Ultra-Pure
Quartz Glass
Since 2005 · Lianyungang, Jiangsu, China
Ultimate purity illuminates the future of technology.
Illuminating the Future with 99.99% SiO2 Purity
Leading manufacturer of high-purity quartz glass for semiconductor manufacturing, optical fiber production, and advanced laboratory applications. ISO 9001 certified with over 20 years of expertise in precision quartz fabrication.
Pioneering Excellence in Quartz Glass Manufacturing
Established in 2005 in Lianyungang, Jiangsu Province, FGQuartz has emerged as a leading manufacturer of ultra-pure quartz glass products in China. With over two decades of expertise, we specialize in producing high-precision quartz components that meet the stringent requirements of semiconductor fabrication, optical fiber manufacturing, and advanced scientific research.
Our state-of-the-art manufacturing facility spans over 15,000 square meters and is equipped with advanced fusion, forming, and precision machining equipment. We maintain ISO 9001:2015 certification and adhere to international quality standards throughout our production processes. Every product undergoes rigorous quality control testing to ensure it meets or exceeds customer specifications.
At FGQuartz, we understand that material purity is paramount in high-tech applications. Our quartz glass achieves 99.99% SiO2 purity with minimal metallic impurities (typically <20 ppm total), making it ideal for applications where contamination must be eliminated. We utilize premium raw materials and employ advanced purification techniques to ensure consistent, reliable performance.
Our product portfolio includes quartz tubes (ranging from 5mm to 500mm diameter), quartz rods, quartz plates, quartz boats, quartz crucibles, and custom-fabricated components. We serve clients across semiconductor manufacturing, optical communications, solar energy, chemical processing, and laboratory equipment sectors worldwide.
Our Products
Comprehensive Quartz Glass Solutions
From standard components to custom-engineered solutions, our extensive product line serves diverse industries with precision-manufactured quartz glass that delivers exceptional performance and reliability.
Quartz Tubes
High-precision quartz tubes available in diameters from 5mm to 500mm with wall thicknesses from 1mm to 10mm. Manufactured using advanced fusion techniques to ensure uniform wall thickness and exceptional concentricity. Ideal for semiconductor diffusion furnaces, CVD reactors, and high-temperature processing equipment.
- Diameter Range: 5mm – 500mm
- Purity: 99.99% SiO2
- Max Temperature: 1200°C continuous
- Applications: Semiconductor, CVD, Furnaces
Quartz Rods
Solid quartz rods manufactured from premium fused silica with diameters ranging from 3mm to 300mm. Precision-ground to tight tolerances with excellent straightness and surface finish. Used in optical fiber preform manufacturing, stirring rods, support structures, and custom component fabrication.
- Diameter Range: 3mm – 300mm
- Tolerance: ±0.1mm precision
- Surface Finish: Ra < 0.4μm
- Applications: Optical Fiber, Stirrers, Supports
Quartz Plates
Precision-polished quartz plates available in thicknesses from 1mm to 50mm with custom dimensions up to 1000mm × 1000mm. Optical-grade surface finish with excellent flatness and parallelism. Perfect for optical windows, substrates, viewports, and high-temperature observation applications.
- Thickness: 1mm – 50mm
- Max Size: 1000mm × 1000mm
- Flatness: λ/4 @ 632.8nm
- Applications: Optics, Windows, Substrates
Quartz Boats
Semiconductor-grade quartz boats designed for wafer processing in diffusion and oxidation furnaces. Available in standard and custom configurations to accommodate various wafer sizes (2-inch to 12-inch). Manufactured with precise slot spacing and excellent thermal uniformity for consistent wafer processing.
- Wafer Sizes: 2″ to 12″ compatible
- Slot Tolerance: ±0.1mm
- Thermal Uniformity: ±2°C
- Applications: Diffusion, Oxidation, Annealing
Quartz Crucibles
High-purity quartz crucibles for laboratory and industrial applications requiring extreme chemical resistance and thermal stability. Available in capacities from 10ml to 10 liters with various shapes (cylindrical, conical, flat-bottom). Ideal for high-temperature melting, chemical analysis, and material synthesis.
- Capacity: 10ml – 50L
- Shapes: Cylindrical, Conical, Flat-bottom
- Chemical Resistance: Excellent
- Applications: Melting, Analysis, Synthesis
Custom Components
Custom-engineered quartz solutions tailored to your specific requirements. Our experienced engineering team collaborates with clients to design and manufacture complex geometries, specialized coatings, and unique assemblies. From prototyping to production, we deliver precision-crafted components that meet exact specifications.
- Custom Geometries & Dimensions
- Specialized Coatings Available
- Prototyping to Production
- Applications: Specialized Industrial Needs
Technical Excellence
Superior Material Properties
Our ultra-pure quartz glass delivers exceptional performance across critical parameters, ensuring reliability in the most demanding applications.
Thermal Properties
Optical Properties
Mechanical Properties
Chemical Properties
Competitive Advantages
Why Choose FGQuartz
Two decades of expertise, cutting-edge manufacturing capabilities, and unwavering commitment to quality make us the preferred partner for high-purity quartz glass solutions worldwide.
Uncompromising Quality
ISO 9001:2015 certified manufacturing processes ensure every product meets or exceeds international quality standards. Our comprehensive quality control system includes raw material inspection, in-process monitoring, and final product testing using advanced analytical equipment including ICP-MS for impurity analysis and optical spectrometry for transmission verification.
