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Custom High-Purity Quartz Furnace Tube for Laboratory & Industrial Use - China Suppliers & Factory

Quartz furnace tubes, manufactured from high-purity quartz sand, offer exceptional resistance to high temperatures, capable of withstanding up to 1200℃ or more. Renowned for their excellent thermal stability and strong chemical inertness, these tubes are integral components in high-temperature heat treatment processes across various industries, including semiconductors, photovoltaics, and new materials. They play a crucial role in vacuum and diffusion furnaces, These quartz furnace tubes serve as essential components in thermal processing equipment used for semiconductor and photovoltaic applications. Constructed from high-purity silicon dioxide (SiO₂), they function as the reaction chamber within high-temperature diffusion and oxidation furnaces, providing a controlled environment for wafer processing at elevated temperatures, Our quartz furnace tubes are made from high-purity synthetic fused silica (SiO₂ ≥99.99%) with a low hydroxyl (OH) content of less than 50ppm. As a leading factory and supplier in China, we ensure the highest quality products to meet the demands of advanced industrial applications

Product Description

Material & Quality

Made from 99.99% high-purity fused silica, our large-diameter quartz tube is free of impurities, ensuring minimal thermal expansion and maximum resistance to thermal shock (can withstand rapid temperature changes from -20℃ to 1200℃). It is non-toxic, non-porous, and resistant to most acids (except hydrofluoric acid) and alkaline solutions, making it suitable for corrosive chemical processing.

Core Advantages

Superior thermal stability: Operates continuously at 1100℃, short-term use up to 1450℃
Excellent mechanical strength: High compressive strength and impact resistance, cracking during installation and use
Customization support: Cut-to-length, flanged ends, and drilled holes available per customer drawings
Long service life: Resists aging and oxidation even under prolonged high-temperature exposure

Key Application Fields of Large-Diameter Quartz Tubes

Large-diameter quartz tubes are essential components in various high-end industries, thanks to their excellent thermal stability, chemical inertness and high light transmittance.

Semiconductor Industry

They are widely used in diffusion furnaces, oxidation furnaces and ion implantation equipment for wafer processing. The high purity and corrosion resistance of quartz tubes can ensure no pollution to semiconductor materials during high-temperature processes.
Solar Energy Sector

Applied to the production line of photovoltaic cells and silicon wafers, they serve as the core components of high-temperature sintering and coating equipment, helping to improve the conversion efficiency of solar cells.
High-Temperature Heat Treatment & Metallurgy

Used as furnace linings and heating chambers in annealing furnaces, quenching furnaces and sintering furnaces, they can withstand continuous high-temperature operation up to 1100℃ and resist thermal shock.
Laboratory & Scientific Research

Employed in high-temperature chemical reactors, vacuum tubes and chemical vapor deposition (CVD) systems, suitable for harsh experimental environments such as strong acid corrosion and high-temperature pyrolysis.
Optical Fiber & Optoelectronics Industry

Serve as protective sleeves and drawing molds in optical fiber preform production, ensuring the purity and uniformity of optical fiber materials during the high-temperature drawing process.
Environmental Protection & Waste Treatment

Used in high-temperature waste gas incinerators and hazardous waste treatment equipment, taking advantage of their high-temperature resistance and chemical stability to decompose harmful substances.

Product Specifications

Product Details

🔷 Shapes	Straight tube, U-shaped tube, spiral tube, and customized special structures.
📐 Sizes	Outer diameter 10mm–500mm, wall thickness 1mm–20mm, length 100mm–6000mm (per customer drawings).
⚙️ Features	Flange connection, closed end, quartz flange, and vacuum-sealed design available.
✨ Surface Treatment	Polished (inner/outer), frosted, or acid-etched surface.

❓ Frequently Asked Questions

Q. What shapes are available for the quartz tubes?

We offer straight tubes, U-shaped tubes, spiral tubes, and fully customized special structures to meet specific application requirements.

Q. What size range do your quartz tubes cover?

Our quartz tubes are available with an outer diameter from 10mm to 500mm, wall thickness from 1mm to 20mm, and lengths from 100mm to 6000mm. Custom dimensions are also accepted based on customer drawings.

Q. Can quartz tubes be made with vacuum-sealed or closed-end designs?

Yes. We support flange connection, closed-end, quartz flange, and vacuum-sealed designs to accommodate various industrial and laboratory needs.

Q. What surface treatment options are available?

We provide polished surfaces (both inner and outer), frosted finishes, and acid-etched surfaces, depending on the optical, chemical, or mechanical requirements of your application.

Q. Can I order quartz tubes based on my own drawings or specifications?

Absolutely. All dimensions and structural configurations can be customized per customer drawings. Please provide your technical drawings or detailed specifications when placing an inquiry.

Q. What is the difference between frosted and acid-etched quartz tube surfaces?

Frosted surfaces are mechanically processed to create a uniform matte finish, while acid-etched surfaces are chemically treated to achieve a more refined texture with improved optical diffusion properties. The choice depends on your specific use case.

Packaging and Shipping

Why Choose Southeast Quartz?

Southeast Quartz 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 to global customers. 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.