Quartz Furnace Tube
Oversized Quartz Tube
Quartz Boat
Quartz Plate
Quartz Lamp Holder
Quartz Rod
Quartz Ring
Customized Quartz Products
Plasma-Fused Quartz Ingots
Quartz Irregular Shaped Sheets
Quartz Crystal Singing Pyramid
Half-white Coated Short-wave Infrared Quartz Heating Lamp
Lianyungang Southeast Quartz Products Co., Ltd.
Established in 2015, Lianyungang Southeast Quartz Products Co., Ltd. is located in Donghai County, Jiangsu Province—renowned globally as the silicon material industry base of China. Leveraging the region's superior, high-purity quartz ore resources, we have grown into a leading, integrated manufacturer specializing in the R&D, design, production, sales, and export of high-grade quartz products.
We specialize in the deep processing of quartz glass, providing high-performance consumables to industries such as photovoltaics, semiconductors, laboratories, chemical engineering, and precision lighting. Our mature fabrication techniques, strict quality control systems, and flexible customization capabilities ensure your precise specifications are met with absolute accuracy.
Featured Quartz Products & Components
We supply an extensive range of high-purity fused silica and quartz glass products. Explore our key offerings engineered for demanding thermal and chemical applications.
Fused Silica Quartz Plate
Heat-resistant plates crafted from high-purity quartz. Perfect for high-temperature viewing windows, semiconductor processing, and laboratory heat shields.
Quartz Furnace Tube
Customized quartz tubes designed for laboratory and industrial furnaces. High thermal shock resistance and chemical purity for sensitive processes.
Premium Quartz Boat
Specially engineered quartz wafer boats for high-temperature semiconductor diffusion, LPCVD, and annealing processes.
Custom Quartz Glass Plates: Engineering & Specifications
As a dedicated quartz plates supplier in China, we provide custom-tailored quartz glass plates optimized for optical clarity, thermal stability, and mechanical strength. Quartz plates (often referred to as fused silica plates or quartz windows) are manufactured by melting high-purity natural silica sand or synthetic precursors. The result is a non-crystalline material with exceptional properties that outperform standard glass in every aspect.
Why Choose Our Custom Quartz Glass Plates?
- Extreme Thermal Resistance: Capable of continuous operation up to 1100°C, and short-term exposure up to 1200°C with minimal thermal expansion.
- Broad Optical Transmission: Excellent transmittance from the Ultraviolet (UV) spectrum through to the Infrared (IR) range.
- Unmatched Corrosion Resistance: Highly resistant to acids (except hydrofluoric acid) and alkali solutions, ensuring longevity in aggressive chemical environments.
- High Structural Purity: Low trace metal content prevents contamination during semiconductor processing and chemical reactions.
| Property | Typical Value |
|---|---|
| Purity (SiO2) | > 99.99% |
| Density | 2.2 g/cm³ |
| Softening Point | 1680°C - 1730°C |
| Annealing Point | 1180°C - 1210°C |
| Max Working Temperature | 1100°C (Continuous) / 1200°C (Short-term) |
| Thermal Expansion Coefficient | 5.5 × 10⁻⁷ / °C (Extremely Low) |
Global Quartz Excellence
We integrate high-tech processing with strict quality assurance to deliver superior quartz solutions worldwide.
01. Customer Supreme
Adhering to our core philosophy of "Quality First, Customer Supreme, Innovation-Driven, and Integrity Management", we align our engineering pipelines with our clients' specific application requirements.
02. Purity & Pinhole Control
Every quartz plate undergoes strict inspection, including ultrasonic cleaning, optical transmission checks, and defect mapping, ensuring a clean, bubble-free, and scratch-free surface finish.
03. Customization Services
We provide custom mechanical machining, CNC milling, precision drilling, surface grinding, and optical polishing (Ra
Industrial Applications of Custom Quartz Glass Plates
Due to their outstanding physical and chemical properties, quartz plates serve as critical components across high-tech industries.
