99% Alumina Ceramic Tube Al2O3 Ceramic Pipe

Alumina Ceramic Tubes are high-performance ceramic components manufactured from high-purity alumina, offering excellent electrical insulation, high-temperature resistance, wear resistance, and chemical stability. They are widely used in industrial furnaces, thermal processing equipment, electrical insulation, semiconductor equipment, laboratory equipment, and other demanding high-temperature applications.

Heat Resistant Wear-resisting High Purity Alumina 99% Al2O3 Ceramic Pipe

Overview

Alumina Ceramic Tubes are precision-engineered ceramic components made from high-purity alumina, offering excellent high-temperature resistance, electrical insulation, mechanical strength, wear resistance, and chemical stability. They maintain reliable performance under demanding thermal and electrical conditions.
Available in different alumina grades, diameters, lengths, and wall thicknesses, alumina ceramic tubes can be manufactured to meet specific dimensional and application requirements. They are suitable for high-temperature equipment, electrical insulation, thermal processing systems, laboratory equipment, and other industrial applications requiring stable performance and reliable ceramic insulation.

Alumina Ceramic Tube

Technical Specifications

Property	Specification
Material	High-Purity Alumina (Al₂O₃)
Alumina Content	Available in different grades
Maximum Service Temperature	Up to 1600°C
Flexural Strength	> 450 MPa
Compressive Strength	> 2000 MPa
Volume Resistivity	> 10¹² Ω·cm
Electrical Insulation	Excellent
Thermal Stability	Excellent
Chemical Resistance	Excellent
Wear Resistance	Excellent
Inner Diameter	Customizable
Outer Diameter	Customizable
Length	Customizable
Wall Thickness	Customizable
Surface Finish	Available according to requirements
Dimensional Tolerance	Available according to drawing/specification

Alumina ceramic tubes maintain structural integrity at sustained temperatures above 1600°C

Product Advantages

1. Excellent High-Temperature Stability

Alumina ceramic tubes maintain structural integrity at sustained temperatures above 1600°C, with low thermal expansion and outstanding thermal shock resistance. They significantly outlast metals or ordinary glass tubes in harsh environments such as high-temperature furnaces and heat exchangers.

2. Superior Mechanical Strength and Wear Resistance

Manufactured via isostatic pressing and high-temperature sintering, our tubes feature high hardness (Mohs ≥9) and excellent flexural strength, resisting particle erosion and friction wear. Ideal for continuous abrasion scenarios like pneumatic conveying and abrasive nozzles, they greatly reduce replacement intervals.

3. Outstanding Electrical Insulation

With volume resistivity >10¹⁴ Ω·cm and excellent dielectric strength, they maintain stable insulation under high-frequency and high-voltage conditions. They serve as reliable insulating structural components for electric heating elements, high-voltage fuses, and electronic packages.

4. Exceptional Chemical Corrosion Resistance

Resistant to most acids, alkalis, salt solutions, and organic solvents, with the exception of hydrofluoric acid and strong hot caustic solutions. In chemically aggressive fluid environments like chemical processing, pharmaceuticals, and hydrometallurgy, they ensure system purity and operational safety.

5. Dense, Smooth Inner Surface with Low Porosity

Achieving sintered density ≥3.9 g/cm³ and surface roughness down to Ra≤0.4μm, our tubes resist scaling, fouling, and fluid drag. This facilitates easy cleaning and maintenance, making them especially suitable for high-purity chemicals or precision fluid control systems.

Application of Alumina Ceramic Tubes

Application Areas

1. Semiconductor & Photovoltaic Manufacturing Equipment

Used in diffusion furnaces, oxidation furnaces, and LPCVD systems as high-temperature tube racks and insulating components. The high purity and metal-free characteristics ensure wafer and cell process integrity and yield.

2. High-Frequency & High-Voltage Electronic Devices

Applied in high-voltage fuse tubes, vacuum interrupter housings, and high-frequency antenna insulation supports. Their excellent dielectric strength and low high-frequency loss guarantee long-term stability in power electronic systems.

