What is the difference between JGS1, JGS2 and JGS3 quartz?

JGS1 is synthetic fused silica with high deep-UV transmission (about 185–2500 nm) for UV optics and lasers. JGS2 is flame-fused quartz transmitting roughly 220–2500 nm, a cost-effective choice for UV lamps and sight windows. JGS3 is electrically fused quartz with good infrared transmission up to about 3500 nm.

What temperature can fused quartz tubes withstand?

Transparent fused quartz is typically used continuously up to about 1100 °C and for short periods up to about 1300 °C. Its softening point is around 1730 °C and its very low thermal expansion gives excellent thermal-shock resistance.

Can you manufacture quartz parts from my drawing?

Yes. We cut, drill, slot, grind, polish, bend, weld and seal quartz to customer drawings in PDF, DWG or STEP format, including flanges, multi-bore flow tubes, wafer boats, cuvettes and microplates.

What is the minimum order quantity?

Many standard items and prototypes can be ordered from 1 to 5 pieces. Volume pricing and lead time are confirmed after drawing review.

How is quality controlled?

Every batch is annealed to relieve internal stress, checked on a polarization stress tester, and inspected for dimensions and surface quality before packing. Our factory has passed an onsite assessment by SGS Group.

How are fragile quartz products packed for export?

Parts are individually wrapped, cushioned with foam and shipped in reinforced cartons or wooden cases suitable for air, sea and express freight.

SGS Verified · Custom Manufacturer · Lianyungang, China

CE Certified Fused Silica Wafer Manufacturers & Exporters for Liepāja

Precision-engineered fused quartz solutions, from standard components to bespoke designs, meeting the rigorous demands of the Liepāja market and beyond.

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0+Years in Quartz Manufacturing

0%SiO₂ Purity

0 +Custom Orders Shipped

0 pcMOQ on many items

Lovri Quartz: Precision Fused Silica for Global Markets

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Certified Quality, Global Reach for Liepāja Buyers

Onsite assessed by SGS

Verified Supplier

CE-marked items

RoHSRoHS-compliant materials

Serving Liepāja and global markets with streamlined export services.

< img src="/source_global/a060f7204daebf9445a599b3484 b2cec/es.png" alt="Spain" title="Spain" loading="lazy"> Netherlands

< img src="/source_global/9f8e43a8cb09d5e47ca377c12e4cc1 8f/kr.png" alt="South Korea" title="South Korea" loading="lazy"> India

Our Manufacturing Hub

A Deep Dive into Our Fused Quartz Capabilities

Lovri Quartz Products Co., Ltd. is a dedicated fused quartz glass manufacturer, strategically located in Lianyungang , Jiangsu, a region renowned for its rich silica resources and specialized glassworking expertise. This proximity allows us to maintain unparalleled control over our entire production lifecycle.

< p>Our comprehensive in-house operations encompass everything from the meticulous selection and processing of raw quartz materials to the precise drawing of tubes, controlled annealing, intricate sealing, advanced vacuum processing, and high-precision CNC machining. By integrating all these stages within our facilities, we ensure stringent adherence to your specifications, rapid response to design adjustments , and complete traceability for every batch.

1 4,271 m²State-of-the-art production facility

12+ criticalIn-house manufacturing processes

ODM / OEMTailored solutions for unique needs

Rigorous testingEnsuring zero-defect products

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Lovri fused quartz glass factory workshop in Lianyungang
, Jiangsu

Onsite verified by SGS GroupAssessment date: 2025.12.28

Quartz glass processing workshop — Precision Machining

Quartz product finishing area — Quality Control Lab

Quartz tube drawing machine — Tube Extrusion

Quartz annealing furnace — Annealing Process

CNC center for quartz machining — Advanced CNC Machining

Quartz tube sealing machine — Custom Sealing & Bending

Quartz test and measuring machine — Dimensional Verification

Export packaging line for quartz products — Secure Export Packaging

Our End-to-End Manufacturing

The Journey of Fused Quartz Production

From raw material to a precisely engineered component, our integrated process guarantees quality and consistency for demanding applications in Liepāja and worldwide. Scroll to see each step.

