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High Purity Quartz Rods from China - Fused Silica Rods for Semiconductor & Laboratory | Reliable Suppliers & Factory

High Purity Quartz Rods from China - Fused Silica Rods for Semiconductor & Laboratory | Reliable Suppliers & Factory

Our quartz rods are high-performance cylindrical products made from premium fused silica (SiO₂ ≥ 99.99%), manufactured in our state-of-the-art factory in China. These rods exhibit exceptional high-temperature resistance, with a softening point around 1730°C and the capability for long-term use at temperatures up to 1100°C. They offer excellent UV and IR transmittance, low thermal expansion, and remarkable chemical inertness, being resistant to most acids (excluding HF). Additionally, quartz rods provide outstanding electrical insulation properties.

As a leading supplier of quartz products, we produce quartz rods through advanced melting and molding techniques, ensuring the highest quality. These rods are fundamental semi-finished materials, ideal for further fabrication into optical components, tubes, and supports tailored for various applications.

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

Cross-sectional Dimensions (mm)	Tolerances (mm)	Standard Lengths (mm)
3 × 3	±0.1	100–1000
4 × 4	±0.1	100–1000
5 × 5	±0.1	100–1000
6 × 6	±0.15	100–1000
8 × 8	±0.15	100–1000
10 × 10	±0.2	100–1000
15 × 15	±0.2	100–500
20 × 20	±0.25	100–500

Frequently Asked Questions (FAQ)

What measurement units are used in the specification table?

All cross-sectional dimensions, dimensional tolerances, and standard lengths in the table are specified in millimeters (mm).

Why do tolerances vary across different cross-sectional sizes?

Tolerances scale proportionally with the cross-sectional area (ranging from ±0.1 mm for smaller profiles up to ±0.25 mm for 20×20 mm) to account for standard manufacturing and material expansion variances.

Why are standard lengths shorter for larger cross-sections like 15×15 and 20×20?

Larger sections (15×15 and 20×20 mm) are standardized up to 500 mm to optimize structural integrity, ease of handling, and consistency during fabrication processes.

Can custom lengths outside the standard ranges be ordered?

Yes, precision cut-to-length options and custom non-standard dimensions can be provided upon request according to specific engineering requirements.

How is quality control maintained for dimensional accuracy?

Each batch is inspected using precision optical comparators and digital calipers to verify that all dimensions remain strictly within the specified tolerance limits.

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.