3. Industrial Heat Treatment & Thermal Processing Equipment

Used in resistance furnace tubes, thermocouple protection sheaths, and hot-air circulation pipes. Their resistance to thermal shock and oxidation extends maintenance cycles and improves thermal efficiency.

4.Chemical & Hydrometallurgical Fluid Systems

Employed in corrosive media transfer pipes, reactor liners, and filter cores. They resist strong acids, alkalis, and high-temperature salt solutions, ensuring sealing reliability and process safety in hazardous fluid environments.

5. Precision Metering & Wear-Resistant Fluid Components

Suitable for high-pressure plunger pump cylinder liners, abrasive jet nozzles, and flowmeter measuring tubes. High hardness and low friction coefficients reduce wear-induced measurement drift and extend the service life of critical parts.

JianXun WAREHOUSE

Company Profile

Luoyang JianXun Tech Co., Ltd. is a professional new material supplier dedicated to the research, development, production, and global distribution of advanced ceramic materials, powder metallurgy products, and nano-scale functional materials. Headquartered in Luoyang, Henan Province — a renowned industrial hub in central China — the company benefits from a complete supply chain ecosystem and convenient logistics networks, enabling efficient delivery to customers worldwide.

In the field of alumina ceramic tubes, we possess a fully integrated manufacturing capability covering powder formulation, isostatic pressing, high-temperature sintering, and precision grinding. Our products are primarily based on 95% and 99% high-purity alumina, offering excellent high-temperature resistance (sustained operation above 1600°C), high electrical insulation (volume resistivity >10¹⁴ Ω·cm), as well as outstanding wear resistance and chemical corrosion resistance. These tubes are widely applied in semiconductor diffusion furnace tubes, high-voltage fuse housings, thermocouple protection sheaths, chemical fluid transfer pipes, and high-pressure plunger pump cylinder liners. We support non-standard customization of ID, OD, length, slots, holes, and metallization, with rapid prototyping and stable batch production capabilities. Our solutions are fully compatible with OEM/ODM requirements, helping customers shorten assembly and commissioning lead times.

Payment Terms

T/T, Paypal, Credit Card, Western Union, etc.

Shipment Terms

By air, by sea, by express, as per customer request.

Storage Conditions

Store in a clean, dry, and well-ventilated indoor environment with relative humidity ≤65% and temperature between 5°C and 40°C. Products are packaged with PE foam liners and sealed plastic bags; do not open the packaging before use. If the packaging is damaged or the tubes have been exposed to moisture for an extended period, bake at 120°C~150°C for 2~4 hours before use to restore insulation performance. As alumina ceramic tubes are brittle materials, handle with care during storage and transportation, avoiding impact, stacking, or bending stress. Long tubes should be stored horizontally on V-shaped supports. Under the above conditions, products can be stored long-term; FIFO inventory practice is recommended.

FAQs About Alumina Ceramic Tubes

1. What temperature can alumina ceramic tubes withstand?

High-purity alumina ceramic tubes can withstand temperatures up to 1600°C, depending on the alumina grade, tube dimensions, atmosphere, and operating conditions.

2. What are alumina ceramic tubes used for?

Alumina ceramic tubes are commonly used in high-temperature furnaces, thermocouple protection, electrical insulation, thermal processing equipment, and laboratory equipment.

3. Are alumina ceramic tubes good electrical insulators?

Yes. Alumina has excellent electrical insulation properties and high volume resistivity, making it suitable for electrical insulation applications, including high-temperature environments.

4. Can alumina ceramic tubes be customized?

Yes. Inner diameter, outer diameter, length, wall thickness, tube shape, and material grade can be customized according to drawings or specific application requirements.

5. How should alumina ceramic tubes be handled and used?

Alumina ceramic is hard but brittle. Avoid strong impact, excessive mechanical stress, and sudden heating or cooling to reduce the risk of cracking.