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 Suppliers in China – Heat Resistant Factory for Optical and Semiconductor Applications Manufacturers, Supplier

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Wholesale High-Quality Fused Silica Quartz Plate Suppliers in China – Heat Resistant Factory for Optical and Semiconductor Applications Manufacturers, Supplier

Our high-quality quartz sheets, sourced from top suppliers in China, are crafted from high-purity silicon dioxide (SiO₂). Known for their exceptional temperature resistance, high light transmittance, and low coefficient of expansion, these quartz sheets are ideal for various applications, including optical windows, semiconductor manufacturing, and laboratory glassware. Manufactured in our state-of-the-art factory, these customizable quartz plates can be tailored to specific sizes and thicknesses, making them essential components for optoelectronic devices and scientific research equipment.

As a leading factory in China, we specialize in producing fused quartz plates, also referred to as quartz glass plates. Each sheet is meticulously created by melting premium quartz and then precisely cutting and polishing the material into flat panels, ensuring optimal performance for a wide range of industries.

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Product Description

⚙️ Product Specifications

📐 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

Q What do the dimensional tolerances in this specification table mean?

Dimensional tolerances refer to the allowable deviation from the specified length and width measurements. For example, a tolerance of ±0.1 mm means the actual dimension can be 0.1 mm larger or smaller than the stated size, ensuring consistent fit and assembly performance.

Q Why do larger sizes have wider dimensional tolerances?

As the part size increases, minor variations in the manufacturing process become proportionally more significant. Larger pieces such as 150×150 mm or 200×200 mm have tolerances up to ±0.5 mm due to the greater material area and the natural challenges of maintaining precision at scale.

Q What standard thicknesses are available for small sizes like 10×10 mm?

For the 10×10 mm size, standard thickness options are 0.5 mm, 1.0 mm, and 2.0 mm. Smaller sizes generally support thinner options, giving designers flexibility for compact or lightweight applications.

Q Can custom sizes or thicknesses outside this table be ordered?

The table reflects standard production specifications. For custom dimensions or thicknesses not listed, it is recommended to contact the manufacturer directly to discuss feasibility, minimum order quantities, and applicable tolerances for non-standard configurations.

Q How are thickness tolerances different from dimensional tolerances?

Dimensional tolerances apply to the length and width of the part, while thickness tolerances specifically control the variation in the depth or height of the material. Both are critical for ensuring proper stacking, sealing, and mechanical performance in precision assemblies.

Q Which size offers the most thickness options?

The 40×40 mm size offers the most thickness variety, available in 1.0 mm, 2.0 mm, 3.0 mm, and 4.0 mm. The 20×20 mm size also provides four options: 0.5 mm, 1.0 mm, 2.0 mm, and 3.0 mm, making both sizes highly versatile for multi-application use.

Wholesale High-Quality Fused Silica Quartz Plate Suppliers in China – Heat Resistant Factory for Optical and Semiconductor Applications Manufacturers, Supplier

Product Description

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