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High-Temperature Resistant Quartz Lamp Holders from China - Reliable Suppliers and Factory for Industrial Use

Introducing our high-quality quartz lamp holders, expertly crafted from high-purity quartz glass. These durable holders are designed to withstand high temperatures, providing exceptional insulation and light transmittance. Ideal for various light sources, including halogen lamps and infrared heating lamps, our quartz lamp holders are essential components that ensure the stable operation of your lighting and heating equipment. Withstand high-temperature radiation and current surges with confidence, making them a reliable choice for your needs.

Our quartz inner and outer lamp caps are vital parts of quartz lamps such as UV lamps, infrared lamps, and halogen lamps. They play a crucial role in electrical connection, sealing, and providing structural support. The inner cap connects to the internal electrode or light-emitting structure, while the outer cap serves as the external part for electrical connectivity and mounting.

As a leading supplier and factory in China, we are committed to delivering exceptional products that meet your quality standards. Trust us for your quartz lamp holder needs and experience the difference in performance and reliability.

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 & Physical Properties

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 for fused quartz glass?

Fused quartz glass can withstand a short-term use temperature of up to 1300 °C and a long-term continuous use temperature of up to 1100 °C. Its softening point reaches 1780 °C, making it suitable for high-temperature industrial applications.

Q What material is fused quartz glass made from?

Fused quartz glass is made from Silicon Dioxide (SiO₂) derived from natural quartz. It is transparent or colorless in appearance and features a bubble-free, line-free surface finish.

Q What are the available thickness options for fused quartz glass?

Fused quartz glass is available in a thickness range of 2MM to 20MM, with circular shapes offered as a standard form. Custom dimensions can typically be arranged based on application requirements.

Q What does the PPM grade mean for quartz glass, and what options are available?

PPM (parts per million) grade refers to the purity level of the quartz glass, indicating the concentration of trace impurities. Available grades are 10 PPM, 20 PPM, and 100 PPM, allowing customers to select the appropriate purity level based on their specific industrial or optical requirements.

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

The extremely low thermal expansion coefficient of 5.5 × 10⁻⁷ cm/cm·°C is a result of its high-purity amorphous SiO₂ structure. This makes fused quartz highly resistant to thermal shock and dimensional changes under fluctuating temperatures, ideal for precision and semiconductor applications.

Q What is the compressive strength of fused quartz glass, and how does it compare to other glass types?

Fused quartz glass has a compressive strength of 1100 MPa, which is significantly higher than standard soda-lime glass (typically 700–900 MPa). Combined with a Mohs hardness of 5.5–6.5 and a Young's modulus of 72,000 MPa, it offers excellent mechanical durability for demanding 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.