We maintain detailed traceability records for every batch and provide certificates of analysis documenting purity, dimensions, and performance characteristics. Our quality assurance team conducts regular audits to ensure continuous improvement and compliance with customer specifications.
Advanced Manufacturing
Our state-of-the-art production facility features advanced fusion furnaces, precision CNC machining centers, and automated polishing systems. We utilize both flame fusion and electric fusion techniques to produce quartz glass with optimal properties for specific applications. Our equipment enables us to manufacture components with tight tolerances (±0.1mm) and superior surface finishes (Ra < 0.4μm).
Continuous investment in technology keeps us at the forefront of quartz glass manufacturing innovation. Our engineering team regularly develops new processes and techniques to improve product performance and expand our capabilities.
Uncompromising Quality
Our experienced technical support team works closely with customers from initial consultation through product delivery and beyond. We provide application engineering assistance, material selection guidance, and custom design services to ensure optimal solutions for your specific requirements. Fast response times and clear communication keep projects on track.
We maintain strategic inventory of common products for quick delivery (7-14 days for standard items) and offer expedited production for urgent requirements. Our global logistics network ensures reliable, timely delivery worldwide with proper packaging to prevent damage during transit.
FAQ
Frequently Asked Questions
Get answers to common questions about our quartz glass products, manufacturing processes, and services.
Quartz glass offers superior performance: higher temperature resistance (1680°C vs 500°C), better thermal shock resistance, excellent UV transmission, lower thermal expansion (0.5 vs 3.3 ×10⁻⁶/K), and higher purity (99.99% SiO2). While more expensive, quartz glass is essential for high-temperature and high-purity applications where borosilicate glass cannot perform. Quartz glass also provides better optical transmission in the UV range (down to 185nm vs 300nm for borosilicate), higher chemical resistance to acids and alkalis, and superior dimensional stability at elevated temperatures. The higher cost of quartz glass is justified in applications requiring these superior properties, such as semiconductor processing, high-temperature furnaces, UV systems, and ultra-pure chemical processing. For lower temperature applications (<500°C) where UV transmission is not critical, borosilicate glass may be a cost-effective alternative.
Standard products typically ship within 7-14 business days. Custom fabricated components require 3-6 weeks depending on complexity and specifications. We maintain inventory of common sizes for faster delivery and offer expedited production for urgent requirements. For large volume orders, lead times may be extended but we work closely with customers to meet project deadlines. Rush orders can often be accommodated with additional fees. We provide regular production updates and tracking information once orders ship. International shipping times vary by destination but typically range from 5-15 days via air freight or 20-40 days via ocean freight. We work with reliable logistics partners to ensure safe, timely delivery worldwide.
Yes, FGQuartz specializes in custom quartz glass fabrication. We offer precision machining, custom dimensions, specialized coatings, and unique geometries. Our engineering team works closely with clients to develop components that meet exact specifications for specialized applications. We can produce custom tubes with specific diameter/wall thickness combinations, rods with unique cross-sections, plates with precision-ground surfaces, and complex assemblies. Our capabilities include CNC machining, flame working, grinding, polishing, drilling, cutting, and joining. We provide prototyping services to validate designs before full production. Minimum order quantities vary by complexity, and we welcome both small-batch custom orders and large-scale production runs. Lead time for custom components is typically 3-6 weeks depending on complexity.
Quartz glass is essential in semiconductor manufacturing (diffusion tubes, wafer carriers), optical fiber production (preform manufacturing), laboratory equipment (crucibles, beakers), solar energy (photovoltaic processing), lighting (UV lamps), and chemical processing (high-purity reactors). FGQuartz serves all these industries with customized solutions. Additional applications include pharmaceutical manufacturing, aerospace testing, materials research, environmental monitoring, food processing (UV sterilization), water treatment, and specialty glass manufacturing. Our products are used by leading companies in electronics, telecommunications, energy, chemicals, and scientific research sectors worldwide.
Our quartz glass products have a softening point of 1680°C and can withstand continuous operating temperatures up to 1200°C. The material exhibits exceptional thermal shock resistance, allowing rapid temperature changes from 1100°C to room temperature without cracking or structural damage. The annealing point is 1215°C and strain point is 1120°C. For short-term exposure, quartz glass can handle temperatures up to 1300°C. The low thermal expansion coefficient (0.5 × 10⁻⁶/K) contributes to superior thermal shock resistance compared to other glass materials. This makes our quartz glass ideal for high-temperature furnaces, rapid thermal processing equipment, and applications involving extreme temperature cycling.
FGQuartz manufactures ultra-pure quartz glass with 99.99% SiO2 purity. Our advanced manufacturing processes ensure minimal impurities, making our products ideal for semiconductor processing, optical fiber production, and high-precision laboratory applications where material purity is critical. We use premium natural quartz crystals as raw material and employ multi-stage purification during the fusion process. Typical impurity levels are: Al < 10 ppm, Fe < 5 ppm, Na < 3 ppm, K < 2 ppm, with total metallic impurities < 20 ppm.
Technical Resources
Latest Technical Insights
Explore our comprehensive library of technical articles covering quartz glass properties, manufacturing processes, and application best practices.
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Understanding Quartz Glass Purity: The Critical Role of 99.99% SiO2 in Semiconductor Manufacturing
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Optical Properties of Fused Quartz: Transmission Characteristics from UV to IR Spectrum
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