What sizes of fused quartz tube can VEZLO produce?

Standard transparent fused quartz tubes are produced from 2 mm to 500 mm outer diameter. A 520 mm large-diameter high-purity quartz tube has also been developed for semiconductor diffusion and oxidation furnaces. Wall thickness, length and end finishing are made to drawing.

What is the difference between fused quartz and fused silica?

Fused quartz is made by melting high-purity natural quartz crystal or sand, while synthetic fused silica is produced from silicon-based precursors such as SiCl4. Synthetic silica offers higher deep-UV transmission, while fused quartz provides excellent thermal stability and purity at a lower cost for lamps, furnaces, labware and most industrial uses.

Do you accept OEM and ODM custom quartz parts?

Yes. VEZLO manufactures to customer drawings, including tubes with closed or flared ends, ground joints, flanges, quartz boats, cleaning tanks, crucibles, plates, windows and rods, as well as private-label packaging.

How fast does VEZLO respond to technical requests?

The average response time is within 2 hours, and around 50% of buyers place repeat orders. Requirements can be sent to info@vezloquartz.com or via the contact page.

How are fragile quartz products packed for export?

Quartz parts are typically protected individually with foam or pearl cotton, then packed in reinforced cartons or fumigation-free plywood cases suitable for sea, air and express shipping.

Custom OEM Fused Quartz Factories & Exporters Serving Ireland

Q: What is an ozone-free quartz tube?

An ozone-free quartz tube is doped to absorb the 185 nm ultraviolet line that converts oxygen into ozone, while still transmitting the 254 nm germicidal wavelength. It is widely used for UV sterilization lamps in water, air and surface disinfection where ozone is not wanted.

Engineering-grade synthetic silica and high-purity natural fused quartz glassware: direct factory supply chain serving Dublin, Cork, Shannon, and Galway industrial sectors.

2–500 mm

Outer Diameter Tube Range

≤20 ppm

Metallic Impurity In Raw Sand

≤2 Hours

Engineering Response Window

50 %

Global Client Reorder Rate

Precision Components

Featured OEM Fused Quartz & Silica Solutions

Browse 8 high-performance fused quartz tubes, windows, and thermal plates engineered to withstand continuous 1,100°C service, extreme acid baths, and deep-UV exposure across advanced Irish industrial facilities.

Quartz Tube for Ozone Generator High Purity Fused Silica Ozone Free

Doped quartz blocking 185 nm spectrum while maintaining 254 nm germicidal output for ultra-clean municipal water and pharma sanitation.

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Quartz Fireplace Viewing Glass Plate Heat Resistant Fused Silica

Near-zero thermal expansion coefficient (5.5 × 10‾⁷ /°C) ensuring shockproof optical clarity up to 1,200°C in industrial thermal viewports.

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Quartz Viewport Glass Plate Vacuum Chamber Fused Silica Custom Size

Hermetically sealed, ultra-flat discs tailored for UHV chamber observation, plasma etching, and laser-assisted thin-film monitoring.

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Quartz Plate for Laser Protection Window Fused Silica UV Grade

High laser damage threshold (LDT) substrate delivering >92% uncoated optical transmission across UV, visible, and NIR bands.

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Rectangular Quartz Plate Fused Silica Clear Precision Cut Custom Size

CNC-machined, optically polished parallel plates engineered for medical diagnostic sensors, fluidic cells, and optical inspection stages.

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Large Diameter Clear Quartz Borosilicate Glass Tube round Fused Silica

Heavy-wall tube cylinders up to 500 mm outer diameter, suitable for horizontal furnace liners, chemical reactors, and gas collection manifolds.

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Quartz Plate with Center Hole Fused Silica Clear Polished Custom Size

Custom ultrasonic-drilled flange substrates and gas ring diffusers designed for semiconductor chamber lids and plasma showerheads.

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Quartz Glass Plate 0.5mm 1mm 2mm Thickness Fused Silica Clear Custom Size

Ultra-thin fused silica wafers down to 0.5 mm featuring λ/4 wave surface flatness for micro-optics, beam splitters, and biomedical coverslips.

