Hot Products

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

Quartz furnace tubes are manufactured from high-purity quartz sand, making them highly resistant to extreme temperatures, supporting up to 1200℃ or even higher. With excellent thermal stability and remarkable chemical inertness, these tubes are essential in high-temperature heat treatment applications in various industries, including semiconductors, photovoltaics, and advanced materials. As a core component in vacuum furnaces and diffusion furnaces, quartz furnace tubes ensure optimal performance in thermal processing, Our quartz furnace tubes, crafted from high-purity silicon dioxide (SiO₂ ≥ 99.99%) with low hydroxyl (OH) content (

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

1. Can the quartz tubes be customized to specific dimensions? Yes, we specialize in custom manufacturing. We can produce tubes with outer diameters from 10mm to 500mm and lengths up to 6000mm based on your technical drawings.

2. What types of special shapes do you offer? Beyond straight tubes, we provide U-shaped tubes, spiral tubes, and complex customized structures including those with quartz flanges or closed ends.

3. Are vacuum-sealed designs available for high-pressure applications? Absolutely. We offer professional vacuum-sealed designs and flange connections to ensure optimal performance in demanding industrial environments.

4. What surface finishes can I choose from? We offer three primary surface treatments: high-precision polishing (both inner and outer), frosted finishes for light diffusion, and acid-etched surfaces for specific chemical requirements.

5. What is the typical wall thickness range for these tubes? Our standard wall thickness ranges from 1mm to 20mm, allowing for a wide variety of structural strengths depending on your project needs.

6. How are the tubes prepared for shipping? Each tube undergoes rigorous quality inspection and surface treatment (like acid washing) before being securely packed to prevent any damage during transit.

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.