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High Purity Fused Silica Quartz Rods from China Suppliers & Factory for Semiconductor and Laboratory Applications

High Purity Fused Silica Quartz Rods from China Suppliers & Factory for Semiconductor and Laboratory Applications

Introducing our high-performance quartz rod, a cylindrical product crafted from premium fused silica (SiO₂ ≥ 99.99%). Renowned for its exceptional high-temperature resistance, with a softening point of approximately 1730°C and the ability to endure long-term usage at 1100°C, this quartz rod is ideal for a wide range of applications. Its excellent UV-IR transmittance, low thermal expansion, and outstanding chemical inertness—resistant to most acids except HF—make it a perfect choice for demanding environments. Additionally, it provides superior electrical insulation. Our quartz rods are extensively utilized in optics, semiconductors, lasers, laboratory instruments, and high-temperature equipment, solidifying their role as an essential material for precision engineering.

Produced by melting natural or synthetic quartz, our quartz rods are shaped into solid cylinders through advanced drawing or molding processes. As a leading factory and supplier in China, we provide high-purity silicon dioxide rods that serve as fundamental semi-finished materials. These rods can be further fabricated into tubes, supports, or optical components, tailored to meet the specific needs of various 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

Cross-sectional Dimensions	Tolerances	Standard Lengths
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

Q What cross-sectional dimensions are available?

Available cross-sectional dimensions range from 3×3 up to 20×20, covering sizes including 3×3, 4×4, 5×5, 6×6, 8×8, 10×10, 15×15, and 20×20.

Q What are the standard tolerances across different dimensions?

Standard tolerances vary according to the cross-sectional size: ±0.1 for sizes 3×3 to 5×5, ±0.15 for 6×6 and 8×8, ±0.2 for 10×10 and 15×15, and ±0.25 for 20×20.

Q What are the available standard lengths for profiles up to 10×10?

For cross-sectional dimensions ranging from 3×3 up to 10×10, the standard length range is 100–1000.

Q What are the standard lengths for larger profiles (15×15 and 20×20)?

For larger cross-sections such as 15×15 and 20×20, standard lengths are specified in the range of 100–500.

Q How does the cross-sectional size impact tolerance specifications?

As the cross-sectional dimensions increase from 3×3 to 20×20, the tolerance incrementally scales from ±0.1 to ±0.25 to maintain optimal manufacturing precision.

Q Which sizes achieve the tightest tolerance of ±0.1?

The tightest tolerance standard of ±0.1 is achieved on cross-sectional dimensions of 3×3, 4×4, and 5×5 within standard lengths of 100–1000.

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.