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 Purity Quartz Rod / Fused Silica Rod for Semiconductor & Laboratory - China Suppliers & Factory Suppliers, Factories

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Custom High Purity Quartz Rod / Fused Silica Rod for Semiconductor & Laboratory - China Suppliers & Factory Suppliers, Factories

Introducing our high-performance quartz rod, a premium cylindrical product crafted from fused silica (SiO₂ ≥ 99.99%), sourced from leading suppliers in China. This exceptional material boasts remarkable high-temperature resistance with a softening point near 1730°C and can endure prolonged use at 1100°C. With outstanding UV-IR transmittance, low thermal expansion, and excellent chemical inertness—resistant to most acids except HF—our quartz rods are perfect for a diverse range of applications. They also provide superior electrical insulation, making them essential for optics, semiconductors, lasers, laboratory instruments, and high-temperature equipment. As a trusted factory in China, we supply quartz rods as basic semi-finished materials for further fabrication into tubes, supports, or optical components, tailored for precision and harsh-environment uses.

Our quartz rods are expertly produced by melting high-purity natural or synthetic quartz, ensuring quality and reliability in every unit. Choose our quartz rods for your next project and experience the superior performance that comes from a top-notch China supplier.

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Product Description

Product Specifications

All dimensions are in millimeters (mm). Tolerances apply to both width and height of each cross-section.

Cross-sectional Dimensions	Tolerances	Standard Lengths
3×3	±0.1	100–1000
4×4	±0.1	100–1000
5×5	±0.1	100–1000
6×6	±0.15	100–1000
8×8	±0.15	100–1000
10×10	±0.2	100–1000
15×15	±0.2	100–500
20×20	±0.25	100–500

Frequently Asked Questions

Q What do the cross-sectional dimensions in the table refer to?

The cross-sectional dimensions refer to the width × height measurements (in millimeters) of the material's profile, indicating the size of the square cross-section.

Q Why do larger cross-sectional dimensions have higher tolerances?

Larger cross-sections involve more material and are subject to greater thermal and mechanical variation during manufacturing, which naturally results in slightly wider tolerance ranges to maintain practical and cost-effective production.

Q What is the maximum standard length available for a 20×20 mm cross-section?

The maximum standard length for a 20×20 mm cross-section is 500 mm. For lengths beyond this range, custom orders may be available upon request.

Q Are custom cross-sectional dimensions or lengths available outside the listed specifications?

Yes, custom dimensions and lengths beyond the standard specifications can often be accommodated. Please contact us directly to discuss your specific requirements and get a tailored quote.

Q Do the tolerances apply to both dimensions of the cross-section equally?

Yes, the listed tolerances apply to both the width and the height of each square cross-section, ensuring consistent dimensional accuracy across the entire profile.

Q What is the minimum standard length available across all listed cross-sectional sizes?

The minimum standard length across all listed cross-sectional dimensions is 100 mm, making them suitable for a wide range of precision applications requiring shorter components.

Custom High Purity Quartz Rod / Fused Silica Rod for Semiconductor & Laboratory - China Suppliers & Factory Suppliers, Factories

Product Description

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