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.

High-Quality High-Temperature Resistant Quartz Lamp Holder - China Suppliers & Factory for Industrial Use Manufacturer, Factory

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High-Quality High-Temperature Resistant Quartz Lamp Holder - China Suppliers & Factory for Industrial Use Manufacturer, Factory

Quartz lamp holders are expertly crafted from high-purity quartz glass, ensuring remarkable resistance to extreme temperatures and superior light transmittance. These lamp holders are designed to be compatible with various light sources, including halogen lamps and infrared heating lamps. Their ability to endure high-temperature radiation and current surges makes them essential components of lighting and heating equipment, guaranteeing stable operation for your light sources, Our quartz inner and outer lamp caps serve as crucial end components for quartz lamps, such as UV, infrared, and halogen lamps. They provide reliable electrical connections, effective sealing, and robust structural support, - **Inner Cap:** Connects to the internal electrode or light-emitting structure, facilitating optimal performance, - **Outer Cap:** Functions as the external component for electrical connections and secure mounting, As a leading supplier and factory based in China, we pride ourselves on delivering high-quality quartz lamp holders and caps that meet the demands of various lighting applications. Choose us for dependable products that enhance the efficiency and durability of your lighting systems

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Product Description

Technical 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 Quartz Glass Brick
PPM Grade	Controlled 10 / 20 / 100 PPM
Shape	Circle
Thickness	2 mm – 20 mm

Frequently Asked Questions

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

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

Q What material is used to manufacture this quartz glass, and what purity levels are available?

The glass is made from Silicon Dioxide (Natural Quartz). It is available in controlled purity grades of 10 PPM, 20 PPM, and 100 PPM to meet various industrial and scientific requirements.

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

The quartz glass is available in thicknesses ranging from 2 mm to 20 mm, offering flexibility for a wide range of application requirements. The standard shape is circular.

Q What is the thermal expansion coefficient of this quartz glass, and why does it matter?

The low thermal expansion coefficient is 5.5 × 10⁻⁷ cm/cm·°C. This extremely low value means the glass experiences minimal dimensional change under temperature fluctuations, making it highly resistant to thermal shock — a critical property for precision optical and industrial applications.

Q What are the key mechanical strength properties of this fused quartz glass?

The glass features a compressive strength of 1100 MPa and a Young's modulus of 72,000 MPa, indicating excellent rigidity and load-bearing capability. Its Mohs hardness of 5.5–6.5 also ensures good surface durability under abrasive conditions.

Q What surface quality standards does this quartz glass meet?

The quartz glass is produced to a high surface quality standard — transparent or colorless with no air bubbles and no lines. This ensures optical clarity and structural integrity, making it suitable for use in optical instruments, semiconductor processing, and laboratory equipment.

High-Quality High-Temperature Resistant Quartz Lamp Holder - China Suppliers & Factory for Industrial Use Manufacturer, Factory

Product Description

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