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Oversized Fused Quartz Tubes for High Temp Applications - China Suppliers & Factory

Discover high-quality large-diameter quartz tubes from leading suppliers in China. Our quartz tubes, crafted from high-purity quartz material, feature diameters ranging from several centimeters up to an impressive one meter. Engineered for exceptional performance, these tubes offer high temperature resistance, corrosion resistance, and superior light transmittance, making them ideal for large high-temperature furnaces. As integral components in large-scale heat treatment equipment, they are widely utilized in the fields of photovoltaics, semiconductors, and metallurgy. Partner with our factory to enhance your production capabilities with our premium quartz solutions

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

⭕Outer Diameter (mm)	📐Outer Diameter Tolerance (mm)	📏Standard Wall Thickness (mm)	🔧Wall Thickness Tolerance (mm)	📦Standard Length (mm)
200	±2.0～±3.0	6～12	±0.8～±1.2	1000～2000
250	±2.5～±3.5	8～14	±1.0～±1.5	1000～2000
300	±3.0～±4.0	8～16	±1.0～±1.5	1000～2000
350	±3.5～±4.5	10～18	±1.2～±1.8	1000～2000
400	±4.0～±5.0	10～20	±1.2～±2.0	1000～2000
450	±4.5～±5.5	12～22	±1.5～±2.0	1000～2000
500	±5.0～±6.0	12～25	±1.5～±2.5	1000～2000
600	±6.0～±8.0	15～28	±2.0～±3.0	1000～2000
700	±7.0～±9.0	18～32	±2.0～±3.0	1000～1800
800	±8.0～±10.0	20～35	±2.5～±3.5	1000～1800
900	±10.0～±12.0	22～40	±3.0～±4.0	1000～1500
1000	±12.0～±15.0	25～45	±3.0～±5.0	1000～1500

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❓ Frequently Asked Questions

Q1 What does the outer diameter tolerance mean in this specification table?

The outer diameter tolerance refers to the allowable deviation from the nominal outer diameter during manufacturing. For example, a pipe with an outer diameter of 200mm may have a tolerance of ±2.0～±3.0mm, meaning the actual diameter can vary within that range while still meeting quality standards.

Q2 Why does the standard length decrease for larger diameter pipes?

Larger diameter pipes (700mm and above) have a reduced standard length range of 1000～1800mm or 1000～1500mm due to increased weight, handling complexity, and transportation constraints. Shorter lengths help ensure safe and efficient logistics.

Q3 Can custom wall thickness be ordered outside the standard range?

Yes, custom wall thickness options beyond the listed standard ranges may be available upon request. Please contact our technical team with your specific project requirements, and we will assess feasibility based on material and manufacturing capabilities.

Q4 What is the significance of wall thickness tolerance in pipe selection?

Wall thickness tolerance indicates how much variation is permitted in the pipe wall during production. Tighter tolerances ensure more consistent performance under pressure and structural loads, which is critical for applications requiring precise engineering specifications.

Q5 Are these specifications compliant with international standards?

The dimensional tolerances listed in this table are generally aligned with common international manufacturing standards. However, specific compliance with standards such as ASTM, EN, or ISO should be confirmed based on your project requirements and regional regulations.

Q6 How do I select the right outer diameter and wall thickness for my application?

Selecting the appropriate outer diameter and wall thickness depends on factors such as operating pressure, fluid type, installation environment, and load-bearing requirements. We recommend consulting with our engineering team to match the correct specification to your specific application needs.

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.