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Customized Quartz Products from China - High-Quality Suppliers and Factory Solutions for Your Needs

Our high-purity quartz instruments, manufactured in China, include an extensive range of products such as quartz tubes, quartz boats, quartz crucibles, quartz reactors, quartz spiral tubes, and quartz reaction vessels. These premium quartz products are known for their exceptional temperature resistance, corrosion resistance, outstanding light transmittance, and robust chemical stability, making them essential in various industries. As leading suppliers and factory providers, we cater to the semiconductor, photovoltaic, and chemical sectors, as well as scientific research fields. Our quartz instruments are crucial for high-temperature processing, precision synthesis, and optical experiments, ensuring accurate processes and reliable equipment performance.

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

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	72000 MPa
Modulus of Rigidity	31000 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

Q1 What is the maximum use temperature of this quartz glass product?

This quartz glass product supports a short-term use temperature of up to 1300 °C and a long-term use temperature of up to 1100 °C. The thermal processing temperature range is 1750 ~ 2050 °C, making it suitable for high-temperature industrial applications.

Q2 What material is used, and what are its purity grades?

The material is Silicon Dioxide (Natural Quartz). It is available in controlled PPM grades of 10 PPM, 20 PPM, and 100 PPM, allowing customers to select the appropriate purity level based on their specific application requirements.

Q3 What thickness options are available for this quartz glass?

The quartz glass is available in a thickness range of 2 MM to 20 MM. It comes in a circular shape and features a transparent or colorless appearance with a surface free of air bubbles and lines.

Q4 What is the thermal expansion coefficient of this quartz glass?

This quartz glass has an exceptionally low thermal expansion coefficient of 5.5 × 10⁻⁷ cm/cm·°C. This ultra-low expansion rate ensures excellent dimensional stability across wide temperature ranges, minimizing thermal stress and deformation during use.

Q5 How hard is this quartz glass, and what is its compressive strength?

The quartz glass has a Mohs hardness of 5.5 ~ 6.5 and a compressive strength of 1100 MPa, demonstrating excellent mechanical durability. Its Young's Modulus is 72000 MPa and Modulus of Rigidity is 31000 MPa, indicating high structural rigidity.

Q6 What is the index of refraction, and how does it affect optical applications?

The quartz glass has an index of refraction of 1.4585. This precise optical property, combined with its transparency and bubble-free surface, makes it highly suitable for optical lenses, laser windows, UV transmission components, and other precision optical applications.

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.