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High-Quality Fused Silica Quartz Plates from China - Trusted Suppliers and Factory for Optoelectronic Applications

Discover high-quality quartz sheets from leading suppliers in China. Our quartz sheets, crafted from high-purity silicon dioxide (SiO₂), are renowned for their exceptional temperature resistance, high light transmittance, and low coefficient of expansion. Available in customizable sizes and thicknesses, these versatile quartz plates are essential in various applications, including optical windows, semiconductor manufacturing processes, and laboratory glassware. Sourced directly from our state-of-the-art factory, our quartz products serve as vital components for optoelectronic devices and scientific research equipment. Choose us for reliable quartz solutions that meet your specific needs

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

❓ Frequently Asked Questions

Q1 What does the dimensional tolerance mean in this specification table?

Dimensional tolerance refers 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 function in precision applications.

Q2 Why do larger sizes have greater dimensional tolerances?

As the length and width of a piece increase, minor variations in the manufacturing process are more likely to accumulate. Therefore, larger sizes such as 150×150 mm or 200×200 mm carry a wider tolerance range (up to ±0.5 mm) compared to smaller sizes like 10×10 mm (±0.1 mm).

Q3 What standard thickness options are available for the smallest size (10×10 mm)?

The 10×10 mm size is available in three standard thickness options: 0.5 mm, 1.0 mm, and 2.0 mm. These thinner options are suitable for compact, precision applications where minimal material volume is required.

Q4 Can custom sizes or thicknesses outside of this table be ordered?

The table lists standard sizes and thicknesses available for regular production. For custom dimensions or special thickness requirements not listed, it is recommended to contact the manufacturer directly to discuss feasibility, lead times, and applicable tolerances for non-standard specifications.

Q5 What is the tightest thickness tolerance achievable according to this table?

The tightest thickness tolerance listed is ±0.05 mm, which applies to smaller sizes such as 10×10 mm and 20×20 mm with thinner profiles (0.5 mm and 1.0 mm). This level of precision is ideal for applications requiring highly accurate material thickness.

Q6 Which size offers the most thickness variety?

The 40×40 mm size offers the widest range of standard thickness options, available in 1.0 mm, 2.0 mm, 3.0 mm, and 4.0 mm. This makes it a versatile choice for applications that require flexibility in material thickness selection.

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.