Featured Precision Quartz Products & Components
Precision-manufactured in Donghai County with laser CNC finishing, flame-welded hermetic seams, and full spectral verification ready for delivery to Zaragoza industrial clients.
Fused Quartz Glass Tanks: Material Science & Precision Fabrication Metrics
In modern corrosive fluid handling, photochemistry, and high-temperature thermal processing, standard borosilicate or aluminosilicate glasses fall short due to mechanical leaching, thermal deformation, and narrow optical bandwidths. Fused quartz tanks manufactured by Zunex Quartz Products Co., Ltd. represent an engineered apex in non-metallic containment. Composed of over 99.99% high-purity Silicon Dioxide (SiO&sub2;), our quartz tanks, bath assemblies, and reaction vessels are synthesized in Donghai County—the international crystal and quartz hub of China—utilizing advanced arc-fusion, flame-fusion, and synthetic vapor deposition pathways.
The molecular integrity of fused silica exhibits a three-dimensional continuous random network of SiO&sub4; tetrahedra. This crystalline absence guarantees an ultra-low linear coefficient of thermal expansion (5.5 × 10⁻⁷ /°C), conferring near-immunity to severe thermal shock. An operational bath can undergo a rapid temperature drop from 1100°C directly down to 20°C in chilled water quench tests without surface crazing, macroscopic fracture, or mechanical yielding. For procurement teams in Zaragoza seeking long-lifespan industrial acid tanks, this structural consistency prevents downtime during batch cycle shifts.
| Physical / Chemical Property | JGS1 (Synthetic Silica) | JGS2 (Optical Fused Quartz) | JGS3 (Infrared Fused Quartz) | Industrial High-Purity Grade |
|---|---|---|---|---|
| SiO&sub2; Purity Level | ≥ 99.999% | ≥ 99.99% | ≥ 99.98% | ≥ 99.95% |
| Spectral Range | 185 nm – 2500 nm (Deep UV) | 220 nm – 2500 nm (UV-Vis) | 260 nm – 3500 nm (IR Optimized) | General Industrial / Thermal |
| Softening Temperature | 1730 °C | 1683 °C | 1680 °C | 1650 °C |
| Annealing Point | 1220 °C | 1215 °C | 1210 °C | 1180 °C |
| Continuous Service Temp | 1150 °C | 1100 °C | 1100 °C | 1050 °C |
| Hydroxyl (OH⁻) Content | ≤ 1000 – 1200 ppm | ≤ 150 – 200 ppm | ≤ 5 – 10 ppm (Water Free) | Variable (≤ 200 ppm) |
| Acid Resistance (HNO&sub3;, HCl, H&sub2;SO&sub4;) | Extreme (>99.98% mass retention) | Extreme (>99.98% mass retention) | Extreme (>99.98% mass retention) | Extreme (>99.95% mass retention) |
Fabrication of quartz tanks requires tight thermal control to prevent micro-crystallization (devitrification) into cristobalite. At Zunex Quartz, quartz plate edges are CNC beveled, precision ground to ±0.05 mm mechanical tolerances, and assembled using oxyhydrogen torch fusion welding. Annealing lehrs hold the welded tanks at 1215°C to relieve internal stresses, verified through polariscope optical birefringence checks before shipping. Whether your Zaragoza facility requires ultrasonic cleaning baths, electroplating tanks, wafer carriers, or UV-transparent flow cells, our direct-factory engineering delivers uncompromised performance.
Zero Chemical Leaching
Complete resistance to hot acids including Aqua Regia, Nitric, and Sulfuric acid. No trace metallic ions are released into high-purity chemical baths.
Thermal Shock Immunity
Near-zero expansion allows cycling between ambient cold rinse baths and 1100°C high-temperature stages without mechanical stress failure.
Precision CNC & Laser Welds
Custom laser-drilled inlet ports, weir overflow baffles, quartz heating wells, and optical side-windows integrated seamlessly to client drawings.
Localized Deployment in Zaragoza: Key Application Sectors
Zaragoza serves as the operational spine of northeastern Spain, linking Madrid, Barcelona, Bilbao, and Valencia. Driven by major platforms like PLAZA (Plataforma Logística de Zaragoza), prominent automotive corridors in Figueruelas, renewable hydrogen hubs, and research institutions such as the Instituto de Nanociencia y Materiales de Aragón (INMA - CSIC/UNIZAR) and CIRCE, the local industrial fabric demands high-grade specialized fused quartz equipment.
Automotive Surface & Coating Baths
In Figueruelas and Malpica industrial zones, advanced cathodic electrodeposition and anodizing lines utilize quartz tanks for acidic pre-treatment solutions, eliminating bath contamination found in polymer-lined tanks.
Hydrogen & Renewable Energy R&D
Aragon's rapid emergence as a green hydrogen vanguard requires quartz electrolysis test cells, high-temperature photo-reactors, and thermal reaction chambers able to endure aggressive syngas and acid digestion.
Academic & Nanomaterial Research
Researchers at Universidad de Zaragoza (UNIZAR) and CSIC deploy custom JGS1 optical quartz tanks for continuous UV spectroscopy, XRD sample testing, laser excitation cells, and sol-gel synthesis reactors.
