Precision Quartz Discs, Tubes & Fabricated Solutions
Explore standard geometries and build-to-print fused quartz components engineered for semiconductor wafers, UV lithography, high-heat observation, and optoelectronic assemblies.
High-Precision Clear Quartz Glass Tubing
OD 10mm/14mm/20mm heat-resistant semiconductor pipeline tubing. Optimized for cleanroom fluidic pathways, thermal annealing, and precise torch welding.
Ultra-Thin Polished Quartz Sheets (0.1–0.5mm)
99.99% SiO₂ content, RoHS compliant, 200 Mesh finish. Ideal for precision cover slips, micro-cavity laser windows, and sensor substrates.
Custom One-End Closed Fused Silica Tubes
Engineered test tubes and thermocouple protection sheaths for CVD reactors, chemical synthesis, and semiconductor wafer diffusion processes.
JGS1 Deep-UV Optical Quartz Discs & Plates
Superior transmittance from 185nm to 2500nm. Annealed to eliminate internal stress birefringence; dedicated for excimer optics and laser viewports.
CNC Machined JGS1 Fused Silica Optical Windows
Micro-milled optical discs, counter-bored flanges, and semiconductor process jigs. Built to strict customer STEP/CAD geometric profiles.
Triple-Bore Laser Flow Tubes & Cavities
99.98% purity multi-channel flow cells. Custom C-shape bending, precision cutting, and specialized cooling conduits for medical laser heads.
Infrared Thermal Quartz Tubes for Disinfection
Ohmic resistance heating quartz barriers, sterilization modules, and laboratory drying vessels with thermal-shock resilience.
High-Pressure Polished Heavy-Wall Quartz Vessels
Withstands instantaneous exposure up to 1400°C. Custom optical edge polishing, beveling, and heavy hydrostatic pressure containment.
Material Science Benchmark: Transparent Fused Quartz vs. Synthetic Fused Silica Discs
In high-reliability industrial and scientific optical assemblies, selecting between natural fused quartz (such as JGS2 and JGS3) and synthetic fused silica (JGS1) dictates optical transmission limits, coefficient of thermal expansion (CTE) behavior, and radiation hardening. Natural fused quartz is produced by electrically melting high-purity natural crystal sand, rendering near-zero bubble counts and unmatched structural rigidity up to 1100°C continuous service. Synthetic fused silica, derived from chemical vapor deposition of silicon halides, is characterized by virtually zero metallic impurities (<0.1 ppm total) and the total absence of absorption bands across the deep UV spectrum down to 185 nm.
Precision quartz discs manufactured by Chinese suppliers undergo exhaustive furnace-annealing cycles to diminish structural micro-strain. When unannealed quartz is exposed to extreme thermal cycling or mechanical load in vacuum viewports, unrelaxed internal strain patterns trigger catastrophic isotropic fracture. Our polarization stress test validation ensures path retardance is held under 5 nm/cm, safeguarding mission-critical vacuum integrity.
| Characteristic / Parameter | JGS1 (Synthetic Fused Silica) | JGS2 (Optical Grade Fused Quartz) | JGS3 (Infrared Optical Quartz) |
|---|---|---|---|
| Primary Spectral Band | Deep UV to Visible (185nm – 2500nm) | UV to Near IR (220nm – 2500nm) | Visible to Mid IR (260nm – 3500nm) |
| SiO₂ Purity Ratio | ≥ 99.999% | ≥ 99.99% | ≥ 99.99% |
| Hydroxyl (OH⁻) Content | High OH (typically >1000 ppm) | Medium OH (150 – 300 ppm) | Dry / Low OH (<5 ppm) |
| Thermal Expansion (20°C–300°C) | 5.5 × 10⁻⁷ / °C | 5.4 × 10⁻⁷ / °C | 5.5 × 10⁻⁷ / °C |
| Annealing Point / Softening | 1180°C / 1710°C | 1215°C / 1730°C | 1220°C / 1730°C |
| Refractive Index (nd @ 589.3 nm) | 1.4585 | 1.4585 | 1.4585 |
| Primary Application Profile | Excimer lasers, semiconductor stepper optics | High-temp viewports, UV lamps, sight glass | IR spectrometry, gas analysis, heat pyrometry |
Future Sourcing & Technology Trends in Quartz Glass
Key market factors transforming OEM supply chains, wafer handling, and ultra-high-precision optical fabrication over the next decade.
Supply Chain Reshoring to Integrated Clusters
Global optical and semiconductor procurement leads are bypassing trading intermediaries in favor of vertically integrated manufacturers in Lianyungang, China. Direct facility integration from silica sand purification to CNC waterjet shaping cuts project lead times by 40% and secures full metallurgical traceability.
Sub-Nanometer Surface Roughness (Ra < 0.5nm)
Next-generation EUV inspection instruments and high-power fiber laser cutting heads require extreme surface finishes. Polishing quartz discs to super-smooth (Ra < 0.5nm) levels using chemical-mechanical planarization (CMP) prevents thermal blooming and surface breakdown at multi-kilowatt power densities.
