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.

Wholesale High-Quality Fused Silica Quartz Plate - Heat Resistant | China Suppliers & Factory Supplier, Products

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Wholesale High-Quality Fused Silica Quartz Plate - Heat Resistant | China Suppliers & Factory Supplier, Products

Our high-quality quartz sheets are manufactured in China using premium high-purity silicon dioxide (SiO₂), ensuring exceptional temperature resistance, high light transmittance, and a low coefficient of expansion. Available in various customizable sizes and thicknesses, these quartz plates are essential components utilized in optical windows, semiconductor manufacturing processes, laboratory glassware, and other advanced applications. As a leading supplier and factory in the industry, we are committed to providing top-notch quartz products for optoelectronic and scientific research equipment.

Fused quartz plates, renowned for their durability and clarity, are produced by melting both natural and synthetic high-purity quartz, followed by precise cutting and polishing to achieve flat panels. Whether you're in need of specialized quartz solutions or standard products, our factory guarantees reliability and excellence tailored to your requirements.

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Product Description

Product Specifications

📐 All dimensions are in millimeters (mm). Tolerances are strictly controlled to ensure precision and consistency across all standard sizes.

📏Length × Width (mm)	🔧Dimensional Tolerances (mm)	📦Standard Thickness (mm)	⚙️Thickness Tolerances (mm)
10 × 10	±0.1	0.5 / 1.0 / 2.0	±0.05 ~ ±0.1
20 × 20	±0.1	0.5 / 1.0 / 2.0 / 3.0	±0.05 ~ ±0.1
30 × 30	±0.1	1.0 / 2.0 / 3.0	±0.05 ~ ±0.1
40 × 40	±0.1 ~ ±0.2	1.0 / 2.0 / 3.0 / 4.0	±0.08 ~ ±0.1
50 × 50	±0.1 ~ ±0.2	1.0 / 2.0 / 3.0 / 5.0	±0.08 ~ ±0.1
60 × 60	±0.2	2.0 / 3.0 / 5.0	±0.1
80 × 80	±0.2	2.0 / 3.0 / 5.0	±0.1
100 × 100	±0.2 ~ ±0.3	2.0 / 3.0 / 5.0	±0.1
150 × 150	±0.3	3.0 / 5.0	±0.1 ~ ±0.2
200 × 200	±0.3 ~ ±0.5	3.0 / 5.0	±0.1 ~ ±0.2

❓ Frequently Asked Questions

🔵 What is the smallest available size listed in the specification table?

✅ The smallest available size is 10×10 mm, which supports standard thickness options of 0.5 mm, 1.0 mm, and 2.0 mm, with a dimensional tolerance of ±0.1 mm.

🔵 Which size offers the most standard thickness options?

✅ The 20×20 mm and 40×40 mm sizes each offer four standard thickness options, making them among the most versatile in the range.

🔵 How do dimensional tolerances change as the size increases?

✅ Generally, dimensional tolerances increase with size. Smaller sizes (10×10 to 30×30 mm) maintain a tight ±0.1 mm tolerance, while larger sizes (150×150 to 200×200 mm) allow up to ±0.3–±0.5 mm tolerance.

🔵 What is the thinnest available standard thickness across all sizes?

✅ The thinnest standard thickness is 0.5 mm, available for the 10×10 mm and 20×20 mm sizes only.

🔵 Are custom sizes or thicknesses available outside of the standard specifications?

✅ The table reflects standard available specifications. For custom dimensions or thicknesses not listed, please contact our technical team directly to discuss your specific requirements.

🔵 What thickness tolerance should I expect for larger sizes like 150×150 mm or 200×200 mm?

✅ For the 150×150 mm and 200×200 mm sizes, the thickness tolerance ranges from ±0.1 mm to ±0.2 mm, reflecting the increased manufacturing complexity associated with larger dimensions.

Wholesale High-Quality Fused Silica Quartz Plate - Heat Resistant | China Suppliers & Factory Supplier, Products

Product Description

Product Specifications

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