What information do you need to engineer a custom quartz tube or component?

Please send outer and inner diameter (or wall thickness), length, required tolerances, end configuration (open, closed, flanged, ground joint or welded fittings), material grade (transparent or opaque fused quartz), working temperature and atmosphere, annual or batch quantity, and a drawing in PDF, DWG or STEP format. Complete data lets our engineers confirm manufacturability and lead time in a single review.

What is the maximum operating temperature of fused quartz?

Transparent fused quartz typically supports continuous service around 1,100 °C and short exposures up to roughly 1,250 °C, with a softening point near 1,683 °C. Real limits depend on grade, load, atmosphere and cycle time. Above about 1,100 °C, surface contamination such as alkali residue from skin contact accelerates devitrification, so quartzware should be cleaned and handled with clean gloves before firing.

How does Southeast Quartz verify quality before shipment?

Products undergo helium mass-spectrometry leak detection, pressure resistance testing and purity testing before leaving the factory, together with dimensional inspection against the customer drawing, to ensure stable performance with no impurities and no leakage.

Can you manufacture oversized quartz tubes and non-standard quartz shapes?

Yes. Our workshop combines flame hot-working with CNC cold machining, so we produce oversized fused quartz tubes, bell jars, slotted quartz boats, flanged reactors, irregular shaped quartz sheets and fully customized quartz instruments according to customer equipment parameters.

Where is Southeast Quartz located and which markets do you export to?

Our factory is at No. 1 Qingsheng Rd., Qinghu Industrial Park, Donghai County, Jiangsu, China, within China's best-known crystal and quartz industrial cluster. Besides customers throughout China, we export to Europe, the Americas, Southeast Asia and the Middle East.

Custom High-Temperature Resistant Quartz Lamp Holders - Top China Suppliers & Factory for Industrial Use Factories, Product

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Custom High-Temperature Resistant Quartz Lamp Holders - Top China Suppliers & Factory for Industrial Use Factories, Product

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

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Product Description

Product 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 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.

Custom High-Temperature Resistant Quartz Lamp Holders - Top China Suppliers & Factory for Industrial Use Factories, Product

Product Description

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