Precision Quartz & Fused Silica Products
Manufactured to micron tolerances under ISO 9001 certified conditions. Each component delivers exceptional thermal shock resistance, transmission integrity from 185 nm to 3,500 nm, and trace-element control.
99.99% Pure Clear Quartz Twin Tube Polished Ozone Free Customized Bending Welding Cutting for Chemical Industry
- Purity: SiO₂ ≥ 99.99% elemental baseline
- Processing: CNC flame welding & precision bending
- Application: High-flux chemical heat exchange
High Purity Clear Fused Quartz Glass Tube Flat Cut Unpolished Ends
- End Finish: Flat diamond blade precision cut
- Continuous Temp: 1100 °C; Peak: 1450 °C
- Thermal Expansion: 5.5 × 10⁻⁷/°C ultra-low strain
Optical Cobalt Blue Glass Disc Circular Filter Furnace Sight Glass Window
- Spectral Profile: Select bandpass furnace observation
- Pressure Rating: Certified autoclave/blast containment
- Surface Quality: 60/40 or 40/20 scratch-dig
Thermal Shock Resistant Transparent Fused Quartz Furnace Tube for High Temperature Processing
- Thermal Stability: Zero shatter upon 1100°C water quench
- Geometry: Large bore (up to 450 mm OD) available
- Applications: LPCVD, PECVD, and MOCVD chambers
Fused-Quartz Combustion Sample Boats with Integrated Pull-Ring Handles for Laboratory Tube Furnace Heating
- Design: Reinforced pull-ring for hot recovery tongs
- Chemical Inertness: Resists all aggressive mineral acids
- Contamination Level: Trace metals < 15 ppm total
Precision Optical Fused-Quartz Square Plates with Chamfered Edges for Semiconductor Photomask Windows
- Flatness: λ/4 to λ/10 per standard aperture
- Edge Finish: 45° CNC safety-beveled micro-chamfer
- Transmittance: > 92% at DUV 193 nm & 248 nm
Optical Fused-Quartz Spectrophotometer Cuvettes with PTFE Lids for UV-Vis Precision Absorbance Analysis
- Optical Path Length: 10 mm ± 0.01 mm certified
- Window Fusion: Direct molecular fire-welded seams
- Cap: Inert Virgin PTFE solvent-proof seal
Custom Size Translucent Capillary Quartz Tube Polished Twin Pipe Ozone Free Chemical Industry
- Internal Diameter: Precision drawn down to 0.3 mm
- Tolerance: Strict bore consistency ± 0.02 mm
- Usage: Medical analytics, ozone-free UV sanitizers
Why Global Procurement Teams Rely on Kemzo Quartz
Operating from Lianyungang, Jiangsu Province, Donghai Kemzo Quartz Products Co., Ltd. sits at the heart of the world’s most extensive natural silica reserve. We combine natural raw crystal sorting with chemical vapor synthetic routes, maintaining absolute control over thermal deformation, bubble grading, and micro-flatness.
ISO 9001 Certified Quality Control
Every fused silica plate and custom optic undergoes full-spectrum spectrophotometric measurement, double-sided interferometric surface testing (λ/4 or λ/10), and strict stress polariscope inspection to ensure zero latent micro-cracks before dispatch.
High-Tech CNC Diamond Milling
Equipped with 5-axis ultrasonic CNC glass processing systems, we achieve tight dimensional tolerances down to ±0.02 mm. Capabilities include circular step cuts, counterbores, high-aspect ratio micro-holes, laser marking, and 45° precision protective chamfering.
Export-Grade Protective Packaging
Recognizing that silica plates and photomask substrates cannot tolerate static friction or particulate contamination, all parts are cleaned via multi-stage ultrasonic deionized washing, class-100 cleanroom sealed, and boxed in custom high-density shock-absorbing crates.
Fused Silica Plate Material Selection Matrix
Selecting between Synthetic Fused Silica (JGS1), Optical Grade Fused Quartz (JGS2), and Industrial/Thermal Fused Silica (JGS3) requires a thorough understanding of Hydroxyl ion [OH¯] content, bubble inclusion classes, and spectral working bands.
