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 Purity Quartz Rod / Fused Silica Rod for Semiconductor & Laboratory - China Suppliers & Factory Products Manufacturers, Supplier

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High-Quality High Purity Quartz Rod / Fused Silica Rod for Semiconductor & Laboratory - China Suppliers & Factory Products Manufacturers, Supplier

Our high-performance quartz rods are manufactured from premium fused silica (SiO₂ ≥ 99.99%), making them a top choice among suppliers in China. These cylindrical products are renowned for their exceptional high-temperature resistance, with a softening point of approximately 1730°C and long-term stability at temperatures up to 1100°C. Additionally, they boast excellent UV-IR transmittance, low thermal expansion, and remarkable chemical inertness, resisting most acids except hydrofluoric acid (HF). With outstanding electrical insulation properties, these quartz rods are indispensable in various applications, including optics, semiconductors, lasers, laboratory instruments, and high-temperature equipment. Sourced directly from our factory, they serve as essential semi-finished materials for the manufacturing of tubes, supports, and optical components, ensuring precision and reliability in harsh environments.

As a leading supplier in China, our quartz rods are produced by melting high-purity natural or synthetic quartz. The resulting solid rods are crafted through advanced drawing or molding techniques, offering unmatched quality for various industrial applications.

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Product Description

Product Specifications

Cross-Sectional Dimensions, Tolerances & Standard Lengths

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

All dimensions are in millimeters (mm). Tolerances may vary depending on material grade and manufacturing process. Standard lengths are indicative; custom lengths may be available upon request.

Frequently Asked Questions (FAQ)

❓ What do the cross-sectional dimensions refer to?

The cross-sectional dimensions (e.g., 3×3, 10×10) refer to the width and height of the material's cross-section in millimeters. These are the standard square profiles available for selection.

❓ What does the tolerance value (±) mean?

The tolerance value indicates the permissible deviation from the nominal dimension during manufacturing. For example, ±0.1 mm means the actual size may be up to 0.1 mm larger or smaller than the specified dimension.

❓ Why do larger sizes have higher tolerance values?

As dimensions increase, slight variations in material expansion, machining, and processing become more pronounced. Larger cross-sections therefore carry slightly wider tolerances to account for these natural manufacturing variables.

❓ Why are standard lengths shorter for larger cross-sections (15×15 and 20×20)?

Larger cross-sections are heavier and more difficult to handle in longer lengths. The maximum standard length is reduced to 500 mm for 15×15 and 20×20 profiles to ensure safe handling, structural integrity, and practical usability.

❓ Can I order custom lengths outside of the standard range?

Custom lengths may be available upon request depending on the material and production capacity. Please contact us directly to discuss your specific requirements and confirm availability for non-standard lengths.

❓ Are all dimensions listed in millimeters?

Yes, all cross-sectional dimensions, tolerances, and standard lengths in the table are expressed in millimeters (mm), which is the standard unit used for precision component specifications.

High-Quality High Purity Quartz Rod / Fused Silica Rod for Semiconductor & Laboratory - China Suppliers & Factory Products Manufacturers, Supplier

Product Description

Product Specifications

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