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Engineering Deep Dive

Critical Material Properties for High-Reliability Operations

Understanding why natural fused quartz and synthetic fused silica (SiO&sub2; ≥ 99.99%) remain the uncompromising substrate choice over borosilicate or soda-lime glass in Irish technological sectors.

Physical & Chemical Metric	Typical Engineering Value	Impact on Irish Fab & Laboratory Operations
Purity Level (SiO&sub2;)	≥ 99.99% (Synthetic > 99.999%)	Zero ionic leaching into high-purity pharma solvents and ultra-low wafer cross-contamination during LPCVD/diffusion cycles.
Coefficient of Thermal Expansion (CTE)	5.5 × 10‾⁷ / °C (20°C to 320°C)	Withstands instant thermal transitions from 1,100°C quenching into cold water without micro-fracturing or dimensional creep.
Strain & Annealing Points	Strain: 1,120°C \| Anneal: 1,215°C	Allows sustained furnace operations at 1,100°C; softening point peaks at 1,683°C for specialized flame-working tasks.
Optical Transmission Range	190 nm (Deep UV) to 3,500 nm (NIR)	Essential for spectrophotometer flow cells, high-energy Nd:YAG / Fiber laser protective windows, and UV curing arrays.
Dielectric Strength	25–40 kV/mm (at 20°C)	Superior electrical isolation in RF plasma generators, ozone discharge tubes, and high-voltage vacuum instrumentation.
Chemical Resistance Index	Completely inert to Aqua Regia, HCl, HNO&sub3;	Only hydrofluoric acid (HF) and hot phosphoric acid (>150°C) degrade the surface lattice; ideal for acid etching tanks.

Localized Industrial Integration

Fused Quartz Applications Across Ireland's Leading Sectors

Direct factory customization resolving supply chain friction points across the Republic of Ireland's technological corridors.

Semiconductor Fabrication

Serving leading front-end wafer fabrication facilities in Leixlip, Dublin, and Cork. We engineer 520 mm large-diameter furnace diffusion process tubes, quartz boats, wafer transport paddles, and ultra-pure quartz bell jars. Our low-hydroxyl (OH < 5 ppm) synthetic formulations eliminate wafer slip and thermal sagging during 12-inch wafer processing runs.

Biopharma & API Synthesis

Ireland produces over 50% of the world's top active pharmaceutical ingredients. We manufacture customized quartz distillation vessels, flow-through reaction tubes, UV reactor sleeves for water disinfection, and acid-resistant cleaning tanks. Zero trace element migration guarantees strict adherence to HPRA validation and international cGMP manufacturing standards.

MedTech & Photonics Centers

Concentrated in Galway and Shannon, Ireland's medical device cluster utilizes our custom laser delivery windows, optically polished cylindrical rods, and microscopic quartz slides. Our JGS1-grade synthetic silica components provide 93% internal transmittance down to 200 nm, vital for laser catheter cutting and endoscopic instrumentation.

Market Dynamics

Procurement Trends Across the Irish Industry

Evaluating the operational vectors reshaping how Irish engineering leaders source raw quartz and finished quartzware.

1. Diversification Beyond High-Cost EU Distributors

Irish manufacturers have historically paid substantial markups (often exceeding 200–350%) when sourcing fused quartz through third-party continental and UK trading middlemen. The prevailing trend across multinational procurement hubs in Ireland focuses on bypassing distributor margins by dealing directly with OEM source factories in Donghai, China—securing direct factory batch test reports (COA) and engineering customization directly from the drawing board.

2. Stringent Traceability Under EU Green Directives

With Irish facilities adhering strictly to ISO 14001, RoHS, and EU REACH regulations, procurement teams mandate full purity declarations for all contact glassware. Sourcing from VEZLO ensures full traceability back to refined quartz sands containing ≤20 ppm total metallic impurities, avoiding batch rejection during critical environmental and audit evaluations.