| Material Grade | SiO₂ Purity | OH¯ Content | Wavelength Range | Bubble Class (DIN 58927) | Typical Applications |
|---|---|---|---|---|---|
| JGS1 (Synthetic Fused Silica) | ≥ 99.9999% | < 5 ppm to 1200 ppm | 185 nm – 2,500 nm (Deep UV) | Class 0 (Bubble-free optical) | Semiconductor photomasks, DUV excimer lithography, laser windows, high-energy optics. |
| JGS2 (Optical Grade Quartz) | ≥ 99.99% | ≈ 30 ppm | 220 nm – 2,800 nm (UV-VIS) | Class 1 – 2 | Spectrophotometer windows, high-temp observation sight glasses, optical path dividers. |
| JGS3 (Infrared Fused Quartz) | ≥ 99.99% | < 5 ppm (Water-free) | 260 nm – 3,500 nm (Full IR) | Class 1 – 3 | Infrared detectors, furnace heating shields, pyrometer viewports, CO₂ laser optics. |
| Opaque / Milky Quartz | ≥ 99.95% | Standard | Diffuse / IR reflective | Uniform micro-pore cellular | Thermal insulation baffles, semiconductor CVD flange seals, chemical reaction furnace plates. |
Thermal & Mechanical Constants
Density: 2.20 × 10³ kg/m³
Coefficient of Thermal Expansion (20°C–300°C): 5.5 × 10⁻⁷ / K
Softening Point: 1683 °C • Annealing Point: 1215 °C
Continuous Max Operating Temp: 1100 °C (Short-term excursion to 1450 °C)
Optical & Dielectric Properties
Refractive Index ($n_d$ at 587.6 nm): 1.4585
Dielectric Constant ($\epsilon$ at 1 MHz): 3.75 (Extremely low RF loss)
Dielectric Strength: 25–40 kV/mm at 20 °C
Abbe Number ($V_d$): 67.8 (Low optical dispersion)
Future Procurement Trends: What B2B Buyers Must Prepare For
International sourcing of precision silica components is evolving past simple component purchasing. Global supply chains face shifting purity demands, carbon audits, and strict sub-nanometer planar requirements.
Direct Transition to Sub-Nanometer Substrates
With advanced semiconductor nodes migrating toward advanced packaging and extreme UV/DUV mask lithography, wholesale procurement now mandates double-sided planetary polishing yielding surface roughness ($Ra$) under 0.3 nm, accompanied by Zygo laser interferometer certification.
Cluster Sourcing Directly from Chinese Production Hubs
To avoid secondary markups from Western traders, Tier-1 instrument integrators are executing Direct Factory Agreements with Chinese manufacturers in Donghai, securing raw feedstock stability, raw SiO₂ batch purity records, and verified batch-level ICP-MS metal testing.
Demand for Value-Added Ready-to-Install Assemblies
Purchasing managers increasingly reject raw-cut blanks in favor of finished sub-assemblies. This includes fused silica plates pre-metallized with chromium/gold coatings, integrated Kovar or titanium alloy flanges, and laser-machined microfluidic channels.
Fused Silica Plate Development & Innovation Horizons
From excimer laser damage resistance to renewable energy manufacturing lines, high-purity fused silica plates are fundamental to next-generation clean technologies and extreme-condition optics.
High-Fluence Laser Induced Damage Threshold (LIDT)
Modern picosecond and femtosecond fiber lasers require optical plates with ultra-low internal absorption. Developing synthetic silica matrices with zero metallic inclusions prevents thermal ionization breakdown under GW/cm² power densities.
Extreme-Temperature Photovoltaic Texturing Plates
The rapid scaling of TOPCon and Perovskite-Silicon tandem solar cells demands oversized fused silica furnace baffle plates capable of withstanding constant 1200°C corrosive gas diffusion atmospheres without devitrification or sagging.
Hermetic Metal-Quartz Diffusion Bonding
Emerging aerospace sensor windows require fused quartz plates that maintain vacuum-tight hermetic seals during hypersonic aerodynamic friction heat spikes, bridging the thermal expansion gap between high-strength structural alloys and silica.
Frequently Asked Questions by B2B Sourcing Engineers
Addressing the core engineering, quality, logistic, and commercial concerns encountered when importing custom fused silica plates from China.
1. What is the fundamental difference between Fused Quartz and Synthetic Fused Silica plates?
Synthetic Fused Silica (JGS1) is synthesized using chemical precursor vapors (such as SiCl₄) oxidized in a cleanroom flame hydrolysis reactor. This results in virtually 100% pure amorphous silicon dioxide with negligible metallic impurities (< 0.1 ppm total) and zero micro-bubbles, granting exceptional deep-ultraviolet (DUV) transmission down to 185 nm, crucial for laser optics and semiconductor photomasks.
2. How do you prevent micro-cracking and chipping along the edges of custom-cut silica plates?
3. Can your factory produce fused silica plates to custom CAD drawings with tight dimensional tolerances?
4. What surface roughness ($Ra$) and optical flatness can be guaranteed for optical windows?
- Commercial Polish: 80/50 scratch-dig, $Ra < 2.0\text{ nm}$, flatness 1–2 λ per 25 mm dia.
- Precision Optical Polish: 60/40 or 40/20 scratch-dig, $Ra < 0.8\text{ nm}$, flatness λ/4 at 632.8 nm.
- Laser / Photomask Grade: 20/10 or 10/5 scratch-dig, $Ra < 0.3\text{ nm}$ (super-polished), flatness λ/10 across functional clear aperture, verified via digital Fizeau interferometry.