Hot Products

Customized High-Purity Quartz Products from China Suppliers and Factory for Semiconductor and Chemical Industries

Quartz instruments, manufactured from high-purity quartz material, encompass a diverse range of products including quartz tubes, quartz boats, quartz crucibles, quartz reactors, quartz spiral tubes, and quartz reaction vessels. Renowned for their high temperature resistance, corrosion resistance, exceptional light transmittance, and robust chemical stability, these instruments are essential in various sectors such as semiconductor, photovoltaic, chemical, and scientific research. As leading suppliers in China, our factory produces core instruments that excel in high-temperature processing, precision synthesis, and optical experiments, ensuring process accuracy and the reliable operation of equipment. Invest in our quartz instruments to enhance your applications and maintain superior performance in your operations

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

Mechanical behavior	Standard values
Density	2.2g/cm3
Compressive strength	1100Mpa
Flexural strength	67Mpa
Poisson's ratio	0.14~0.17
Young's modulus	72000Mpa
Modulus of rigidity	31000Mpa
Mohs hardness	5.5~6.5
Transformation point	1280°C
Softening Point	1780°C
Annealing point	1250°C
Specific heat (20 ~ 350 °C)	670J/kg .°C
Thermal conductivity (20 °C)	1.4W/m.°C
Index of refraction	1.4585
Low thermal expansion coefficient	5.5*10-7cm/cm.°C
Thermal processing temperature	1750~2050°C
Short-term use temperature	1300°C
Long-term use temperature	1100°C
Material	Silicon Dioxide (Natural Quartz )
Color	Transparent or colorless
Surface	No Air Bubble ,no line
Strain	1270 C Fused The Quartz Glass Brick
PPM grade	Controlled 10/20/100PPM
Shape	Circle
Thickness	2MM-20MM

Frequently Asked Questions

What is the material composition and purity grade of this quartz glass?

The material is Silicon Dioxide (Natural Quartz) with a controlled PPM grade of 10/20/100PPM, ensuring high purity and transparent or colorless appearance with no air bubbles or lines on the surface.

What are the maximum operating temperatures for this material?

The quartz glass has a long-term use temperature of 1100°C and can support short-term use up to 1300°C. Its softening point is 1780°C and the thermal processing temperature ranges from 1750°C to 2050°C.

What are the mechanical strength properties of the quartz glass?

It offers high mechanical stability with a compressive strength of 1100Mpa, flexural strength of 67Mpa, and a Mohs hardness rating of 5.5 to 6.5.

What is the thermal expansion coefficient and thermal conductivity?

This material features a low thermal expansion coefficient of 5.5*10-7cm/cm.°C and a thermal conductivity of 1.4W/m.°C at 20°C, providing excellent thermal shock resistance.

What are the physical dimensions and shapes available?

The standard shape is circular (Circle) and it is available in thicknesses ranging from 2MM to 20MM.

What is the refractive index of this quartz glass?

The index of refraction for this transparent, high-purity natural quartz glass is 1.4585.

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.