High Purity 99.99%
Factory Custom High Pressure 99.99% Pure Quartz Glass Tube Bending/Welding Ozone Free Polished Surface
1100°C Cont.
Ozone-Free
Welded Flanges
Precision Component Catalog
Engineered Fused Quartz Solutions for Ukrainian Industry
Direct factory manufacturing of customized high-temperature quartz components, fabricated with tight dimensional tolerances, flame-polished finishes, and optical clarity for extreme operational conditions.
High Purity 99.99%
Twin-Bore Design
Customize Size Thickness Twin Tube Clear High Purity Flange Quartz Tube Fused Silica Polished Flange Ring Bending Welding
IR Radiator Ready
Precision Wall
Vacuum Flanges
Complex Bending
High Quality Transparent U-Bent Quartz Glass Tube Bending/Cutting/Welding Services 99.99% Pure Quartz Ozone Free Polished
U-Bend Radii
Zero Distortion
Heat Exchangers
Crucible & Tank
Manufacturers Customized Fused Quartz Glass High Temperature Resistant Circular Cylinder Crucible Tank Welding Cutting Custom
1450°C Peak
Acid Digest
Foundry Tested
High Pressure Dual
Customizable High Pressure High Quality Polished Clear Transparent 99.99% Pure Quartz Glass Twin Tube Bending/Welding/Cutting
Dual Channel
Optical Polishing
Custom Pitch
XRD / Analysis
High Temperature Fused Quartz Glass Sheet for XRD Sample Tank Testing Chip Slotted Carrier Cutting Service Custom Sizes 1100C
Zero Background
Precision Slotted
Laser Micro-Cut
BET Surface Analysis
Chemisorption BET Test High Pressure 99.99% Pure Ozone Free Clear Quartz Glass Twin Tube Bending Welding Services Quantachrome
Quantachrome Spec
Gas Tight Joint
Ultra-Clean Cell
Optical Ends Polished
Factory Custom Both Ends Polished High Purity Transparent Quartz Twin Tube Bending Moulding Welding Cutting Capabilities
Parallel Alignment
Flame Polished
High Transmission
99.99%
SiO2 Raw Purity
1300°C
Peak Thermal Endurance
≤ 2h
Engineer Technical Response
0Breakage
Reinforced Export Transit Policy
Technical Whitepaper • Material Selection
Material Engineering Standards: Fused Quartz vs. Fused Silica
In high-stress industrial environments across Central and Eastern Europe, specifying the correct grade of amorphous silicon dioxide (SiO2) determines the reliability, cycle life, and thermal efficiency of process machinery. Zunex Quartz supplies verified grades designed to withstand extreme thermal gradients, corrosive chemical atmospheres, and high-vacuum conditions.
| Physical & Thermal Properties | Testing Standard | Metric Value | Imperial / Secondary Unit |
|---|---|---|---|
| Density (ρ) | ASTM C693 | 2.20 ± 0.02 g/cm³ | 137.3 lb/ft³ |
| Softening Point | ASTM C338 | 1683 °C ± 15 °C | 3061 °F |
| Annealing Point | ASTM C336 | 1215 °C ± 10 °C | 2219 °F |
| Continuous Working Temp | Operational Rating | 1100 °C | 2012 °F |
| Short-term Peak Working Temp | Continuous Limit | 1300 °C – 1450 °C | 2372 °F – 2642 °F |
| Coeff. of Thermal Expansion (CTE) | 20°C to 320°C (DIN 52328) | 5.5 × 10-7 K-1 | Virtually zero thermal expansion |
| Thermal Shock Resistance | Water Quench Test | 1100 °C to 20 °C water | No fracture or micro-crack development |
| Dielectric Constant (ε) | 1 MHz @ 25°C | 3.75 – 3.80 | Ultra-low electrical loss |
| Vickers Hardness (HV) | EN ISO 6507 | 8800 – 9200 MPa | Mohs Scale 5.5 – 6.5 |
Optical Grade Spectrum Classification (JGS1, JGS2, JGS3)
Choosing the correct optical transmission range prevents photochemical degradation and maximizes process yield. For Ukrainian analytical laboratories, photovoltaic fabrication plants, and defense sensor integration, we offer three primary glass classifications:
JGS1 • Synthetic Fused Silica
Synthesized via SiCl4 gas phase oxidation. Virtually free of metallic impurities (Fe ≤ 0.1 ppm). Transmits with high fidelity in the deep ultraviolet (DUV) range from 185 nm to 2500 nm. Engineered for laser optical viewports, UV lithography, and high-precision spectrophotometer cuvettes.
JGS2 • Optical Grade Fused Quartz
Refined from ultra-pure natural quartz crystals. Delivers broad optical transmission between 220 nm and 2500 nm. Free of visual bubbles and inclusions, making it the industry benchmark for diffusion furnace viewports, sight glasses, and metallurgical inspection ports.