STEP 01

Raw Material Preparation

Selected natural quartz lumps are precisely sized and visually inspected for purity.

STEP 02

Pulverizing & Sizing

Lumps are meticulously crushed into uniform silica sand, ensuring consistent melt properties.

STEP 03

Fine Screening

Sand undergoes rigorous screening to achieve precise particle distribution, critical for optical clarity.

STEP 04

Acid Pickling

Specialized acid treatment removes metallic impurities, achieving ≥99.99% SiO₂ purity.

< span class="aicc_step-no">STEP 05

Tube & Rod Drawing

Molten quartz is precisely drawn into tubes and rods to exact diameter and wall thickness specifications.

STEP 06

Controlled Annealing

Stress-relief annealing ensures structural integrity and thermal shock resistance.

STEP 0 7

Custom End Forming

Precision forming of round, flat, or domed ends to meet application needs.

STEP 08

Advanced Sealing & Welding

Seamless fusion of flanges, branches, and complex joints for robust assemblies.

STEP 09

Vacuum Processing

Essential for high-vacuum applications, ensuring purity and performance.

STEP 10

Precision CNC Machining

Drilling, milling, grinding, and polishing to exact drawing specifications.

STEP 11

Quality Assurance

Comprehensive dimensional, visual, and stress testing before dispatch.

STEP 12

Global Export Packaging

Secure, robust packaging ensuring safe transit to Liepāja and beyond.

Your Advantage with Lovri Quartz < h2 class="aicc_section_title" id="whyTitle">The Information Gain You Need

In the competitive Liepāja market, understanding product quality and supplier reliability is paramount. We provide the E-E-A-T backing you can trust.

Polarization stress tester for quartz glass inspection

Unwavering Commitment to Quality Control

We understand that microscopic imperfections can lead to significant failures. Our rigorous quality assurance process includes advanced polarization stress testing after annealing to detect and eliminate internal stresses, ensuring the longevity and reliability of your fused quartz components.

Polarization stress testing for every batch.
Dimensional accuracy verified to ±0.05mm tolerance.
Surface finish polished to <0.02μm Ra.

Quartz glass laboratory and engineering support

Expert Engineering & Design Collaboration

Our seasoned team of engineers possesses deep expertise in fused quartz applications , from semiconductor processing to advanced optics. We offer comprehensive technical support, assisting you in selecting the optimal quartz grade (JGS1, JGS2, J GS3, opaque) and material properties that precisely match your operational requirements, thereby enhancing performance and reducing costs.

DFM (Design for Manufacturability) reviews.
Material selection guidance based on thermal, optical, and chemical needs.

Raw quartz pulverizer machine at source factory

Vertical Integration for Superior Purity

By controlling the entire process from raw quartz pulverization and acid pickling to final product manufacturing, we eliminate external dependencies and ensure the highest levels of purity (≥99.99% SiO₂). This vertical integration is crucial for applications demanding extreme cleanliness, such as semiconductor fabrication and UV spectroscopy.

Full traceability from raw material to finished product.
Reduced risk of contamination in critical processes.
Cost efficiencies passed on to our clients.

Export packing machine for fragile quartz parts

Reliable Global Logistics for Liepāja

We are adept at handling international shipments, ensuring that your fused quartz products arrive safely and efficiently in Liepāja . Our comprehensive export documentation and secure packaging practices are designed to meet the stringent requirements of global trade, minimizing transit risks and customs delays.

CE and RoHS documentation readily available.
Customs clearance support.
Robust, multi-layer protective packaging.

SGS Onsite Assessment

Industry-leading verification of our manufacturing processes.

Verified Supplier Status

Confirmed operational integrity and reliability.

CE Marking

Compliance for specific product lines for European markets.

RoHS

RoHS Compliant

Adherence to global environmental standards.

