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High-Quality Fused Silica Quartz Plates from China Suppliers - Heat Resistant Factory Products

Quartz sheets, produced by our factory in China, are crafted from high-purity silicon dioxide (SiO₂) known for their excellent properties such as high temperature resistance, superior light transmittance, and a low coefficient of expansion. These quartz plates, often referred to as fused quartz or quartz glass plates, are customizable in size and thickness to suit various applications. Widely utilized in sectors like optical windows, semiconductor manufacturing, and laboratory glassware, our quartz sheets are essential components in optoelectronic devices and scientific research equipment. As leading suppliers in the industry, we ensure high-quality products tailored to meet the rigorous demands of our customers

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

📐 All dimensions are in millimeters (mm). Tolerances may vary depending on material grade and manufacturing process. Please consult our technical team for custom 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

Q What do the dimensional tolerances in this 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 may be up to 0.1 mm larger or smaller than the nominal value, ensuring parts fit within acceptable limits for their application.

Q Why do larger sizes have wider tolerances?

As the size of a part increases, it becomes more challenging to maintain the same level of precision during manufacturing. Larger pieces are subject to more variability from thermal expansion, material properties, and machining limitations, which is why tolerances widen from ±0.1 mm for smaller sizes up to ±0.5 mm for 200×200 mm dimensions.

Q Can I request a custom size not listed in this table?

Yes, custom sizes are available upon request. The standard sizes listed in this table represent our most commonly stocked dimensions. For non-standard sizes, please contact our technical team to discuss feasibility, lead times, and applicable tolerances for your specific requirements.

Q What is the thinnest standard thickness available, and for which sizes?

The thinnest standard thickness available is 0.5 mm, which is offered for the 10×10 mm and 20×20 mm sizes. Smaller dimensions are better suited for thinner profiles due to the structural integrity requirements of the material at larger sizes.

Q How are thickness tolerances different from dimensional tolerances?

Dimensional tolerances apply to the length and width (the planar dimensions) of a part, while thickness tolerances refer specifically to the allowable deviation in the depth or height of the material. Both are critical for ensuring proper fit and function, but they are controlled through different manufacturing processes and tools.

Q Are tighter tolerances available for high-precision applications?

Yes, tighter tolerances beyond the standard specifications can be achieved for high-precision applications. This may involve additional processing steps, specialized equipment, or material selection. Please reach out to our engineering team with your specific tolerance requirements, and we will provide a tailored solution and quotation.

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.