JGS3 • Infrared Optical Quartz
Manufactured under low-pressure vacuum furnace conditions to eliminate hydroxyl ([OH-] ≤ 5 ppm) absorption bands. Transmits cleanly from 260 nm to 3500 nm, ensuring maximum thermal efficiency for infrared heating tubes, carbon-fiber emitters, and pyrometric observation ports.
Localized Industrial Integration
Applications Serving Ukraine's Industrial Infrastructure
From metallurgical heartlands in Dnipropetrovsk and Zaporizhzhia to advanced analytical hubs in Kyiv, Lviv, and Kharkiv, our fused quartz solutions perform in high-demand domestic operational sectors.
Metallurgy & Foundry Analysis
Vital for slag control, molten metal analysis, and vacuum melting crucibles in heavy metallurgical complexes across Kryvyi Rih and Zaporizhzhia. Our quartz sampling tubes withstand direct immersion into 1500°C molten steel without wall collapse or gas contamination.
Thermal Processing & Heating
Reconstruction of energy-efficient drying systems, grain dehydration plants, and industrial furnaces requires durable twin-tube infrared quartz heaters. Low coefficient of thermal expansion guarantees long emitter lifespan amid frequent power fluctuations.
Chemical & Petrochemical Labs
Used widely across fertilizer manufacturing plants (Cherkasy, Rivne) and national laboratories. Fused quartz reacts with no organic solvents or inorganic acids (except hydrofluoric and phosphoric above 150°C), making it the gold standard for digestion apparatus and acid distillation.
Advanced R&D and Optoelectronics
Serving university engineering laboratories and technology parks across Kyiv, Lviv, and Kharkiv. From BET surface area gas sorption analyzers (Quantachrome compatible) to X-ray diffraction zero-background quartz sheets, we fulfill high-precision specifications to custom drawing.
Market Dynamics & Procurement Strategy
Key Strategic Trends in Ukraine's Quartzware Procurement
An analytical overview of structural changes shaping industrial component sourcing, replacement cycles, and international supply lines into Ukraine.
Transition from Legacy Standards to ISO/DIN
Ukrainian manufacturing is phasing out outdated legacy Soviet-era standards (GOST 15130-86) in favor of European norm EN ISO 9001, DIN 12336, and ASTM C-series quartz testing. Ukrainian engineers now require clear spectral transmission documentation, chemical purity certificates (trace metal PPM analysis), and verified mechanical dimensional tolerances (within ±0.05 mm).
Post-Disruption Industrial Modernization
Industrial recovery programs prioritize energy efficiency. Ukrainian glass furnaces, drying ovens, and heat exchangers are being modernized with twin-tube quartz emitters and custom flanged fused silica reactor tubes that reduce power consumption by up to 35% compared to legacy metal resistive heating elements.
Resilient Overland Logistics Corridors
Direct delivery to Ukraine requires specialized routing. Our export framework utilizes consolidated air-freight hubs in Warsaw (Poland), Constanța (Romania), or Budapest (Hungary), backed by verified bonded overland road freight directly clearing through Ukrainian regional customs terminals (Kyiv Central, Lviv Western Customs, Dnipro), avoiding coastal logistical bottlenecks.
Manufacturing Excellence
Why Ukrainian Industrial Buyers Trust Zunex Quartz
Headquartered in Donghai County, China — the world-renowned "Crystal Capital" — we combine direct raw mineral access with state-of-the-art CNC processing and laser precision finishing.
Raw Purity Source Advantage
Located at the epicenter of high-purity natural silica deposits. Our raw quartz crystal sand is processed to achieve 99.99% SiO2 purity with total metallic impurities below 20 ppm, ensuring zero melt coloration, optimal thermal shock resistance, and zero devitrification at continuous 1100°C.
Laser Finishing & Micro-CNC
Equipped with specialized CO2 laser cutting, ultrasonic micro-hole drilling (Ø down to 0.3 mm), precision surface slotting, and multi-axis CNC glass machining. We maintain hole spacing and edge step tolerances within ±0.02 mm without micro-cracks or chipped edges.
100% Quality & Defect Inspection
Each production batch undergoes full dimensional verification (laser micrometer), polariscope stress analysis to eliminate residual strain, and spectrophotometric transmission verification. Full inspection reports and 3.1 material certificates accompany every delivery.
Export-Proof Shock Crate Packaging
Shipping precision glass to Ukraine requires zero-risk crating. Every tube, plate, and crucible is sealed in custom vacuum poly-wrapping, encased in high-density multi-density EPE molded foam, and bolted into reinforced, non-fumigation plywood cases tested against drop and vibration shocks.
