High Purity Opaque Milky White Fused Quartz Rectangular Plate
Engineered with controlled micro-porosity for optimal thermal insulation, uniform infrared backscattering, and furnace wall barrier lining.
Product DetailsHigh-Purity Fused Quartz Components
Manufactured from premium Donghai silica deposits with extreme thermal resistance up to 1450 °C, sub-micron geometric tolerances, and rigorous spectrophotometric verification.
99.99% Pure Clear Quartz Twin Tube Polished Ozone Free
Dual-channel high-transmission silica conduit configured for rapid fluid heating, catalyst recovery reactions, and corrosive gas exposure.
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4-Inch Sand Fused-Quartz Crucibles (Bubble-Free Inner Layer)
Designed for non-ferrous refining and silicon crystallization, preventing particulate detachment and melt contamination during continuous draw cycles.
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High Temperature Resistant Quartz Circular Silica Plate
Precision-cut round viewing windows and base plates capable of sustained operation at 1100 °C without mechanical warping or surface devitrification.
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Thermal Shock Resistant Transparent Quartz Furnace Tube
Ultra-low thermal expansion coefficient of 5.5 × 10⁻⁷/°C guarantees zero catastrophic failure during instantaneous thermal cycling and cold gas purging.
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Optically Polished Single-Crystal Quartz Wafers (Chamfered)
Double-side flat polished wafers designed for QCM sensors, optical windows, and micro-electromechanical substrates requiring precise parallel surfaces.
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Optical Cobalt Blue Disc Filter & Furnace Sight Window
Specialized optical absorption profile allows direct visual inspection of high-temperature combustion flames and metal melting zones while blocking yellow sodium glares.
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Clear Fused-Quartz Petri Dishes for Acid Evaporation
Total resistance to aggressive acids (HNO₃, H₂SO₄, HCl) at elevated temperatures; zero ionic leaching for trace element analysis and aggressive lab syntheses.
Product DetailsPhysical & Thermodynamic Material Standards
Essential material properties underpinning structural stability under extreme industrial environments.
| Property Parameter | Metric Value | Testing Standard / Functional Advantage |
|---|---|---|
| Silicon Dioxide (SiO₂) Purity | ≥ 99.99% | Trace metal elements (Fe, Al, Ti, Na) below 20 ppm total |
| Coefficient of Thermal Expansion (CTE) | 5.5 × 10⁻⁷ / °C (20°C to 320°C) | Virtually zero thermal expansion; shock resistance up to 1100°C water quench |
| Continuous Service Temperature | 1100 °C | Long-term dimensional stability; prevents thermal creep in high-heat processes |
| Maximum Peak Operating Threshold | 1450 °C | Short-term endurance below the softening point of 1683 °C |
| Refractive Index (nD at 589.3 nm) | 1.4585 | Stable optical dispersion, low internal strain birefringence |
| Spectral Transmission Window | 260 nm – 2500 nm (≥ 90%) | Deep UV through near-infrared transparency, critical for photochemistry |
| Chemical Acid Resistance | Grade 1 (ISO 719) | Inert to all acids, including aqua regia, excluding concentrated HF and hot H₃PO₄ |
Localized Industrial Application Scenarios in Hamhung
Hamhung stands as the primary chemical engineering, heavy manufacturing, and metallurgical synthesis nexus of South Hamgyong Province. Known historically for massive synthesis installations, chemical fiber manufacturing plants, organic fertilizer production facilities, and metallurgical research complexes, the region exerts severe operational demands on glass components. Ordinary borosilicate apparatus collapses under corrosive gas condensation and rapid thermal fluctuations inherent to these plants.
1. Chemical Synthesis and Acid Recovery Pipelines: Within the large-scale production loops for chemical reagents, chlorine derivatives, and sulfate synthesis centered around Hamhung's industrial areas, our 99.99% Pure Clear Quartz Twin Tubes and High-Purity Quartz Plates act as sight-glasses, reactor observation ports, and heat exchanger barriers. Their absolute chemical inertness eliminates ionic leaching, avoiding batch contamination during critical catalytic reactions.
2. Metallurgical Smelting and High-Temperature Kiln Viewports: Smelting facilities and high-temperature rotary kilns require robust visual inspection windows capable of enduring prolonged radiation without structural failure or devitrification. Our Cobalt Blue Optical Furnace Windows and Circular Quartz Silica Discs permit safe pyrometric inspection and slag observation up to 1450 °C, shielding technicians and optical monitoring systems from thermal damage.
3. Research Laboratories and Chemical Fiber Synthesis: In Hamhung's university laboratories and industrial analysis institutes, tracking trace moisture, evaluating organic solvents, and running aggressive acid digestions demands vessels that do not introduce micro-contaminants. Our Fused Quartz Petri Dishes and custom ground-joint apparatus provide complete structural durability against boiling concentrated acids, guaranteeing analytical precision.