Factory Credentials

Why Irish Technical Buyers Partner with VEZLO Quartz

Deep technical heritage, comprehensive in-house cold and hot flame-working workshops, and global export reliability.

Cluster Advantage in Donghai

Operating a modern 33,000 m² production site located in China's quartz capital. Controlling raw quartz sand purification down to ≤20 ppm metallic impurities eliminates structural bubbles, hairline striations, and devitrification hazards prior to melting.

Provincial & National R&D Recognition

Our 320 mm high-purity quartz tube development was completed under the prestigious Jiangsu Provincial Science & Technology Support Project. Our 520 mm large-diameter diffusion furnace tube has officially passed preliminary national review for specialized high-tech products.

Customs-Ready Packing for Ireland

Every component is isolated in custom pearl cotton, sealed in moisture-proof vacuum barriers, and housed in heavy-duty, fumigation-free wooden crates designed to withstand air transit to Dublin Airport (DUB) or sea freight container consolidation via Dublin Port.

Buyer Knowledge Base

Frequently Asked Questions by Irish Procurement Teams

Direct engineering clarity regarding customs declarations, dimensional tolerances, and optical classifications.

What are the key technical distinctions between natural fused quartz and synthetic fused silica? +

Fused quartz is melted from natural, high-purity crystalline quartz sands. It offers exceptional mechanical strength, heat resistance up to 1,100°C, and superior price-to-performance efficiency for furnace tubes, viewports, and general labware. Synthetic fused silica (such as JGS1) is synthesized via chemical vapor deposition of silicon halides (SiCl&sub4;). It achieves virtually 100% amorphous SiO&sub2; purity with zero bubble inclusions, no fluorescence under UV, and transmittances extending below 200 nm for deep-UV excimer laser applications.

How does VEZLO support Irish companies with customs clearance under Revenue Irish Tax and Customs? +

We provide full documentation sets for Irish import declarations, including commercial invoices carrying accurate HS Codes (such as 7002.31 for fused quartz tubes and 7002.39 for quartz plates), verified packing lists, Certificates of Origin (COO), and formal Material Inspection Certificates (COA). Shipments can be arranged under DAP (Delivered at Place) or DDP (Delivered Duty Paid) to your manufacturing plant in Dublin, Cork, or Galway.

What dimensional tolerances can you hold on customized CNC quartz plates and flanges? +

Using advanced CNC machining, ultrasonic milling, and laser cutting, we routinely achieve outer diameter and length tolerances of ±0.05 mm, thickness tolerances down to ±0.02 mm, and surface parallelism within ≤30 arc seconds. For optical grade windows, surface quality reaches 40/20 or 20/10 Scratch/Dig with λ/4 flatness.

What is an ozone-free quartz tube and why is it preferred in cleanroom sanitization? +

Standard clear fused quartz transmits ultraviolet radiation down to 180 nm, which ionizes surrounding atmospheric oxygen into toxic ozone gas (O&sub3;). Ozone-free quartz tubes are strategically doped with titanium during the melting process. This lattice doping creates an optical cutoff that completely absorbs the 185 nm wavelength while permitting high transmission (>85%) of the germicidal 254 nm wavelength, enabling safe UV sterilization inside human-occupied medical facilities and pharmaceutical cleanrooms.

What is your lead time for bespoke quartz prototypes versus batch export orders? +

Engineering evaluations and formal quotation reviews are dispatched within 2 hours of drawing receipt. Prototype or bespoke proof-of-concept parts typically require 5 to 9 business days for tooling, flame-working, and polishing. Volume production orders for semiconductor or industrial equipment components are dispatched within 15 to 20 days, followed by direct express air courier (3–5 days to Ireland) or sea container consolidation.

Accelerate Your Quartz Sourcing with Factory-Direct Engineering

Send your CAD drawings, STEP files, or technical RFQ directly to our chief processing engineers. We guarantee swift DFM analysis and competitive OEM pricing tailored for Irish industrial leaders.

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