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 Heat Resistant Quartz Lamp Holder for Industrial Use - High-Quality Supplier & Factory in China Supplier, Products

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Custom Heat Resistant Quartz Lamp Holder for Industrial Use - High-Quality Supplier & Factory in China Supplier, Products

Quartz lamp holders are crafted from high-purity quartz glass, renowned for its ability to withstand high temperatures while offering exceptional insulation and light transmittance. These lamp holders are compatible with various light sources, including halogen lamps and infrared heating lamps. As a crucial component of lighting and heating equipment manufactured by leading China suppliers, they ensure the stable operation of light sources by enduring high-temperature radiation and current surges, In addition, our quartz inner and outer lamp caps serve as essential end components for quartz lamps, such as UV, infrared, and halogen lamps. These caps are designed for efficient electrical connection, reliable sealing, and sturdy structural support. The inner cap connects directly to the internal electrode or light-emitting structure, while the outer cap provides the external connection and mounting required for optimal performance, Partner with our factory for high-quality quartz lamp holders and caps, crafted to meet industry standards and exceed your expectations

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Product Description

Max Temperature

1300°C

Compressive Strength

1100Mpa

Mohs Hardness

5.5 ~ 6.5

Purity Grade

10/20/100 PPM

Technical Specifications

Mechanical & Physical Properties	Standard Values
Density	2.2g/cm3
Compressive strength	1100Mpa
Flexural strength	67Mpa
Poisson's ratio	0.14~0.17
Young's modulus	72000Mpa
Modulus of rigidity	31000Mpa
Mohs hardness	5.5~6.5
Transformation point	1280°C
Softening Point	1780°C
Annealing point	1250°C
Specific heat (20 ~ 350 °C)	670J/kg .°C
Thermal conductivity (20 °C)	1.4W/m.°C
Index of refraction	1.4585
Low thermal expansion coefficient	5.5*10-7cm/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 10/20/100PPM
Shape	Circle
Thickness	2MM-20MM

Frequently Asked Questions

Q What is the maximum operating temperature for this Fused Quartz Glass?

This material features excellent thermal stability, with a long-term continuous use temperature of 1100°C and a short-term peak use temperature of up to 1300°C.

Q What is the purity level (PPM grade) of the Silicon Dioxide material?

The purity of our Silicon Dioxide (Natural Quartz) is strictly monitored and controlled within the PPM grades of 10, 20, or 100 PPM depending on your application requirements.

Q How does the material perform under high mechanical pressure?

It offers high mechanical strength, boasting a compressive strength of 1100 Mpa and a flexural strength of 67 Mpa, making it highly resistant to structural deformation.

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

The material has an extremely low thermal expansion coefficient of 5.5*10-7 cm/cm.°C, providing exceptional thermal shock resistance and dimensional stability under rapid temperature shifts.

Q What are the available dimensions, shapes, and surface qualities?

The standard shape is circular with a thickness range of 2mm to 20mm. The surface is highly polished, transparent, and completely free of air bubbles or lines.

Custom Heat Resistant Quartz Lamp Holder for Industrial Use - High-Quality Supplier & Factory in China Supplier, Products

Product Description

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