technical difference between Fused Quartz and Synthetic Fused Silica?
Fused quartz is produced by thermal melting of naturally occurring, ultra-high-purity crystalline quartz sand (SiO2 ≥ 99.99%). It features exceptional thermal shock resistance, an elevated annealing point (1215 °C), and superior mechanical stability at an economical cost—ideal for furnace tubes, diffusion liners, UV sleeve protection, and labware. Synthetic fused silica is created via the gas-phase chemical synthesis of silicon tetrachloride (SiCl4), resulting in near-zero trace metallic impurities and superior transmission into the deep ultraviolet spectrum (DUV 185 nm to 220 nm), which is favored in precision stepper optics and laser beam splitters.
Can VEZLO manufacture customized quartzware directly from STEP/CAD files?
Yes. Our internal engineering department works directly with standard 2D and 3D industrial formats, including SolidWorks, STEP (.stp), IGES (.igs), and AutoCAD (.dwg/.dxf). We regularly construct custom process tubes featuring integrated quartz thermocouple wells, welded ground joints (e.g., standard taper 14/23, 29/32, 45/50), flat O-ring flanges, optical window ports, and laser-machined micro-holes with dimensional tolerances held to ±0.05 mm.
What lead times should research and manufacturing facilities in Uppsala anticipate?
Standard diameter transparent quartz tubes (OD 10 mm to 150 mm) are regularly kept in raw tube stock, allowing cut-to-length and fire-polished orders to dispatch within 3–7 business days. Complex flame-worked fabrications (custom flanges, manifolds, carrier boats) typically require 10–15 business days for fabrication and stress annealing. Transit via express air courier (DHL Express / FedEx Priority) directly into Uppsala takes 4–6 business days from export customs clearance. Sea freight to Swedish ports requires approximately 30–35 calendar days for consolidated container orders.
How is hydroxyl (OH-) content managed, and why does it matter for spectroscopic applications?
Hydroxyl (OH-) radicals are chemically bound into the vitreous silica network during electrical or flame fusion. Standard electrically fused clear quartz contains low OH- levels (< 20–30 ppm), preventing thermal sagging at high temperatures and avoiding absorption bands in the infrared spectrum (particularly at 2.73 μm). Flame-fused or synthetic varieties may have higher OH- levels (150–1000 ppm), which shift the transmission window further into the UV range while lowering the maximum continuous operating temperature by approximately 100 °C. We specify and document the exact OH- grade to meet your spectroscopic or furnace temperature requirements.
Are VEZLO Quartz shipments compliant with Swedish and EU chemical import regulations?
Yes. All fused quartz products exported to Sweden comply fully with Regulation (EC) No 1907/2006 (REACH) and Directive 2011/65/EU (RoHS). Vitreous quartz (SiO2, CAS No. 60676-86-0) is an inorganic polymer glass exempt from registration under Annex V of REACH when not modified with hazardous dopants. We provide full Material Declarations, Certificate of Conformance (CoC), and batch-level Glow Discharge Mass Spectrometry (GD-MS) purity certificates with your delivery documents.
Engineering Guidance

5-Step Technical Checklist for Quartz Tube Specifications

To ensure accurate cost quotation and engineering review within our 2-hour SLA, please include the following parameters in your technical requisition:

1. Geometry & Tolerances

Outer Diameter (OD), Inner Diameter (ID) or Wall Thickness (WT), total length (L), and acceptable dimensional deviations (e.g., ±0.1 mm vs. standard DIN ISO 2768-m).

2. End Face Execution

Specify raw diamond cut, ground flat, fire-polished, flat closed, hemispherical closed, flared, or fitted with ground taper joints and standard flanges.

3. Optical & Purity Class

Commercial clear grade, low-OH semiconductor grade, ozone-free UV-blocking (titanium-doped), or synthetic deep-UV transparent fused silica.

4. Thermal Profile & Media

Continuous and peak working temperatures, ramp rates (°C/min), vacuum level (mbar) or internal pressure, and chemical atmosphere (acid vapor, plasma, fluorine exposure).

5. Batch Volume & Traceability

Prototype R&D quantities (1–10 pcs) versus volume serial production (1,000+ pcs), along with specific QA/QC reporting and labeling requirements.

Connect Directly with VEZLO Quartz Application Engineers

Whether you are developing prototype chromatography reactors at Uppsala Science Park or maintaining high-throughput furnace lines, our engineers evaluate technical drawings and provide feasibility feedback within 2 hours.