Semiconductor & Photovoltaic (PV) Processing
In semiconductor manufacturing, quartz plates act as substrates, heat shields, and gas distribution plates. Their ultra-low impurity level ensures that silicon wafers remain free from metal contamination during high-temperature annealing, diffusion, and CVD processes. For solar cell production, quartz plates are utilized in furnace fixtures and wafer handling systems.
Laboratory & Chemical Analysis
For researchers and chemists, quartz glass provides high transparency in the UV spectrum, making it the material of choice for cuvettes, microfluidic chips, and reactor windows. Its resistance to corrosive acids ensures structural integrity during aggressive chemical digestions.
High-Temperature Viewing Windows
Industrial kilns, vacuum furnaces, and boilers operate at temperatures that melt standard sight glasses. Our custom quartz glass plates function reliably as viewing windows, allowing real-time monitoring of high-temperature reactions without compromising safety or structural integrity.
Optical & UV Applications
With superior light transmission from 190nm to 3500nm, quartz plates are widely integrated into laser optics, UV curing equipment, and spectroscopic instrumentation. We offer JGS1, JGS2, and JGS3 grade quartz to meet specific optical transmission demands.
State-of-the-Art Manufacture & Processing
Take a look inside our advanced manufacturing facility. From raw material cutting to precision CNC machining and final polishing, we maintain control over every step of the fabrication process.
Product Processing Display
Factory Workshop Display
Strict Quality Control & Certification
At Lianyungang Southeast Quartz Products Co., Ltd., quality is not just a slogan; it is the foundation of our business. To guarantee high reliability and performance under harsh operational conditions, all quartz plates and custom glass products undergo a rigorous testing sequence before dispatch:
Our manufacturing processes comply with strict international standards. We hold certifications for ISO9001 Quality Management, REACH, RoHS, and SGS, confirming our commitment to environmentally friendly and high-standard production.
International Certifications
Our Factory Infrastructure & Operations
Equipped with heavy-duty sizing, cutting, and polishing machinery, our facility is designed for large-scale industrial output and custom batch manufacturing.
Trusted by Customers Worldwide
Quality • Service • Global Presence
With reliable product quality, efficient delivery schedules, and responsive after-sales service, Lianyungang Southeast Quartz Products Co., Ltd. has established a strong presence domestically and internationally. Our quartz plates, furnace tubes, and custom components are exported to Europe, North America, Southeast Asia, the Middle East, and beyond.
Continuous Innovation & Research
Looking forward, we continue to invest in our production technology and raw material purification processes. By keeping pace with the evolving demands of the semiconductor and green energy industries, we strive to deliver higher-quality, professional quartz solutions that power high-tech manufacturing and scientific research globally.
Frequently Asked Questions (FAQ)
Find answers to common technical queries about custom quartz glass plates and silica substrates.
What is the difference between JGS1, JGS2, and JGS3 quartz plates?
JGS1 (Far UV Grade): Made from synthetic silica, offering excellent transmission in the deep UV range (180nm-2000nm), bubble-free.
JGS2 (UV/Vis Grade): Made from natural quartz, suitable for standard optical and thermal applications (220nm-2500nm).
JGS3 (Infrared Grade): Excellent transmittance in the IR spectrum (260nm-3500nm), with low hydroxyl (OH) content.
Can you machine custom shapes and drill holes in quartz plates?
Yes. Using advanced CNC machining centers, water-jet cutting, and precision diamond drills, we can manufacture custom quartz glass plates with complex profiles, custom cutouts, step edges, and high-precision hole grids down to sub-millimeter tolerances.
What is the maximum temperature a quartz glass plate can withstand?
Quartz glass has a softening point of around 1680°C. For practical applications, the continuous maximum working temperature is 1100°C. It can safely reach 1200°C for short periods. It also exhibits outstanding thermal shock resistance, surviving rapid cooling from 1000°C to room temperature without cracking.
How do you ensure the surface quality of polished quartz plates?
We utilize double-sided optical polishing machines to achieve surface roughness (Ra) values of less than 0.2-0.5 nm, with flatnesses of 1-3 lambda per inch. All plates are cleaned in dust-free rooms and inspected under monochromatic light sources to guarantee zero scratches, digs, or surface contamination.