Verified semiconductor-grade and high-temperature quartz products exported directly from Lianyungang Vulra Quartz Products Co., Ltd.
As Cambodia accelerates its industrial transformation under the "Industrial Development Policy" and expands high-value manufacturing within the Phnom Penh Special Economic Zone (PPSEZ), the regional demand for ultra-high purity refractory materials, quartz crucible pedestals, furnace tube liners, and specialized laboratory glassware has increased exponentially. The manufacturing landscape in Greater Phnom Penh—spanning electronics assembly, photovoltaic (PV) solar cell processing, metallurgical testing laboratories, and advanced chemical synthesizing facilities—requires quartz materials capable of operating continuously under extreme physical and chemical stress.
A quartz crucible base (also designated as a quartz crucible pedestal, support dish, or thermal carrier base) serves as the primary structural foundation in Czochralski (CZ) crystal growth furnaces, directional solidification systems (DSS), and high-frequency induction melting units. Under operating temperatures exceeding 1100°C to 1450°C, standard silicate or low-grade refractory ceramic bases suffer from devitrification, alkali-metal contamination, and catastrophic thermal shock failure. China’s leading exporter, Lianyungang Vulra Quartz Products Co., Ltd. (operating from Donghai—China’s global crystal capital), provides the Phnom Penh market with direct access to certified high-purity (99.99%–99.999% SiO₂) fused quartz components manufactured to exact geometric tolerances.
Our engineering team reviews 2D/3D CAD drawings for thermal stress points, wall thickness ratios, and custom flange interfaces within 24 hours.
Get CatalogFused silica and fused quartz represent the highest tier of single-component glass materials used in modern thermal engineering. The key to Vulra Quartz’s market leadership serving Cambodian industrial buyers lies in our rigorous raw material selection from Donghai’s natural pegmatite quartz deposits and state-of-the-art oxy-hydrogen flame synthesis.
| Physical / Chemical Parameter | High-Purity Fused Quartz (Vulra Standard) | Synthetic Fused Silica (Optics Grade) | Standard Borosilicate Glass |
|---|---|---|---|
| SiO₂ Purity Level | ≥ 99.99% – 99.999% | ≥ 99.9999% | 80% – 81% |
| Maximum Working Temp (Continuous) | 1100°C | 1200°C | 450°C - 500°C |
| Peak Operating Temperature (Short-Term) | 1450°C | 1500°C | 600°C |
| Softening Point | 1683°C | 1710°C | 820°C |
| Coefficient of Thermal Expansion (CTE) | 5.5 × 10⁻⁷ / °C (20°C to 320°C) | 5.4 × 10⁻⁷ / °C | 33 × 10⁻⁷ / °C |
| Hydroxyl (OH⁻) Content | < 5 ppm to 30 ppm (Customizable) | < 1 ppm (Dry grade) | N/A |
| Acid Resistance (Except HF / H₃PO₄ > 300°C) | Class 1 (Extremely High) | Class 1 (Extremely High) | Class 1-2 |
The exceptional performance of a Quartz Crucible Base in high-temperature environments depends directly on its extremely low Coefficient of Thermal Expansion (CTE). With a CTE of just 5.5 × 10⁻⁷ / °C, Vulra’s quartz pedestal can be plunged into room-temperature atmospheres directly from a 1100°C furnace without experiencing structural micro-fracturing. This thermal stability prevents furnace shutdowns in Phnom Penh facilities where continuous melting runs are critical to maintaining production yield.
Understanding local operational conditions in Cambodia allows Vulra Quartz to tailor customized thermal glass solutions specifically optimized for local climate factors, power conditions, and plant operational models.
Crucible bases, pedestals, and thick-wall diffusion tubes supporting directional crystallization furnaces. High viscosity at 1100°C prevents base sagging under heavy silicon load weight.
Heavy-duty quartz crucibles and flow-splitting bottles used in high-acid chemical digestion and precious metal assaying laboratories serving regional extraction operations.
Ozone-free translucent photocatalytic reactors designed for UV light photodegradation, water splitting, and green energy research at leading university institutes in Phnom Penh.
