Hot Products

Customized High-Purity Quartz Products from China Suppliers - Reliable Quartz Factory for Electronics and Research

Quartz instruments manufactured by leading suppliers in China are crafted from high-purity quartz material. Our extensive range includes quartz tubes, quartz boats, quartz crucibles, quartz reactors, quartz spiral tubes, and quartz reaction vessels. These products are renowned for their exceptional high temperature resistance, corrosion resistance, superior light transmittance, and robust chemical stability. They find extensive applications across various industries, including semiconductor, photovoltaic, chemical, and scientific research. As essential instruments for high-temperature processing, precision synthesis, and optical experiments, our quartz solutions ensure accuracy in processes and reliable operation of equipment. Trust our factory to deliver the quality and performance that meet your needs in advanced 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

Mechanical Behavior & Technical Specifications

Mechanical Behavior	Standard Values
Density	2.2 g/cm³
Compressive Strength	1100 MPa
Flexural Strength	67 MPa
Poisson's Ratio	0.14 ~ 0.17
Young's Modulus	72,000 MPa
Modulus of Rigidity	31,000 MPa
Mohs Hardness	5.5 ~ 6.5
Transformation Point	1280 °C
Softening Point	1780 °C
Annealing Point	1250 °C
Specific Heat (20 ~ 350 °C)	670 J/kg·°C
Thermal Conductivity (20 °C)	1.4 W/m·°C
Index of Refraction	1.4585
Low Thermal Expansion Coefficient	5.5 × 10⁻⁷ cm/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 Quartz Glass Brick
PPM Grade	Controlled 10 / 20 / 100 PPM
Shape	Circle
Thickness	2 mm – 20 mm

Frequently Asked Questions

Q What material is used to manufacture this quartz glass product?

The product is made from Silicon Dioxide (Natural Quartz). It is transparent or colorless in appearance, with a surface free of air bubbles and lines, ensuring high optical clarity and structural integrity.

Q What is the maximum operating temperature for this quartz glass?

The quartz glass has a short-term use temperature of up to 1300 °C and a long-term use temperature of 1100 °C. Its softening point is 1780 °C, making it highly suitable for extreme high-temperature environments.

Q What thickness options are available for this quartz glass?

The quartz glass is available in thicknesses ranging from 2 mm to 20 mm, offering flexibility for a wide range of industrial and optical applications. The standard shape is circular.

Q What does the PPM grade specification mean, and what grades are available?

PPM (Parts Per Million) grade refers to the level of impurity or contamination control within the quartz glass. This product is available in controlled grades of 10 PPM, 20 PPM, and 100 PPM, allowing customers to select the appropriate purity level for their specific application requirements.

Q How does the low thermal expansion coefficient benefit this quartz glass?

With a very low thermal expansion coefficient of 5.5 × 10⁻⁷ cm/cm·°C, this quartz glass exhibits minimal dimensional change under temperature fluctuations. This property makes it ideal for precision instruments, semiconductor equipment, and applications requiring high dimensional stability across wide temperature ranges.

Q What are the key mechanical strength properties of this quartz glass?

This quartz glass offers a compressive strength of 1100 MPa and a flexural strength of 67 MPa, combined with a Young's Modulus of 72,000 MPa and a Modulus of Rigidity of 31,000 MPa. Its Mohs hardness ranges from 5.5 to 6.5, providing excellent resistance to mechanical stress and surface scratching.

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.