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 Semiconductors & Labs - Quality China Suppliers & Factory Supplier, Suppliers

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Custom High Purity Quartz Rod / Fused Silica Rod for Semiconductors & Labs - Quality China Suppliers & Factory Supplier, Suppliers

Our high-quality quartz rod, made from premium fused silica (SiO₂ ≥ 99.99%), offers outstanding performance for various applications. With exceptional high-temperature resistance, it maintains integrity up to 1100°C and has a softening point of approximately 1730°C. Boasting excellent UV-IR transmittance, low thermal expansion, and remarkable chemical inertness—resistant to most acids except HF—our quartz rod is ideal for use in optics, semiconductors, lasers, lab instruments, and high-temperature equipment. This makes it a vital material for precision tasks and harsh environments, provided by trusted suppliers and manufacturers in China.

Produced by melting natural or synthetic quartz, our quartz rods are crafted into cylindrical components through advanced drawing or molding techniques. As essential semi-finished materials, they can be easily fabricated into tubes, supports, or optical components, meeting the diverse needs of industries.

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Product Description

📊 Product Specifications

📐 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

🔹 What do the cross-sectional dimensions refer to?

The cross-sectional dimensions (e.g., 3×3, 5×5) indicate the width and height of the material's cross-section in millimeters. These measurements define the physical size profile of the product.

🔹 What does the tolerance value mean?

Tolerance refers to the permissible deviation from the specified dimension. For example, a tolerance of ±0.1 mm means the actual dimension can be 0.1 mm larger or smaller than the nominal value, ensuring consistent quality and fit.

🔹 Why do larger dimensions have higher tolerance values?

As cross-sectional dimensions increase, achieving the same level of precision becomes more challenging during manufacturing. Therefore, larger sizes such as 20×20 carry a slightly wider tolerance of ±0.25 mm compared to smaller sizes.

🔹 What are the standard length ranges available?

Most sizes are available in standard lengths ranging from 100 mm to 1000 mm. Larger cross-sections (15×15 and 20×20) are available in lengths from 100 mm to 500 mm. Custom lengths may be available upon request.

🔹 Can I order a size or length not listed in the table?

The table reflects standard stock dimensions and lengths. For custom cross-sectional sizes or non-standard lengths beyond the listed range, please contact our team directly to discuss your specific requirements and feasibility.

🔹 Are the dimensions and tolerances compliant with international standards?

Yes, the listed dimensions and tolerances are manufactured in accordance with recognized international precision standards. This ensures compatibility and reliability across a wide range of industrial and engineering applications.

Custom High Purity Quartz Rod / Fused Silica Rod for Semiconductors & Labs - Quality China Suppliers & Factory Supplier, Suppliers

Product Description

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