Hot Products

jimeng-2025-12-02-1191-保持三个透明塑料支架主体不变，扩展黑色背景区域使画面变为正方形构图(1).png

jimeng-2025-12-02-1619-扩展黑色背景区域使画面变为正方形构图(1).png

jimeng-2025-12-02-5108-扩展黑色背景区域使画面变为正方形构图(1).png

jimeng-2025-12-02-6433-扩展黑色背景区域使画面变为正方形构图(1).png

High-Quality Heat Resistant Quartz Lamp Holder - China Suppliers & Factory for Industrial Use

Introducing our high-purity quartz lamp holders, engineered to excel in high-temperature environments. These premium holders, manufactured in China, boast exceptional insulation and light transmittance properties, making them ideal for use with halogen lamps, infrared heating lamps, and more. Our quartz lamp holders are designed to withstand high-temperature radiation and current surges, serving as the essential core component of lighting and heating equipment to ensure the stable operation of your light sources, As a leading supplier and factory in the industry, we offer both inner and outer quartz lamp caps. The inner cap is intricately connected to the internal electrode or light-emitting structure, while the outer cap is crafted for seamless electrical connection and mounting. Trust our quality products to enhance the efficiency and durability of your lighting solutions

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	2.2 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

What is the maximum operating temperature for fused quartz glass?

Fused quartz glass can withstand a short-term use temperature of up to 1300 °C and a long-term use temperature of up to 1100 °C, making it highly suitable for high-temperature industrial and laboratory applications.

Why does fused quartz glass have such a low thermal expansion coefficient?

The extremely low thermal expansion coefficient (5.5 × 10⁻⁷ cm/cm·°C) is a result of its high silicon dioxide purity and amorphous molecular structure, which minimizes dimensional changes under temperature fluctuations and provides exceptional thermal shock resistance.

What PPM purity grades are available for this quartz glass?

The quartz glass is available in controlled purity grades of 10 PPM, 20 PPM, and 100 PPM, allowing customers to select the appropriate level of trace element content for semiconductor, optical, or general industrial use.

What thickness range is available for the circular quartz glass?

The circular fused quartz glass discs are available in thicknesses ranging from 2 MM to 20 MM, providing flexibility for a wide variety of engineering and optical applications.

Is the surface quality of the quartz glass guaranteed to be bubble-free?

Yes. The quartz glass is manufactured to strict surface quality standards — completely free of air bubbles and surface lines — ensuring optical clarity and structural integrity for precision applications.

What is the compressive strength of this fused quartz glass and how does it compare to other materials?

The compressive strength of this fused quartz glass is 1100 MPa, which is significantly higher than standard borosilicate glass and many ceramics, making it an excellent choice for applications requiring both mechanical durability and high-temperature performance.

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.