Serving Liepāja's Key Industries

Fusing Quartz for Diverse Applications

Fused quartz's unique combination of thermal stability, chemical inertness, and optical clarity makes it indispensable across a spectrum of high-tech industries. Discover how our products empower innovation.

Semiconductor Manufacturing

High-purity wafer boats, diffusion tubes, and precision fixtures essential for advanced chip fabrication.

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Photovoltaic Industry

High-transmittance quartz components for solar cell manufacturing and advanced energy solutions.

Laser Systems & Optics

Precision-machined flow tubes, optics, and laser cavities for medical, industrial, and research lasers.

UV Curing & Sterilization

JGS1 grade UV-transparent quartz plates and tubes for germ icidal lamps and industrial UV processes.

Laboratory & Research

High-purity flow cells, microplates, and specialized apparatus for advanced analytical and experimental work.

Ozone Generation

Specialized quartz sleeves and tubes designed for efficient ozone generation in water and air treatment.

Infrared Heating Systems

Opaque and translucent quartz tubes optimized for IR emitters and heating elements.

Industrial Furnaces

Durable, high-temperature furnace tubes and components for various industrial heating processes.

Our Product Portfolio

Comprehensive Fused Quartz Solutions

Explore our extensive range of high-purity fused quartz products, meticulously manufactured to meet the exacting standards of Liepāja's leading industries. Filter by category for detailed specifications.

TUBE

High Precision Clear Quartz Glass Tubing

High-Precision Clear Quartz Tubing

OD 10mm/14mm/20mm · Heat resistant · Semiconductor Cleaning Pipeline

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TUBE

Threaded Reaction Tube

99.99% SiO₂ · Side arm custom · Lab reaction vessel

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TUBE

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Triple Bore Quartz Laser Flow Tube

200 Mesh · Medical & industrial lasers · GentleYag/GentleMax compatible

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TUBE

518 Best Quality High Transmittance Fused Quartz 99.9
9% Silica Content ROHS Certified Clear Photovoltaic Cell Sintering Furnace

PV Sintering Furnace Quartz Tube

99.99% SiO₂ · High transmittance · ROHS Certified

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TUBE

Opaque Quartz Heating Tube

Milky white · Infrared radiation · High temperature resistance

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PLATE

High-Purity Polishing Quartz Plate/ Sheet

200 Mesh · 99.99% Silica Content · ROHS Certified · Optical Grade

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PLATE

Transparent Fused Quartz Sheet

High Light Transmittance · Heat Resistance · Customizable Digestion Tube

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PLATE

JGS1 UV transparent
fused quartz glass sheet

JGS 1 UV-Grade Fused Quartz Sheet

Deep-UV transmission · 99.99% SiO ₂ · Annealed · Laser plates

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PLATE

Double-Side Polished Quartz Sheet

Corrosion resistant · High light transmittance · Custom sizes

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PLATE

Ultra-Thin Quartz Sheet 0.1–0.5 mm

Precision thickness · Laser & ; optical use · 99.99% silica

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< div class="aicc_card-img">ROD Fused quartz glass capillary rod 1mm to 10mm

Fused Quartz Capillary Rod 1–10 mm

99.99% silica · Semiconductor & chemical use · Cut to length

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ROD

Translucent high purity fused quartz rod

Translucent High-Purity Quartz Rod

≈90% transmittance · Semiconductor grade · RoHS

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ROD

Square Quartz Light-Guide Rod

Polished faces · Light guide blocks · Semiconductor tools

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ROD

Square round and semi circular fused quartz rods

Square / Round / Semi-Circular Rod

Multiple profiles · Capillary options · High purity

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CNC

Triple -Bore Laser Flow Tube

C-shape design · Welded & bent · Medical / industrial lasers

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CNC

High precision CNC machined fused silica parts

Precision CNC Fused Silica Parts

Drilled, slotted & polished · Optical / semiconductor use

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CNC

Fused Quartz 96-Well Microplate

< p class="aicc_card-spec">High UV transmittance · Heat sterilizable · Precision drilled

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CNC

Threaded Fused Quartz Pipe

Male / female thread · Inner & outer threads · Custom length

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Your Technical Advantage

Understanding Fused Quartz Properties for Liepāja

Gain critical insights into the material science and application-specific benefits of fused quartz. Empower your procurement and engineering teams with essential knowledge.