Scalable Large-Aperture Quartz Discs (Ø > 450mm)
Demand for massive quartz discs and rings in 300mm/450mm semiconductor wafer fabrication tools is surging. Advanced continuous vacuum-fusion furnaces now permit monolithic quartz disc casting up to 800mm in diameter without micro-crystallite inclusions or radial striations.
Why Global Buyers Partner with Our Factory
Strict quality assurance verified by SGS onsite assessment, end-to-end raw material mastery, and comprehensive CNC precision fabrication under one roof.
SGS Onsite-Assessed 14,271 m² Facility
Our operations have undergone comprehensive on-site audits by the SGS Group. With over 14,000 square meters of production floorspace, we maintain standardized cleanrooms, an automated tube drawing division, and clean machining bays.
100% In-House Purification & Acid Pickling
Unlike secondary assemblers, our chemical refinement encompasses raw silica ore pulverizing, multi-stage screening, and concentrated acid pickling. We control raw SiO₂ purity at 99.99% before the first melting cycle begins.
Advanced CNC Drilling, Slotting & Lapping
Our 5-axis ultrasonic CNC machinery processes fused quartz discs, micro-grooved multi-bore laser conduits, and complex wafer boats with dimensional tolerances tighter than ±0.005mm and optical edge beveling.
Polariscope Annealing & Stress Release
Thermal cracking is prevented before it starts. Every batch of quartz blanks is treated in automated vacuum annealing ovens and 100% verified using cross-polarized stress shadowgraphy to ensure zero fringe distortion.
Shock-Absorbing Export-Certified Packaging
We export to over 40 countries across the US, Europe, and Asia-Pacific. Fragile discs are packed with static-free multi-layer foam cushioning, vacuum sealed, and crated in fumigated export-grade wooden cases.
Agile Rapid Prototyping (MOQ: 1 pc)
From CAD drawing to optical prototype in 5 to 7 days. Our in-house glassblowers and CNC engineers evaluate manufacturability early, lowering pilot development risk for tier-1 instrumentation builders.
Frequently Asked Questions by Technical Buyers
Real-world engineering guidance addressing tolerances, thermal shock resistance, spectral transmittance, and international shipment protocols.
What is the key differentiator between JGS1, JGS2, and JGS3 quartz discs?
JGS1 is synthetic fused silica made without bubble inclusions, featuring high deep-UV transmission (185nm–2500nm). JGS2 is flame-fused optical quartz with reliable transmission from 220nm to 2500nm, making it the most cost-effective solution for UV lamps and observation ports. JGS3 is electrically fused quartz containing minimal hydroxyl content (<5 ppm OH), which eliminates the 2.73μm water absorption peak and maximizes transmission across the infrared spectrum up to 3500nm.
What continuous and peak thermal loads can these quartz discs withstand?
Transparent fused quartz provides continuous thermal stability up to 1100°C and short-duration excursion limits up to 1300°C–1400°C. Its softening threshold is roughly 1730°C. With a low coefficient of thermal expansion (5.5 × 10⁻⁷ /°C), a heated red-hot quartz disc (1000°C) can be plunged directly into cold water without shattering, providing exceptional thermal shock resistance over borosilicate glass.
What surface finishes, optical flatness, and edge treatments can be specified?
Our discs are supplied with custom optical surface conditions: commercial 80/50 scratch-dig, precision 60/40, or high-precision laser-grade 20/10. Surface flatness is controlled up to λ/4 or λ/10 per 25mm diameter. Edges can be specified as rough-ground, fine-ground, polished with C-chamfers, or step-ground with o-ring sealing profiles to withstand vacuum differential pressures.
Can you produce customized discs and parts according to technical CAD drawings?
Yes. Our engineering division works directly with technical drawings in PDF, DWG, DXF, or STEP formats. We routinely machine complex parts including multi-bore holes, ground notches, concave/convex spherical profiles, chamfered steps, and welded quartz-to-quartz flanges for specialized fluidic or laser instrumentation.
What is the standard lead time and Minimum Order Quantity (MOQ)?
We support prototype and R&D validations with an MOQ of just 1 to 5 pieces for most disc dimensions. Standard catalog prototypes ship within 3 to 7 working days; high-volume production batches (1,000+ units) typically ship within 2 to 3 weeks following drawing confirmation and material selection.
How are brittle quartz optical discs protected against breakage during transit?
Products are cleaned in ultrasonic deionized-water baths, placed in individual dust-free sealed polyethylene bags or protective lens cases, wrapped in closed-cell high-density PE foam, and cushioned in heavy-duty triple-wall corrugated cartons or custom-built plywood cases. All shipments are insured and ship via air, sea, or express courier (DHL, FedEx, UPS).
Request a Factory-Direct Quote for Quartz Discs & Custom Optics
Consult with our quartz application engineers. Send your required outer diameters, thickness, optical tolerances, working temperatures, and drawings to receive a formal quotation within 24 hours.