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 from China - Reliable Suppliers and Factory for Industrial Use Factories, Products

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

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.

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Product Description

📐 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.

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

Product Description

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