Key Properties of High-Purity Fused Quartz
SiO₂ Content	≥ 99.99%
Density	~2.20 g/cm³
Thermal Expansion	~0.55 x 10⁻⁶ /°C (Excellent Thermal Shock Resistance)
Softening Point	~1730 °C
Continuous Operating Temp.	Up to 1100 °C
Chemical Inertness	Resistant to most acids (excluding HF)
UV Transmission	Excellent (JGS1 grade transmits down to 185 nm)

< th scope="col">Key Characteristics

Fused Quartz Grade Selection for Your Needs
Grade	Typical Applications in Liepāja
JGS1	Superior UV & Deep-UV Transmission	Semiconductor lith ography, UV sterilization, laser optics
JGS2	Good UV & ; Visible Light Transmission	General optical components, UV lamps, sight glasses
JGS3	Excellent IR Transmission	Infrared heaters, high-temperature viewports
Opaque / Milky	High Infrared Reflectivity & Diffusion	IR heating elements, furnace linings , heat shields

Note: These values represent typical properties. Specific performance may vary based on grade and manufacturing process. We provide detailed datasheets upon request.

Frequently Asked Questions for Buyers

What makes fused quartz ideal for demanding Liepāja industries?

Fused quartz offers an unparalleled combination of extreme temperature resistance, exceptional chemical inertness, very low thermal expansion, and broad optical transparency across UV, visible, and IR spectra. These properties make it the material of choice for critical applications in semiconductor manufacturing, advanced optics, and high-temperature industrial processes prevalent in markets like Liepāja.

How does Lovri Quartz ensure CE compliance for products exported to Europe?

For applicable products, we adhere to the necessary directives and standards to ensure CE marking. This involves rigorous testing and documentation, confirming that our quartz components meet the safety, health, and environmental protection requirements for products sold within the European Economic Area, facilitating smooth customs clearance for buyers in regions like Liepāja.

Can you produce custom fused silica parts based on specific application needs?

< div class="ans">Absolutely. Our core strength lies in custom manufacturing. You can provide us with detailed drawings (PDF, DWG, STEP), or even a conceptual sketch. Our engineering team will collaborate with you to optimize the design for manufacturability, recommend the most suitable quartz grade, and deliver precision-engineered parts tailored to your exact specifications and application.

What is the typical lead time for custom quartz orders?

Lead times vary depending on complexity and volume. However, due to our integrated manufacturing process, we strive for efficiency. Standard prototypes can often be completed within 2-4 weeks, while larger production runs typically range from 4-8 weeks. We provide accurate lead time estimates with each quotation.

How is the high purity of your fused quartz maintained throughout the manufacturing process?

Purity is paramount. We achieve ≥99.99% SiO₂ through meticulous raw material selection, advanced acid pickling techniques to remove metallic contaminants, and a closed-loop manufacturing environment. Our processes are designed to minimize any potential contamination from the initial melt to the final inspection, ensuring suitability for the most sensitive applications.

What packaging solutions do you offer for international shipments to Liepāja?

We use a multi-layered approach to protect your valuable quartz products. This typically includes individual wrapping, high-density foam cushioning, and robust outer packaging such as reinforced cartons or custom-built wooden crates, designed to withstand the rigors of international transit via air, sea, or express freight.

Ready to Procure?

Connect with Lovri Quartz for Your Liepāja Project

Whether you require standard components or a fully custom-engineered fused silica solution, our team is ready to assist. Share your project details, specifications, and quantity requirements for a prompt, competitive quotation.

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