Manufactured from premium Donghai natural silica crystal, our CE-certified quartz glassware guarantees exceptional chemical inertness, high thermal shock tolerance (ΔT 1100°C), and low hydroxyl (OH) content for analytical precision.
A technical examination of why synthetic and electric-arc fused quartz represents the premier choice for high-temperature pyrolysis, flash elemental analysis, and extreme corrosive fluid synthesis.
Standard borosilicate glassware suffers mechanical cleavage under abrupt thermal gradients exceeding 150°C. In contrast, fused silica boasts an extraordinarily low coefficient of thermal expansion (5.5 × 10⁻⁷ /K between 20°C and 320°C). This allows red-hot quartz combustion tubes at 1100°C to be instantaneously water-quenched without micro-cracking or structural deformation—a mission-critical parameter during rapid mineral pyrolytic testing.
Every combustion tube reactor dispatched to the Indonesian market complies with the stringent design standards of the European Pressure Equipment Directive (PED 2014/68/EU) and CE marking standards. Our pressurized reaction vessels are inspected for micro-inclusions, hoop stress distribution, and hydrostatic burst tolerances up to 10 bar at peak operational thermal boundaries.
Formed by electro-fusing crystal quartz sand from Donghai County (China's crystal capital), our products exhibit strict resistance to aggressive halide vapors, sulfurous fumes, nitric, and sulfuric acids at boiling thresholds. Furthermore, our low-OH grades (<20 ppm) suppress high-temperature infrared self-absorption, preventing premature devitrification into cristobalite.
| Physical & Thermal Properties | Testing Standard | Fused Quartz Value |
|---|---|---|
| Chemical Purity (SiO₂ Content) | ICP-OES / GD-MS | ≥ 99.99% |
| Continuous Working Temperature | DIN 52324 | 1100 °C |
| Peak Short-Term Temperature | ASTM C-598 | 1300 °C |
| Softening Point (Log η = 7.6) | ASTM C-338 | 1683 °C |
| Annealing Point (Log η = 13.0) | ASTM C-336 | 1215 °C |
| Thermal Expansion Coeff. (20-300°C) | Dilatometry | 5.5 × 10⁻⁷ K⁻¹ |
| Compressive Strength | ISO 17186 | 1150 MPa |
| Dielectric Strength (20°C, 1MHz) | IEC 60250 | 25 – 40 kV/mm |
Our workshop pairs CNC diamond grinding, five-axis laser drilling, grooving, and cold ultrasonic machining with skilled flame glassblowers. We produce bespoke combustion vessels containing integrated catalyst perforated beds, fritted quartz filter discs, gas sampling capillary nozzles, and KF/ISO/ConFlat quick-clamp flanges.
Bandung is widely recognized as Indonesia’s premier academic capital and technological hotbed. From advanced materials engineering to clean energy development, our specialized quartz combustion reactors and vacuum tubes support four core application sectors.
Researchers at Institut Teknologi Bandung (ITB) and adjacent national laboratories utilize our precision combustion tubes for high-temperature Chemical Vapor Deposition (CVD), 2D graphene growth, carbon nanotube synthesis, and precise carbon/sulfur determination across metal organic frameworks (MOFs).
Surrounded by active volcanic systems like Tangkuban Perahu and major geothermal fields (Kamojang, Wayang Windu, Patuha), West Java geochemical teams employ our heavy-wall quartz reactors to analyze acidic geothermal steam, volatile gas condensates, and sulfide mineralization without tube corrosion.
Proximity to state-owned biotechnology hubs, including PT Bio Farma, demands chemical synthesis vessels with zero ion leaching. Our 99.99% SiO₂ ozone-free quartz ampoules and sealed reactors prevent heavy metal contamination during sensitive reagent flame-sealing and peptide decomposition.
The extensive textile processing corridor along the Citarum basin is transitioning towards green catalytic water treatment and biomass gasification. Our quartz reaction tubes serve as high-temperature photoreactors and catalytic test beds exposed to aggressive oxidation and extreme ozone flux.
Indonesia's ongoing "Making Indonesia 4.0" initiative and mineral downstreaming agenda (Hilirisasi) are driving sustained capital investment into advanced thermal analytical instrumentation across the Greater Bandung area.
While smelting concentrates in Sulawesi and North Maluku, the analytical validation, hydrometallurgical R&D, and cathode precursor synthesis laboratories are heavily clustered in West Java's research corridors. Testing precursor high-purity nickel sulfates requires trace-free combustion analysis tubes to measure residual sulfur and carbon without background ceramic contamination.
Indonesia holds roughly 40% of the globe's volcanic geothermal reserves. Next-generation closed-loop binary plants operating in West Java demand superheated steam monitoring vessels. Fused quartz stands out as the only optically transparent material capable of enduring simultaneous high pressure (up to 8 MPa in thick-walled formats) and aggressive sulfurous corrosiveness.
Municipal waste-to-energy and biomass catalytic cracking are rapidly gaining prominence around Metropolitan Bandung. Pyrolysis testing setups rely on our heavy-wall quartz combustion tubes as transparent reactors, enabling continuous visual and spectroscopic monitoring of tar cracked phases and char conversion under precise thermal ramps.
Headquartered in Donghai County, Jiangsu—the premier epicenter of quartz raw materials—Lianyungang Zelvo Quartz Products Co., Ltd. combines raw mineral advantages with precision CNC machining to supply overseas universities, OEMs, and industrial plants.
Send your custom blueprints or hand-annotated sketches. Our seasoned engineering staff—averaging over a decade of fused silica craftsmanship—delivers complete dimensional evaluations and quotation feedback within 2 hours.
Every combustion tube undergoes optical stress polariscope inspections to eliminate residual internal strains, alongside micrometer wall-thickness audits and helium mass spectrometer leak inspections prior to crating.
We actively support academic researchers and pilot equipment engineers. We accept single-piece custom orders without punishing tooling surcharges, facilitating rapid iteration cycles for university test benches.
Shipments to Indonesia utilize shock-absorbing expanded polyethylene (EPE) custom-fitted liners enclosed inside fumigated multi-layer export plywood crates, ensuring safe transit to Tanjung Priok (Jakarta) or Bandung Dry Port (Gedebage).
Addressing essential technical, logistical, and compliance inquiries encountered by procurement officers, laboratory technicians, and import managers across West Java.
Whether you require standard 50mm combustion tubes for elemental analyzers or complex, multi-port quartz reactors for advanced chemical research in Bandung, our engineers review technical feasibility and furnish comprehensive quotations in under 2 hours.