Clear Fused Silica Transparent Quartz Tube Blank
Standard OD 2–500 mm with exceptional optical transmission. Optimized for local glassblowing workshops, bending, and flame welding.
Manufactured from ultra-pure silica raw stock (total metallic impurities ≤ 20 ppm) to withstand continuous temperatures up to 1,100 °C. Engineered for universities, biotechnology laboratories, and industrial cleanrooms across the Barcelona Metropolitan Area.
Standard OD 2–500 mm with exceptional optical transmission. Optimized for local glassblowing workshops, bending, and flame welding.
Micron-precision grooving for semiconductor wafer carriers, analytical electrophoresis, and microfluidic research devices.
5-axis CNC ultrasonic cold processing for bespoke reactor flanges, stepped substrates, and micro-machined aperture plates.
High-pressure thermal shock observation discs for petrochemical boilers, autoclave visual ports, and high-heat furnaces.
Ground and polished heavy-duty blocks designed for severe thermal environments, corrosive chemistry, and heavy-duty load plates.
Titanium-doped dielectric barrier quartz tubes engineered to block 185 nm while sustaining maximum 254 nm germicidal transmission.
High laser damage threshold, zero bubble/inclusion rate, designed for CF/KF vacuum chambers, SEMs, and synchrotron beamlines.
Double-sided parallel optical polishing, λ/4 surface flatness, bevelled safety edges for optical spectroscopy and chemical stages.
Fused Tube Outer Diameter
Total Metallic Impurities
Engineering RFQ Response
Global Buyer Reorder Rate
The greater Barcelona region—anchored by the Parc Científic de Barcelona (PCB), the ALBA Synchrotron facility in Cerdanyola del Vallès, and the vibrant pharmaceutical corridor stretching through Baix Llobregat and Vallès Occidental—stands as Southern Europe’s leading engine for biotechnology, nanotechnology, and advanced materials engineering. However, researchers, laboratory directors, and procurement managers across Catalonia routinely confront a severe supply chain bottleneck: European domestic catalog distributors rely on multiple tiers of intermediate brokers, creating inflated costs and protracted 8- to 16-week delivery cycles for customized quartz laboratory glassware.
As an integrated primary manufacturer headquartered in Donghai—the acknowledged world capital of high-purity natural silica—VEZLO provides Barcelona-based institutions with direct factory engineering integration. By circumventing intermediate trading houses, we deliver custom-machined fused quartz apparatus, semiconductor diffusion tubes, and spectroscopic viewports built precisely to CAD/DXF specifications at a fraction of standard European wholesale pricing, backed by full ISO/CE-grade traceable certification.
Unlike standard borosilicate 3.3 laboratory glass, which deforms at temperatures above 500 °C and risks stress fractures under extreme thermal cycling, pure fused quartz (amorphous silicon dioxide, SiO₂) provides an operating envelope capable of sustaining continuous service at 1,100 °C and short-term thermal excursions up to 1,300 °C. For the sophisticated catalytic reactors operated at the Institut Català d'Investigació Química (ICIQ) and the cleanroom micro-fabrication lines at the Institut Català de Nanociència i Nanotecnologia (ICN2), fused silica is an indispensable substrate due to its negligible coefficient of thermal expansion and near-total chemical inertness.
| Material Property | Typical Laboratory Value | Operational Significance for R&D |
|---|---|---|
| Chemical Purity (SiO₂) | ≥ 99.99% | Zero trace element leaching in trace element ICP-MS analysis. |
| Density (ρ) | 2.20 g/cm³ | Exceptional structural rigidity with lower mechanical deadweight. |
| Coefficient of Thermal Expansion (CTE) | 5.5 × 10⁻⁷ / °C (20–320 °C) | Virtually immune to thermal shock; can be heated to 1,100 °C and plunged into ice water without fracture. |
| Transformation / Annealing Point | ≈ 1,215 °C | Ensures dimensional stability during extreme chemical vapor deposition (CVD). |
| Softening Point | ≈ 1,683 °C | Allows customized flame-working, tube sealing, and torch manipulation. |
| Broadband Optical Transmission | > 90% (200 nm to 2,500 nm) | Covers UV-C germicidal wavelengths through the near-infrared spectrum. |
Our direct supply lines to Barcelona and surrounding industrial corridors address five critical high-precision workflows:
Acid-resistant digestion vessels, rotary evaporator quartz vapor ducts, and high-purity reflux columns for API synthesis in Martorell and Sant Cugat chemical plants.
Double-side optically polished clear fused silica plates with surface flatness to λ/4 and scratch-dig 20/10 for diagnostic stations at the ALBA Synchrotron.
Diffusion furnace core tubes (OD up to 520 mm), wafer transport boats, and quartz immersion tanks for cleanrooms in the Bellaterra academic belt.
As Catalonia advances its "Catalunya 2030" industrial modernization roadmap, three macro technological trends are reshaping local laboratory procurement:
1. Shift Toward Additive Micro-Flow Chemistry: Continuous-flow synthesis is rapidly supplanting traditional batch reactors in Barcelona's pharmaceutical research centers. This demands microfluidic glass chips and slotted quartz reaction plates capable of tolerating aggressive exotherms and hazardous reagents like fuming nitric or sulfuric acids without degradation.
2. Deep-UV and Vacuum-UV Photochemistry: Green synthesis initiatives require clean photochemical reactions driven by 254 nm germicidal and 185 nm excimer radiation. Traditional glass absorbs these wavelengths; VEZLO’s synthetic fused silica and ozone-free doped quartz tubes provide maximum fluence without photo-darkening or solarization.
3. Supply Chain Direct-Sourcing: Procurement frameworks within public bodies like the Generalitat de Catalunya and leading private labs now favor transparent manufacturer-direct agreements over domestic stockists to reduce public expenditure and ensure customized engineering reviews directly with production technicians.
A 33,000 m² modern production facility, RMB 10 million in fixed assets, and continuous participation in provincial and national science & technology breakthroughs.
Directly situated in China's quartz capital. We process 13 distinct grades of natural crystal and silica sand with total impurities ≤ 20 ppm, eliminating structural bubbling and devitrification risk.
Our multilingual technical engineering sales team provides detailed DFM (Design for Manufacturability) analysis, quotation breakdowns, and material datasheets within 2 hours of inquiry.
Developers of the 320 mm high-purity quartz tube under the Jiangsu Provincial Science & Technology Project and national-level review for 520 mm ultra-large furnace tubes.
Every fragile laboratory apparatus is individually encased in custom shock-absorbing EPE pearl foam, vacuum sealed, and palletized in ISPM-15 compliant fumigation-free plywood crates.
Direct answers addressing import tariffs, logistics to Port of Barcelona / El Prat Airport, specifications, and regulatory compliances.
Send your CAD drawings, sketches, or component parameters to our engineering team today. Experience factory-direct precision, reliable technical communication, and dedicated door-to-door delivery for Barcelona and the broader European scientific community.
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