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 Customized Quartz Products from China Suppliers | High-Purity Quartz Instruments Factory Factory, Products

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High-Quality Customized Quartz Products from China Suppliers | High-Purity Quartz Instruments Factory Factory, Products

Quartz instruments, manufactured in China by leading suppliers, are crafted from high-purity quartz materials. Our extensive range includes quartz tubes, quartz boats, quartz crucibles, quartz reactors, quartz spiral tubes, and quartz reaction vessels. These products are renowned for their high temperature resistance, corrosion resistance, excellent light transmittance, and robust chemical stability. They find widespread applications across various industries, including semiconductors, photovoltaics, chemicals, and scientific research. As essential tools for high-temperature processing, precision synthesis, and optical experiments, our quartz instruments ensure process accuracy and the reliable operation of equipment. Trust our factory for superior quartz solutions that meet your demanding requirements

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Product Description

Quartz Glass 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 quartz glass?

A The 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. The thermal processing temperature ranges from 1750 °C to 2050 °C.

Q What material is used to manufacture this quartz glass?

A The quartz glass is made from Silicon Dioxide (Natural Quartz). It is transparent or colorless in appearance, with a surface free of air bubbles and lines.

Q What thickness options are available for this quartz glass?

A The quartz glass is available in thicknesses ranging from 2 mm to 20 mm, and is produced in a circular shape to meet various application requirements.

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

A This quartz glass features an extremely low thermal expansion coefficient of 5.5 × 10⁻⁷ cm/cm·°C, making it highly resistant to thermal shock and ideal for high-temperature applications.

Q What PPM purity grades are available for this quartz glass?

A The quartz glass is available in controlled purity grades of 10 PPM, 20 PPM, and 100 PPM, allowing customers to select the appropriate purity level based on their specific application needs.

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

A This quartz glass has a density of 2.2 g/cm³, a compressive strength of 1100 MPa, a Young's modulus of 72,000 MPa, a Mohs hardness of 5.5–6.5, and a Poisson's ratio of 0.14–0.17, demonstrating excellent structural stability and durability.

High-Quality Customized Quartz Products from China Suppliers | High-Purity Quartz Instruments Factory Factory, Products

Product Description

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