Fabricated from 99.99% pure silica raw materials, engineered to withstand continuous operating temperatures up to 1100°C, extreme chemical corrosion, and aggressive atmospheric conditions in coastal industrial zones.
As the economic engine of East Java (Jawa Timur) and Indonesia's second-largest metropolis, Surabaya serves as a primary hub for chemical manufacturing, petrochemical refining, metal processing, maritime engineering, and advanced research institutions. Maintaining operational uptime across these demanding processing environments requires component materials that exceed the physical and chemical thresholds of standard borosilicate glass or industrial ceramics.
Manufactured in Donghai, Jiangsu—China’s premier quartz manufacturing capital—by Lianyungang Zelvo Quartz Products Co., Ltd., our customized fused silica and fused quartz components provide the exact physical properties demanded by East Java's engineering sector:
| Physical / Chemical Property | Technical Metric (Fused Quartz) | Operational Value for Surabaya Facilities |
|---|---|---|
| Chemical Composition | ≥ 99.99% SiO₂ (Low OH options available) | Prevents metal ion leaching in high-purity chemical testing and pharmaceutical ampoules. |
| Thermal Resistance | Continuous: 1100°C | Short-term: 1300°C | Ensures dimensional stability inside high-temperature CVD tube furnaces and smelting crucibles. |
| Thermal Expansion Coefficient | 5.5 × 10⁻⁷ / K (20°C to 320°C) | Near-zero expansion eliminates thermal shock cracking during rapid water quenching or thermal cycling. |
| Optical Transmission | ≥ 90% (UV-Vis Spectrum down to 185 nm) | Ideal for high-intensity UV disinfection systems, optical windows, and solar PV research. |
| Corrosion Inertness | Resistant to all acids except HF and H₃PO₄ (>300°C) | Withstands concentrated HCl, HNO₃, and aggressive organic solvents in fertilizer and palm oil refineries. |
Surabaya’s diverse industrial corridors—ranging from the Rungkut Industrial Estate (SIER) and Pasuruan Industrial Estate Rembang (PIER) to the heavy chemical complexes in Gresik—require distinct quartz glass configurations engineered for specialized processing demands.
In the heavy industrial zones of Gresik, laboratories dealing with ammonia, sulfuric acid, and fertilizer synthesis utilize our 99.99% pure quartz combustion tubes and thick-walled process cylinders. These components remain inert against hot acidic fumes, eliminating sample contamination during quality assurance spectrometry.
East Java's palm oil refining and bio-energy centers rely on analytical instruments requiring custom BET surface area quartz sample tubes and twin-bore heating pipes. Our precise flame-welded ampoules and polished end-faces ensure vacuum-tight seals during high-temperature adsorption analysis.
Leading research institutions such as Institut Teknologi Sepuluh Nopember (ITS) and Universitas Airlangga (UNAIR) utilize our custom drawing-based fabrication for fused silica wafers, optical UV plates, and CVD furnace reaction boats to drive innovation in thin-film deposition and nanotechnology.
Naval defense firms and maritime maintenance hubs near Pelabuhan Tanjung Perak require extreme pressure-resistant sight glasses and high-purity quartz bell jars capable of withstanding thermal shocks and marine salt corrosion during specialized thermal treatment of marine alloys.
Surabaya's municipal and industrial wastewater facilities adopt high-power UV sterilizers incorporating our ozone-free, high-transmittance UV quartz sleeves and U-bent quartz tubes to ensure maximum UV-C intensity and continuous bio-burden reduction.
As Surabaya expands its high-tech manufacturing presence, semiconductor test chambers and thermal diffusion lines employ our flanged quartz pipes, ground discs, and frosted quartz covers for ultra-clean wafer handling free from particulate contamination.
Procurement directors and laboratory managers in Surabaya are shifting away from off-the-shelf catalog parts toward drawing-based, direct-from-manufacturer sourcing model. Three core market dynamics drive this transition:
Indonesia's national push to refine raw minerals locally—particularly copper, nickel, and bauxite—has triggered rapid growth in downstream smelters across East Java. Smelting labs demand ultra-high-temperature quartz crucibles and custom analytical combustion tubes capable of surviving repeated thermal cycles up to 1300°C.
Continuous chemical processing lines in SIER and PIER cannot afford extended delivery delays caused by multi-tiered domestic distributors. Working directly with Lianyungang Zelvo Quartz provides buyers with direct technical reviews within 2 hours, CAD validation, and fast-track air freight to Juanda International Airport (SUB).
Modern analytical instrumentation requires custom geometries—such as CNC diamond-grooved optical plates, laser-drilled micro-hole arrays, and precision ground flanges. Our integrated facility in Donghai seamlessly bridges glass-blowing artisan techniques with modern CNC computer-controlled machining.
Located in Donghai, Jiangsu—the global capital of natural crystal and high-purity silica raw material processing—Zelvo Quartz provides end-to-end manufacturing control from raw silica ingot selection to final optical polishing.
Our plant operations, legal registration, and glass-blown fabrication lines are fully verified on site. By purchasing directly from our facility, Surabaya buyers eliminate trading agent markups while securing guaranteed material traceability.
Our workshop integrates state-of-the-art processing capabilities: laser micro-drilling, precision CNC diamond cutting, surface grinding, chemical frosting, robotic flame bending, and multi-bore vacuum welding.
We actively support university research, pilot plant design, and custom replacement parts with a true 1-piece Minimum Order Quantity (MOQ) for custom drawings, alongside high-capacity production for batch orders.
Answers to critical logistics, technical compliance, and custom ordering questions from procurement managers across East Java.
Need a custom quote, technical drawing review, or urgent replacement part for your facility in Surabaya or East Java? Our engineering team will review your specs and respond within 2 hours.
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