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 — Leading the Silicon Material Revolution
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.
The company has standardized production workshops, advanced quartz processing equipment and a professional R&D team, with full-process production capacity from quartz raw material processing to finished product manufacturing. It can produce a full range of quartz products, including high-purity fused quartz tubes, quartz furnace tubes, quartz bell jars, quartz boats, quartz lamp holders, quartz crucibles, quartz instruments (beakers, condensers, distillers, etc.), and tri-acid purification equipment.
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, which can meet the demanding working conditions such as vacuum environment, high-temperature sintering, atmosphere control and precision experiments.
High-Purity Quartz Tubes for Solar Applications
Understanding the critical role of premium quartz glass in the manufacturing of high-efficiency photovoltaic cells.
Diffusion & Oxidation Processes
During the thermal diffusion phase of solar wafer manufacturing, quartz furnace tubes serve as the critical barrier. They must withstand sustained temperatures up to 1200°C while preventing external contaminants from entering the silicon wafer matrix, ensuring optimal electrical performance.
LPCVD & PECVD Technologies
High-purity quartz tubes are crucial in Low-Pressure Chemical Vapor Deposition (LPCVD) and Plasma-Enhanced Chemical Vapor Deposition (PECVD) setups, which deposit ultra-thin passivation layers on N-type TOPCon solar cells to maximize sunlight conversion efficiency.
Wafer Carrier Systems
Quartz boats and structural components must fit seamlessly inside the quartz furnace tubes. Our tight dimensional tolerances guarantee precise alignment, reducing wafer breakage and optimizing gas flow dynamics across the processing chamber.
Why Material Purity Matters in Photovoltaics
In the highly competitive solar energy sector, even minute levels of metallic impurities (such as Iron, Copper, or Sodium) can cause severe degradation in solar cell efficiency. By utilizing raw materials from the rich quartz deposits of Donghai County, Lianyungang Southeast Quartz ensures that our products maintain an extremely low impurity profile. This stability directly translates to longer carrier lifetimes in N-type and P-type solar cells, helping solar manufacturers achieve record-breaking cell efficiencies.
Read our detailed Application Guide on Quartz Tubes →Featured Photovoltaic Quartz Products
Engineered for high thermal resistance, chemical purity, and extreme mechanical durability.
Oversized Fused Quartz Tube for High Temp Applications
Designed to withstand extreme thermal stress in large-scale industrial and solar cell furnaces.
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Custom Size Quartz Furnace Tube for Laboratory & Industrial Use
Precision-engineered furnace tubes tailored to customer dimensions and thermal requirements.
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Premium Quartz Boat for High Temperature Processes
High-stability carrier boats designed for optimal wafer positioning and uniform gas distribution.
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Quartz Bell Jar with Excellent Thermal Stability
Ideal for high-temperature vacuum sintering, deposition, and protective gas containment.
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Introduction to Plasma-Fused Quartz Ingots
Raw material block solutions melted via plasma arc to guarantee zero bubble defects.
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Fused Silica Quartz Plate – Heat Resistant
Optically clear, high-purity flat windows engineered for extreme thermal shock resistance.
View DetailsGlobal Quartz Excellence
Our core pillars of operation ensure that you receive premium-grade quartz solutions with every order.
01
Customer Supreme
Adhering to the philosophy of "Quality First, Customer Supreme, Innovation-Driven, Integrity Management", the company has established a complete quality inspection system.
02
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.
03
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.
Trusted by Customers Worldwide
Southeast Quartz Global NetworkQuality • Service • Global Presence
With reliable product quality, efficient delivery capacity and thoughtful after-sales service, the products of Lianyungang Southeast Quartz Products Co., Ltd. not only cover all provinces and cities in China, but also are exported to many countries and regions in Europe, America, Southeast Asia, the Middle East, etc., winning wide recognition and trust from customers at home and abroad.
Innovation and Research
In the future, the company will continue to deeply cultivate the field of quartz products, continuously improve technological innovation and production technology levels, and strive to provide global customers with higher-quality and more professional quartz product solutions, contributing to the high-quality development of high-end manufacturing and scientific research fields.
Technical Characteristics of Fused Quartz
Our quartz tubes are manufactured using advanced thermal fusion technologies, guaranteeing elite physical properties.
| Property | Typical Values | Impact on Solar & Semiconductor Processes |
|---|---|---|
| Purity (SiO2 Content) | ≥ 99.99% - 99.999% | Prevents heavy metal contamination during thermal processing cycles. |
| Thermal Stability | Up to 1200℃ (Continuous working) | Allows high-temperature diffusion and annealing processes. |
| Thermal Expansion Coefficient | 5.5 × 10-7 / ℃ (20℃ - 320℃) | Ensures dimensional stability and prevents cracks under rapid temperature swings. |
| OH Content | < 5 ppm to 150 ppm (Customizable) | Low OH content prevents sagging and extends tube lifespan at high temperatures. |
| Softening Point | ~ 1680℃ | Maintains mechanical integrity under vacuum and heavy load structural stresses. |
State-of-the-Art Manufacture
Step inside Lianyungang Southeast Quartz Products Co., Ltd. and explore our modern production, processing, and assembly facilities.
Product Processing Display
Factory Display
Manufacturing Gallery
Certificate Display
Our commitment to quality is validated by international standards bodies, ensuring total reliability.
Frequently Asked Questions
Common questions regarding high-purity quartz tubes for solar cell production and semiconductor industries.
Q1: What makes quartz tubes from Donghai County superior?
Donghai County is widely recognized as a global hub for high-grade silicon materials. The local quartz ore deposits feature extremely low concentrations of metallic impurities. By sourcing materials directly from this region, Southeast Quartz guarantees raw purity that minimizes contamination risks during high-temperature thermal processes.
Q2: What is the maximum temperature limits for your fused quartz tubes?
Our high-purity fused quartz tubes can safely operate continuously at temperatures up to 1100°C - 1200°C. For short-duration thermal cycles, they can withstand temperatures up to 1300°C. They also exhibit exceptional thermal shock resistance, allowing rapid cooling without risk of fracture.
Q3: Do you offer custom sizes and configurations?
Yes, customization is one of our primary strengths. We process quartz tubes, furnace tubes, and bell jars to exact client specifications, adjusting dimensions, wall thickness, and adding custom flanges, slots, or joints to fit specific solar furnace equipment.
Q4: How do you verify the quality of each batch before shipping?
Each batch undergoes structural and material testing, including dimensional tolerance checks, visual bubble inspections, helium mass spectrometry leak detection, and chemical purity assessments. We ensure all products are free of micro-cracks and structural defects before dispatch.
Connect With Southeast Quartz
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Get In Touch
No. 1 Qingsheng Rd., Qinghu Industrial Park, Donghai County, Jiangsu, China 222300
+86 135-8528-2520
+86 135-8528-6180
+86 138-5128-2778