Engineered Execution
Five-Stage Precision Manufacturing Workflow
Clear, transparent production engineering from technical CAD validation to localized logistics fulfillment.
01
CAD & Drawing Review
Submit PDF, DWG, DXF, or STEP files. Our senior glass engineers evaluate wall ratios, thermal stress profiles, and machine toolpaths.
02
Material & Cost Proposal
Official quotation within 2 hours specifying silica grade (JGS1/2/3), lead times, and transparent Incoterms (CPT, DAP, or FCA Europe).
03
Thermal & CNC Forming
Hot hydrogen-oxygen flame bending, automated flanging, laser drilling, and fine optical mechanical polishing to specified Ra values.
04
Annealing & Stress Relief
All welded, bent, and machined quartz items undergo 1150°C electric furnace annealing to release internal stresses and prevent catastrophic failure.
05
Crated Dispatch to Ukraine
Shock-damped protective packaging with tracking, documentation, and expedited transit through European logistics corridors directly to your facility.
Procurement Intelligence
Frequently Asked Questions by Ukrainian Buyers
Clear, definitive answers to questions on logistics routes, payment terms, customs classification, and custom manufacturing tolerances.
What are the standard shipping routes and delivery lead times to Ukraine?
Due to current airspace and Black Sea marine constraints, shipments to Ukraine operate via reliable hybrid intermodal corridors. Urgent prototyping orders (1-50 kg) are shipped via express air freight (DHL, FedEx, or specialized air cargo) to European hubs in Warsaw, Katowice (Poland), or Budapest (Hungary), followed by bonded overland transit directly to Kyiv, Lviv, or regional customs terminals, taking 7 to 12 business days door-to-door. Heavier industrial shipments (quartz furnace tubes, large crucibles, bulk orders) are dispatched by consolidated ocean freight to European gateways (Hamburg, Rotterdam, or Constanța) and delivered via sealed road transport within 30 to 45 days.
Which HS Codes (Customs Codes) and export documents are provided for Ukrainian customs clearance?
We supply complete documentation complying with State Customs Service of Ukraine requirements. Standard Harmonized System (HS) classifications include:
- HS 7002.31.00.00: Tubes of fused quartz or other fused silica.
- HS 7017.10.00.00: Laboratory, hygienic or pharmaceutical glassware of fused quartz/silica.
- HS 7006.00.90.00: Glass sheets, curved, bevelled, engraved, drilled, or worked.
What happens if fragile quartz components arrive damaged or broken in transit?
We maintain an industry-leading zero-breakage track record due to our engineered EPE cushioning and non-fumigation wooden crating. However, to guarantee complete operational security for our Ukrainian partners, all consignments are backed by a 100% Free Replacement Guarantee. If any item arrives damaged or fractured, simply photograph the damaged piece and outer crate within 48 hours of customs release, and our factory will prioritize immediate re-fabrication and dispatch via expedited courier at our expense.
Can Zunex manufacture custom replacement tubes for legacy Soviet-era or European industrial machinery?
Yes. Many industrial enterprises in Ukraine utilize thermal or analytical equipment that originally relied on legacy specifications or Western European brands (e.g., Heraeus, Saint-Gobain, Nabertherm, Carbolite). We can precisely reverse-engineer or manufacture exact dimensional drop-in replacements from physical samples, worn components, or original technical drawings, matching or exceeding thermal endurance up to 1300°C while achieving cost savings of 30% to 50%.
What payment terms and currency options are supported for Ukrainian corporate transactions?
We accommodate corporate international wire transfers via international SWIFT banking channels in major global currencies, including EUR (€), USD ($), and CNY (¥). Standard payment terms for custom fabrication orders are 30% to 50% T/T deposit upon engineering drawing confirmation, with the remaining balance due upon photographic inspection approval prior to dispatch. For verified repeat institutional buyers, state universities, and industrial procurement contracts, we offer flexible phased commercial terms.
What are the achievable manufacturing tolerances for high-pressure tubes and laser-drilled plates?
Our CNC machining centers, precision diamond saws, and laser processing allow tight tolerances across all parameters: Outer Diameter (OD) and Inner Diameter (ID) can be maintained to ±0.05 mm (or ±0.02 mm for ground and polished tubes); wall thickness uniformity within ±0.05 mm; length tolerances within ±0.1 mm; hole diameter and hole pitch positional tolerances within ±0.02 mm; and surface flatness down to λ/4 (≤ 150 nm) for precision optical windows.
Request Custom Quartz Fabrication for Your Ukrainian Facility
Send your engineering drawings (PDF, DWG, STEP) or dimensional parameters. Our specialized technical engineering team will review manufacturability, confirm silica purity grades, and return a formal commercial proposal within 2 hours.