SJ 130 negative-pressure leak-proof vacuum quartz tubes built to hold high vacuum integrity (< 10⁻⁴ Pa) under high process thermal cycles without structural deformation.
Clear quartz tablets, polished sight glasses, and observation windows installed in industrial biomass boilers, incineration plants, and continuous thermal kilns across Cambodia.
Custom precision quartz bulb tubes (6mm, 9mm, 12mm) engineered specifically for nitrogen absorption analyzers, gas sorption, and surface catalysis testing.
Cambodia’s industrial transformation has positioned Phnom Penh as a prime beneficiary of international supply chain realignments across Southeast Asia. Key growth vectors fueling quartzware demand include:
To assist procurement managers, thermal process engineers, and research scientists in Phnom Penh, the technical attributes of our featured product lines are detailed below:
1. SJ 130 High-Precision Quartz Vacuum Tube: Designed for high-vacuum, low-leakage negative pressure thermal processes. Constructed with 99.99% pure silica sand, fire-polished rim endings, and tight dimensional tolerance (±0.05 mm on wall thickness). Essential for semiconductor wafer annealing and inert gas atmosphere sintering.
2. Quartz Photocatalytic Reactor for Hydrogen/Oxygen Generation: Utilizing UV-transparent, ozone-free fused silica, this vessel allows maximum spectral transmittance in the UV-A and UV-B spectra (> 90% transmittance at 254 nm). Precision cutting and custom flange options accommodate gas sampling ports and electrochemical sensor arrays.
3. High-Temperature Quartz Sheets & Tablets: Manufactured via precision cold-machining, optical grinding, and flame-polishing. Available in circular, square, or custom CNC-milled shapes. Used extensively as sight glasses, optical flats, and thermal shields in industrial kilns operating continuously up to 1100°C.
4. SJ QUARTZ Flow Splitting Bottle & Chemical Vessels: Formed with specialized flame-welded branch tubes, these vessels offer superior chemical resistance against concentrated acids (such as boiling HCl, HNO₃, and H₂SO₄). High thermal shock resistance enables rapid fluid temperature transitions without cracking.
5. Custom Hand-blown Fused Silica Quartz Vessels: For applications demanding 99.999% purity without trace metallic contamination. Hand-worked by master glassblowers with fire-polished handles and reinforced stress points, ideal for ultrapure acid storage and standard lab distillation.
6. Heavy-Duty Thick-Wall Quartz Tubes (SJ 150 Series): Featuring wall thicknesses up to 15 mm and outer diameters up to 800 mm. Built to endure heavy physical mechanical load and severe thermal gradient stress inside industrial furnace systems.
7. SJ 140 Precision Polished Quartz Furnace Boats: Custom-designed wafer carriers and powder sintering trays featuring high temperature rating (1100°C continuous), zero outgassing, and smooth, acid-cleaned surface finish preventing sample contamination.
Clear technical and commercial answers tailored for Cambodian industrial procurement teams.
Located at No. 9, Dingxin Road, Jiangsu Donghai Economic Development Zone, Lianyungang Vulra Quartz Products Co., Ltd. benefits from operating directly within the epicenter of China's quartz crystal refining industry. Donghai accounts for over 80% of China's total high-purity quartz raw material processing, providing our facility with immediate access to uncompromised SiO₂ feedstock.
Our manufacturing premises, legal registration, production capacity, and automated flame-lathe machinery have been independently audited and verified on-site by TÜV Rheinland.
From raw silica melting, glass lathe tube turning, precision diamond-saw cutting, CNC drilling, surface optical polishing, to continuous furnace annealing—all under unified ISO quality control.
All exported quartz products meet strict European CE safety standards and RoHS environmental guidelines, ensuring zero toxic heavy metals or unreacted impurities.
Whether you require standard stock clear quartz tubes or custom engineered quartz crucible pedestals built to exact CAD blueprints for your Phnom Penh facility, Vulra Quartz provides the optimal balance of material purity, mechanical precision, and direct export pricing.
Click below to download our complete product catalog or request a direct engineering consultation with our technical sales director.
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