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High-Temperature Resistant Quartz Lamp Holders - Top China Suppliers & Factory for Industrial Use

Quartz lamp holders, produced in China, are crafted from high-purity quartz glass, offering exceptional resistance to high temperatures, superior insulation, and outstanding light transmittance. These lamp holders are designed to work seamlessly with various light sources, including halogen lamps and infrared heating lamps. Capable of withstanding high-temperature radiation and current surges, they serve as essential components in lighting and heating systems, ensuring the reliable operation of the light source, Our quartz inner and outer lamp caps are crucial parts of quartz lamps, such as UV, infrared, and halogen lamps. These components facilitate electrical connections, provide sealing, and offer structural support to ensure optimal performance, The inner cap connects directly to the internal electrode or light-emitting structure, while the outer cap serves as the external element for electrical connections and mounting, As a leading factory in China, we pride ourselves on delivering high-quality quartz lamp holders and lamp caps that meet the needs of suppliers and manufacturers in the industry

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 The Quartz Glass Brick
PPM grade	Controlled 10 / 20 / 100 PPM
Shape	Circle
Thickness	2MM – 20MM

Frequently Asked Questions

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

This quartz glass has a short-term use temperature of up to 1300°C and a long-term use temperature of up to 1100°C, making it suitable for high-temperature industrial applications. Its softening point is 1780°C, providing excellent thermal stability.

Q What material is used in this quartz glass, and what is its purity level?

The material is Silicon Dioxide (Natural Quartz). The purity is precisely controlled at 10 PPM, 20 PPM, or 100 PPM grades, depending on the specific application requirements.

Q What thickness options are available for this quartz glass product?

The quartz glass is available in thicknesses ranging from 2MM to 20MM, offering flexibility for a wide variety of industrial, optical, and scientific applications.

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

The low thermal expansion coefficient is 5.5 × 10⁻⁷ cm/cm·°C, which is significantly lower than standard glass. This makes it highly resistant to thermal shock and ideal for environments with rapid temperature changes.

Q What are the optical properties of this quartz glass?

The quartz glass is transparent or colorless with an index of refraction of 1.4585. The surface is guaranteed to have no air bubbles and no lines, ensuring excellent optical clarity for precision applications.

Q How does the compressive strength of this quartz glass compare to standard glass?

With a compressive strength of 1100 MPa and a Young's modulus of 72,000 MPa, this quartz glass offers superior mechanical performance compared to standard soda-lime glass, making it well-suited for demanding structural and industrial uses.

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.