Hamhung's Modernization Trends & Procurement Evolutions
Over recent industrial planning cycles, Hamhung's chemical infrastructure has increasingly transitioned toward energy-efficient manufacturing processes, closed-loop waste neutralization, and continuous-flow reaction methodologies. These shifts have drastically shifted material specifications:
Demand for Extended Component Lifespans: Traditional industrial glass requires frequent shutdowns due to thermal crack propagation and acid etching. Plant operators are actively replacing legacy borosilicate viewing glasses with custom-ground, stress-relieved fused quartz plates. The extended lifecycle significantly lowers unplanned furnace stoppages.
Transition to High-Purity Quartz Flanges and Plates: As local synthesis branches into higher purity compounds, fertilizers, and active industrial reagents, baseline metal impurity thresholds in equipment linings have tightened. Donghai Kemzo's supply of fused quartz plates featuring less than 20 ppm total metallic impurities prevents catalytic poisoning, aligning with the regional push toward modernized production standards.
Enterprise Strengths & Manufacturing Authority
Direct from Donghai County—China's premier crystal hub—Donghai Kemzo Quartz Products Co., Ltd. delivers certified, precision-ground quartz parts built to drawing.
Direct Mineral Proximity
Situated in Donghai County, we tap directly into massive natural crystal deposits, securing ultra-pure raw quartz sand and maintaining strict cost stability across high-volume supply orders.
Strict ISO 9001 Protocols
Every plate, disc, and tube undergoes systematic polarization polarimetry for internal strain release, CNC chamfer edge profiling, and multi-angle dimensional laser verification.
Full OEM Custom Fabrication
Equipped with computerized diamond cutting, mechanical double-sided polishing, drilling, ground taper jointing, and oxy-hydrogen high-temperature glass blowing to handle custom CAD prints.
Specialized Export Packaging
Fragile quartz glass shipments utilize multilayer pearl cotton buffering, custom honeycomb vacuum chambers, and reinforced export-grade plywood crates to guarantee damage-free delivery.
Industrial Procurement FAQ: Hamhung Technical Sourcing
Practical answers covering material selection, geometric tolerances, thermal resilience, and logistics handling for regional engineering teams.
How do fused quartz plates compare with borosilicate glass in industrial chemical reactors?
Fused quartz offers continuous service limits up to 1100 °C and short-term survival at 1450 °C, whereas standard borosilicate glass softens around 500 °C. Furthermore, fused quartz features a thermal expansion coefficient roughly one-sixth that of borosilicate, giving it total immunity to thermal shock cracking when subjected to immediate liquid-phase cooling. It also provides unmatched chemical inertness against concentrated industrial acids (excluding hydrofluoric and hot phosphoric).
Can you fabricate customized quartz plates according to specific CAD engineering prints?
Yes. With more than 11 years of specialized OEM and ODM glass production, our factory cuts, drills, edges, and polishes quartz according to technical drawings (.DWG, .DXF, .STEP, or PDF). We achieve surface flatness down to λ/4, parallelism under 20 arcseconds, and dimensional edge tolerances within ±0.05 mm, complete with custom counterbores, stepped edges, and chamfered profiles.
What is the distinction between transparent quartz plates and opaque milky white quartz slabs?
Transparent quartz is fully melted into an optically clear amorphous phase, ensuring high light and infrared transmission (over 90% across 260–2500 nm), making it perfect for sight windows, photochemistry, and sensor covers. Opaque milky quartz incorporates dense, microscopic enclosed gas bubbles that scatter light and infrared radiation. This makes milky quartz an outstanding thermal insulator, heat shield, and baffle for smelting furnaces and furnace heaters.
What precautions should be taken to prevent devitrification of quartz plates at extreme temperatures?
Devitrification (crystallization of amorphous silica into cristobalite) occurs above 1150 °C primarily when surface alkali metal contaminants (like fingerprints, dust, or sodium salts) are present. To maximize working life in furnace applications, plates should be handled with clean lint-free gloves, cleaned with high-purity ethanol or dilute nitric acid prior to heating, and kept free of industrial dust deposits during continuous thermal cycles.
What commercial delivery terms, payment currencies, and packaging solutions do you provide?
We support varied Incoterms including FOB, CFR, CIF, EXW, and DAF via reliable international freight forwarders, accepting settlements in USD, EUR, and CNY via T/T and L/C. To protect fragile quartz shipments across challenging freight legs, each unit is vacuum-sealed, separated by thick expanded polyethylene (EPE) foam, and secured inside shock-damped, ISPM-15 compliant export plywood cases.
Request Custom Quartz Glass Plate Specifications & Direct Factory Quotation
Have an active engineering requirement, custom dimensions, or an urgent kiln overhaul project? Our senior technical sales engineers provide material recommendations, tolerance feasibility reviews, and transparent pricing within 1 hour.
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