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High-Quality Fused Silica Quartz Plates from China - Top Suppliers and Factory for Optical and Semiconductor Applications

Quartz sheets, sourced from high-purity quartz material, are renowned for their exceptional properties, including high temperature resistance, superior light transmittance, and a low coefficient of expansion. Our quartz plates can be fully customized in size and thickness to meet diverse industrial needs. Widely utilized in optical windows, semiconductor manufacturing processes, laboratory glassware, and various other applications, these sheets are essential components for optoelectronic devices and scientific research equipment, As a leading factory and supplier in China, we manufacture high-quality quartz plates, also known as fused quartz plates or quartz glass plates. Our production process involves melting natural or synthetic high-purity silicon dioxide (SiO₂) and transforming it into meticulously cut and polished flat panels. Trust our expertise and commitment to quality for all your quartz sheet requirements

Product Description

Material & Quality

Made from 99.99% high-purity fused silica, our large-diameter quartz tube is free of impurities, ensuring minimal thermal expansion and maximum resistance to thermal shock (can withstand rapid temperature changes from -20℃ to 1200℃). It is non-toxic, non-porous, and resistant to most acids (except hydrofluoric acid) and alkaline solutions, making it suitable for corrosive chemical processing.

Core Advantages

Superior thermal stability: Operates continuously at 1100℃, short-term use up to 1450℃
Excellent mechanical strength: High compressive strength and impact resistance, cracking during installation and use
Customization support: Cut-to-length, flanged ends, and drilled holes available per customer drawings
Long service life: Resists aging and oxidation even under prolonged high-temperature exposure

Key Application Fields of Large-Diameter Quartz Tubes

Large-diameter quartz tubes are essential components in various high-end industries, thanks to their excellent thermal stability, chemical inertness and high light transmittance.

Semiconductor Industry

They are widely used in diffusion furnaces, oxidation furnaces and ion implantation equipment for wafer processing. The high purity and corrosion resistance of quartz tubes can ensure no pollution to semiconductor materials during high-temperature processes.
Solar Energy Sector

Applied to the production line of photovoltaic cells and silicon wafers, they serve as the core components of high-temperature sintering and coating equipment, helping to improve the conversion efficiency of solar cells.
High-Temperature Heat Treatment & Metallurgy

Used as furnace linings and heating chambers in annealing furnaces, quenching furnaces and sintering furnaces, they can withstand continuous high-temperature operation up to 1100℃ and resist thermal shock.
Laboratory & Scientific Research

Employed in high-temperature chemical reactors, vacuum tubes and chemical vapor deposition (CVD) systems, suitable for harsh experimental environments such as strong acid corrosion and high-temperature pyrolysis.
Optical Fiber & Optoelectronics Industry

Serve as protective sleeves and drawing molds in optical fiber preform production, ensuring the purity and uniformity of optical fiber materials during the high-temperature drawing process.
Environmental Protection & Waste Treatment

Used in high-temperature waste gas incinerators and hazardous waste treatment equipment, taking advantage of their high-temperature resistance and chemical stability to decompose harmful substances.

Product Specifications

Product Details

📐 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

💡 All dimensions and tolerances are listed in millimeters (mm). Tolerances may vary depending on material grade and manufacturing process. Please contact us for custom sizes or special tolerance requirements.

❓ Frequently Asked Questions

🔹 What do the dimensional tolerances in this table mean?

✅ Dimensional tolerances indicate the acceptable range of deviation from the specified length and width. For example, a tolerance of ±0.1 mm means the actual dimension can be up to 0.1 mm larger or smaller than the stated value, ensuring consistent fit and performance in precision applications.

🔹 Why do larger sizes have greater dimensional tolerances?

✅ As the size of a piece increases, maintaining the same absolute tolerance becomes more challenging due to material behavior, thermal expansion, and manufacturing process limitations. Therefore, larger dimensions such as 150×150 mm and 200×200 mm naturally carry slightly wider tolerances (±0.3 ~ ±0.5 mm) compared to smaller pieces.

🔹 Are custom sizes available beyond those listed in the table?

✅ Yes. The table lists our standard size offerings. Custom dimensions outside of these specifications can be produced upon request. Please contact our technical team with your specific size and tolerance requirements, and we will provide a feasibility assessment and quotation.

🔹 What standard thicknesses are available for the smallest size (10×10 mm)?

✅ For the 10×10 mm size, standard thicknesses of 0.5 mm, 1.0 mm, and 2.0 mm are available. The thickness tolerance for this size ranges from ±0.05 mm to ±0.1 mm, making it suitable for applications requiring very fine precision.

🔹 How should I select the right thickness for my application?

✅ The appropriate thickness depends on your application's mechanical load requirements, thermal management needs, and space constraints. Thinner options (0.5–1.0 mm) are ideal for compact assemblies, while thicker options (3.0–5.0 mm) provide greater structural rigidity and heat dissipation. Our engineering team can assist with material selection recommendations.

🔹 Are the thickness tolerances the same across all sizes and thicknesses?

✅ Not exactly. Thickness tolerances vary depending on both the size and the specific thickness value. Smaller pieces with thinner profiles typically achieve tighter tolerances (±0.05 mm), while larger or thicker pieces may have tolerances up to ±0.2 mm. The table provides a clear reference range for each size category.

Packaging and Shipping

Why Choose Southeast Quartz?

Southeast Quartz relies on the superior high-quality quartz ore resources in Donghai County, deeply engages in the deep processing of quartz glass, and has become a core supplier to global customers. All products undergo multiple tests such as helium mass spectrometry leak detection, pressure resistance test, and purity test before leaving the factory to ensure stable performance, no impurities, and no leakage.