Semiconductor & Power Electronics
Growing regional power electronics supply chains leverage fused silica wet benches, megasonic quartz baths, and wafer immersion carriers for silicon and silicon-carbide (SiC) chemical wafer stripping.
Pharmaceutical & Fine Chemicals
Polígono Industrial de Cartuja chemical plants require chemically inert reaction vessels for synthesis that eliminate iron, boron, and alkali contamination during high-purity API production.
Photovoltaic Cell Etching
Solar ingot and cell manufacturers in the broader Ebro Valley industrial corridor use our quartz tanks for hydrofluoric/nitric texturing baths, maintaining dimensional precision under continuous thermal loads.
Aragonese Industry Trends: Why Direct Chinese Quartz Procurement Dominates
Over the past five years, industrial buyers in Zaragoza and the broader Aragon autonomous community have transitioned away from domestic European distributors toward direct Tier-1 Chinese manufacturers. Several macroeconomic and technological drivers dictate this trend:
1. Decoupling from High European Fabrication Overhead: European scientific glassblowing operations face severe natural gas and labor cost pressures, pushing lead times beyond 16–24 weeks for custom quartz tanks. By partnering directly with Zunex Quartz in Donghai, European procurement teams reduce component acquisition costs by 35% to 55% while trimming fabrication turnarounds to 10–18 days.
2. Growth of Sustainable Chemistry & Cleanrooms: Modern European REACH regulations continue to phase out toxic plasticizers (such as phthalates used in polymer tanks) that risk secondary solvent leaching. Fused quartz is completely inert, infinitely recyclable, and zero-emission, aligning with environmental targets set by the Government of Aragon.
3. Direct PLAZA Air and Rail Cargo Efficiency: Zaragoza Airport (ZAZ) has established itself as one of Spain's primary cargo hubs, with direct interline connections to Chinese air terminals. Critical quartz tanks packed in custom shock-absorbing foam and timber crates clear customs swiftly via the Corredor Henares-Zaragoza rail and motorway logistics channels, guaranteeing delivery integrity directly to factory floors.
Why European Engineers Rely on Zunex Quartz
Headquartered in Donghai County, Jiangsu Province, Zunex Quartz Products Co., Ltd. combines raw quartz extraction and processing access with world-class secondary machining. With an annual revenue of US$2.5M – US$5M and an international engineering support desk, we bridge the gap between technical requirements and manufacturing execution.
- ≤ 2-Hour Response Time: Verified 100% technical response rate with direct engineering review of PDF/DWG/STEP drawings.
- Laser CNC Precision Finishing: Advanced non-contact laser drilling, wafer slotting, edge chamfering, and micro-grooving with zero edge chipping.
- 43% Verified Repeat-Order Rate: Consistent dimensional repeat tolerance ensures our replacement quartz tanks drop directly into existing tooling beds.
- Certified Materials (JGS1, JGS2, JGS3): Spectrophotometer-tested transmission certificates and spectrographic purity reports provided with all shipments.
- Zero-Breakage Packaging Standard: Multi-layer shock absorbent polyethylene casing suspended within export-grade plywood crates.
Engineering Tolerance Protocol
Every custom tank fabricated for export undergoes rigorous 5-stage verification prior to crate closure:
Frequently Asked Questions for Zaragoza Buyers
Clear answers covering engineering feasibility, logistics to Aragon, material grades, and payment procedures.
What technical drawings or files are required to receive a custom quartz tank quotation?
How are fragile fused quartz tanks protected during air or sea freight to Zaragoza, Spain?
What is the critical chemical difference between JGS1, JGS2, and JGS3 quartz for tank fabrication?
• JGS1 (Synthetic Fused Silica): Manufactured via chemical gas phase synthesis (SiCl&sub4; oxidation). It provides exceptional purity with almost zero bubble inclusions and transmits deeply into the vacuum ultraviolet spectrum (down to 185 nm). It is ideal for photochemical reaction tanks and UV digestion cells.
• JGS2 (Optical Grade Quartz): Produced from refined natural quartz crystal through oxyhydrogen flame fusion. It provides high optical clarity across the UV-visible range (220–2500 nm), making it the industry standard for chemical process sight glass tanks, acid bath containers, and semiconductor wet benches.
• JGS3 (Infrared Grade Quartz): Fused in vacuum conditions to eliminate water molecules (OH⁻ ≤ 5 ppm). This eliminates the 2.73 µm absorption band, allowing maximum transmission across visible and IR bands up to 3500 nm, making it ideal for infrared furnace viewing chambers and pyrometry sight windows.
Can your quartz tanks withstand Hydrofluoric Acid (HF) or concentrated alkaline baths?
What is the standard production lead time and customs process for Spanish deliveries?
Ready to Engineer Your Quartz Glass Tanks?
Send your engineering drawings or specification sheets directly to our Donghai factory technical team. Receive a comprehensive review, thermal-mechanical validation, and factory-direct quotation within 2 hours.