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

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.

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

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.

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.