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
Company Profile
Southeast Quartz — A Pioneer in Fused Silica Precision
Lianyungang Southeast Quartz Products Co., Ltd., established in 2015, is located in Donghai County, Lianyungang City, Jiangsu Province—a national base for silicon material industry. As a professional manufacturer integrating R&D, design, production, sales and import & export trade, the company relies on the superior high-quality quartz ore resources in Donghai County, deeply engages in the deep processing of quartz glass, and has become a core supplier of quartz consumables for photovoltaic, semiconductor, laboratory, chemical, lighting and other industries with mature production technology, strict quality control system and complete customized services.
Superior Material Purity: All products are made of high-purity fused quartz raw materials, featuring excellent high-temperature resistance (up to 1200℃), thermal shock resistance, corrosion resistance, high light transmittance and good electrical insulation performance.
Precision Fused Quartz Glass Products
Explore our range of high-performance quartz products tailored for demanding thermal, chemical, and optical environments.
Fused Silica Quartz Plate – Heat Resistant
Our custom quartz plates deliver unmatched optical clarity, minimal thermal expansion, and superior mechanical strength for optical windows and heat shield components.
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Plasma-Fused Quartz Ingots
High-purity raw ingots processed via advanced plasma fusion, serving as the foundational block for ultra-precise quartz components and optical lenses.
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Oversized Fused Quartz Tube
Engineered for high-temperature furnace applications, these large-diameter tubes withstand extreme thermal gradients and chemical attack.
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Custom Size Quartz Furnace Tube
Designed for industrial and research furnaces, ensuring vacuum tightness and atmosphere control during high-temperature thermal processes.
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Quartz Bell Jar
Offering exceptional thermal stability and transparency for plasma etching and chemical vapor deposition (CVD) processes.
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Premium Quartz Boat
Custom-slotted carriers for semiconductor wafer processing and PV cell diffusion, optimized for uniform heat distribution.
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High Purity Quartz Digestion Tube
Ideal for laboratory acid digestion, providing robust chemical resistance to prevent sample contamination during analysis.
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Heat Resistant Quartz Lamp Holder
Precision-machined lamp holders featuring high electrical insulation and thermal shock resistance for UV lamp assemblies.
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High Purity Quartz Rod
Solid fused silica rods designed for high-temperature structural support, optical light guides, and fiber optic preforms.
View ProductCustom Quartz Plates & Fused Silica Substrates
Our custom quartz plates and fused silica substrates are precision-engineered to meet the most demanding thermal, optical, and chemical criteria. Unlike standard glass, fused quartz is composed of almost pure silicon dioxide (SiO₂), which yields unique properties essential for high-tech manufacturing.
Key Technical Properties:
- Thermal Resilience: Operates continuously at temperatures up to 1200°C, withstanding rapid heating and cooling cycles without fracturing.
- Optical Transmission: High transmittance spanning from the ultraviolet (UV) through the visible and into the near-infrared (NIR) spectrums.
- Chemical Inertness: Extremely resistant to acids, halogens, and organic solvents, ensuring zero contamination in chemical reactors.
- Dimensional Stability: Near-zero coefficient of thermal expansion, ensuring precise alignment in optical assemblies.
We provide custom sizing, precision polishing, chamfering, hole drilling, and customized profiling to match your specific engineering blueprints.
Material Comparison & Specifications
| Property | Fused Quartz | Borosilicate |
|---|---|---|
| SiO2 Content | > 99.9% | ~ 81% |
| Max Temp | 1200℃ | 500℃ |
| Thermal Expansion | 5.5 x 10⁻⁷/℃ | 32.5 x 10⁻⁷/℃ |
| UV Transmission | Excellent | Poor |
| Acid Resistance | Highly Resistant | Moderate |
Industry Applications of Fused Quartz
Serving high-tech sectors with high-purity quartz products designed for extreme efficiency.
Semiconductor Manufacturing
Used in wafer processing, etching chambers, and diffusion furnaces. Fused silica components prevent metal impurity contamination under high-vacuum and high-heat environments.
Explore Semiconductor Applications →Photovoltaic (PV) Solar
Quartz crucibles, boats, and furnace tubes are critical in refining silicon ingots and processing solar cells, ensuring optimal electrical conversion efficiency.
Explore PV Applications →Laboratory & Analysis
Beakers, digestion tubes, and combustion boats made of high-purity quartz offer maximum chemical resistance and thermal shock durability for precise laboratory experiments.
Explore Lab Applications →Product Processing Display
A glimpse into our state-of-the-art quartz processing facility, utilizing advanced CNC cutting, polishing, and grinding machinery.
Global Quartz Excellence
At Southeast Quartz, we believe that quality is the lifeblood of our enterprise. Our manufacturing facility in Donghai County is equipped with cleanrooms and state-of-the-art testing instrumentation to guarantee that every quartz plate, tube, and custom component exceeds international standards.
Customer Supreme
Adhering to the philosophy of "Quality First, Customer Supreme, Innovation-Driven, Integrity Management", the company has established a complete quality inspection system.
Quality Control
All products undergo multiple tests such as helium mass spectrometry leak detection, pressure resistance test and purity test before leaving the factory to ensure stable performance, no impurities and no leakage.
Customized Services
Meanwhile, the company provides flexible customized services, and can customize product sizes, structures and specifications according to customers' equipment parameters and process requirements, quickly responding to personalized orders.
Quality • Service • Global Presence
Our products are exported to many countries and regions in Europe, America, Southeast Asia, the Middle East, and beyond, winning wide recognition and trust from global clients.
Factory Display & Facilities
Take a virtual tour of Lianyungang Southeast Quartz Products Co., Ltd. and explore our manufacturing workshops.
Advanced Production Line Showcase
Explore our specialized manufacturing cells designed for high-volume custom quartz plate production.
Certificate Display
Our products comply with international quality, safety, and environmental standards, certified by top global inspection bodies.
ISO 9001
REACH Compliance
RoHS Certification
SGS Verification
Technical Test Report
Frequently Asked Questions
Get answers to common technical questions about custom quartz plates and fused silica products.
What is the difference between fused silica and fused quartz?
Fused silica is made from synthetic silicon precursors, yielding extremely high purity and superior optical transmission in the UV spectrum. Fused quartz is melted from natural high-purity quartz crystals, which is excellent for general high-temperature applications and semiconductor furnace components.
Can you custom manufacture quartz plates to specific shapes and sizes?
Yes, we provide extensive custom fabrication services. Using CNC grinding, laser cutting, double-sided polishing, and drilling, we can manufacture quartz plates in round, square, rectangular, or irregular shapes based on your exact engineering drawings.
What is the maximum operating temperature for your quartz plates?
Our high-purity fused quartz products can withstand continuous operating temperatures up to 1200°C, and short-term exposure up to 1450°C. They exhibit excellent thermal shock resistance and can be heated and quenched rapidly without cracking.
How does Southeast Quartz ensure product quality?
We employ a rigorous quality control program that includes raw material testing, dimensional checks with coordinate measuring machines (CMM), helium leak detection for sealed assemblies, and certification compliance under REACH, RoHS, and SGS standards.
Partner with an Industry-Leading Quartz Supplier
Whether you need high-purity custom quartz plates, furnace tubes, or customized labware, Southeast Quartz has the engineering expertise and production capacity to meet your requirements.