Your Professional Ceramic Tube Supplier
Established in 2002, Yixing Xiongyu Ceramics Co., Ltd. (formerly Suzhou Jingchuang Ceramics Co., Ltd.) specializes in the research, development, production, and sales of high-performance industrial ceramics and precision ceramic parts. Located in Dingyu Town, Yixing City, Jiangsu Province—renowned as the "Ceramic Capital"—the company benefits from over 20 years of industry expertise. We operate advanced production lines, including automated molding and precise sintering technologies. Our factory is equipped with state-of-the-art equipment to manufacture talc ceramics, alumina, and zirconia products known for their exceptional high-temperature resistance, insulation, and wear resistance. Our products serve diverse industries including automotive, lighting, and personal care.
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![High Alumina Ceramic Tube]()
High Alumina Ceramic TubeAlumina tube is a key functional tubular material widely used in high-precision industrial fields, with its core raw material being high-purity alumina—where the Al₂O₃ content is usually no less thanread more -
![Al2o3 Ceramic Tube]()
Al2o3 Ceramic TubeAlumina ceramic tube is a versatile industrial ceramic component, categorized in the industry by its alumina content into grades such as 92 ceramic, 95 ceramic, and 99 ceramic, with common colorsread more -
![High Temperature Ceramic Tube]()
High Temperature Ceramic TubeHigh temperature ceramic tube is a specialized tubular component engineered exclusively for extreme thermal environments, with its core material selection tailored to withstand long-term exposure toread more
why choose us
State-of-the-Art Production Facilities
Equipped with advanced automated molding and kiln sintering technologies, our factory ensures consistent product quality and precise control over the manufacturing process.
Sales Market
Our products are widely distributed across mainland China and have successfully entered international markets, including Japan, India, and Russia, supported by stable, long-term partnerships with renowned enterprises.
Our Certificate
We maintain high standards of quality through rigorous compliance with ISO 9001, guaranteeing reliability and consistency in every product we manufacture.
Service Advantages
From pre-sale consultation to post-sale support, we offer tailored solutions, real-time production updates, and efficient problem resolution to ensure smooth cooperation at all stages.
Alumina ceramic tube is made of Aluminum Oxide(Al2O3), which is a white or ivory white ceramic that has been applied to electrical components from an early stage by taking advantage of its good electrical insulation properties, besides, ceramic tubes made of high alumina have also high resistance to temperature, heat, wear and corrosion, and alumina ceramic is the cheapest material among the fine technical ceramics.
|
Item |
T92® |
T95® |
T99® |
T997® |
|
Al2O3 Content -% |
92 |
95 |
99 |
99.7 |
|
Density (g/cm3) |
3.6 |
3.7 |
3.81 |
3.85 |
|
Bending Strength (MPa) |
312 |
304 |
340 |
370 |
|
Coefficient of linear expansion (×10-6/℃) (25-800℃) |
7.5 |
7.3 |
7.6 |
7.6 |
|
Thermal conductivity [w/ (m.R)] |
18 |
20 |
34 |
35 |
|
Insulation strength (KV/ mm) |
10 |
10 |
10 |
10 |
|
Volume resistivity (Ω.cm) 20℃ |
＞1014 |
＞1014 |
＞1014 |
＞1014 |
|
300℃ |
＞1013 |
＞1012 |
＞1010 |
＞1010 |
|
Using Temperature (℃) |
1390 |
1480 |
1600 |
1700 |
|
Hardness (Mohs) |
8.5 |
8.8 |
9 |
9 |
|
Refractoriness |
1920 |
2000 |
2030 |
2040 |
Outstanding Mechanical Properties
Alumina ceramic tubes exhibit extremely high hardness, with a Mohs hardness rating of 8–9, far surpassing the wear resistance of many metals. For example, in oil drilling, slurry transport pipes made of alumina ceramic withstand high-speed particle erosion, significantly extending service life. Additionally, their excellent compressive strength ensures stable operation in high-pressure environments, such as high-pressure gas delivery systems.
Superior Chemical Stability
These ceramic tubes demonstrate strong corrosion resistance against most acids, alkalis, salts, and other chemical media. Whether in strong-acid chemical production or high-alkaline industrial wastewater treatment, their chemical stability prevents corrosion. This makes them highly favored in chemical and environmental industries, ensuring long-term equipment reliability and reducing maintenance costs.
Excellent High-Temperature Resistance
Alumina ceramic tubes maintain structural and performance stability at high temperatures, enduring up to 1600°C or even higher. In steelmaking furnaces, they serve as high-temperature gas delivery pipelines or structural components, adapting to harsh thermal environments and enhancing production efficiency.
Advantages of Alumina Ceramic Tube
High hardness of alumina ceramics
As determined by the Shanghai Institute of Silicate, Chinese Academy of Sciences, its Rockwell hardness is HRA80-90, second only to diamond, and its wear resistance far exceeds that of wear-resistant steel and stainless steel.
Alumina ceramics have very good wear resistance
As measured by the Institute of Powder Metallurgy of Central South University, its wear resistance is 266 times that of manganese steel and 171.5 times that of high-chromium cast iron.
Alumina ceramics are lightweight
The density of alumina electronic ceramics is 3.5g/cm3, which is only half of that of steel, which can greatly reduce the load of equipment.
High-Purity Alumina Tubes
Composed of 99.5% or higher aluminum oxide, these tubes offer maximum chemical stability and electrical insulation.
Pre-Fired (Green) Alumina Tubes
Manufactured from unfired alumina clay, these "green" tubes are dimensionally stable before sintering and used in forming processes.
Sintered (After-Fire) Alumina Tubes
Produced by firing alumina at high temperatures (typically above 1600°C), resulting in dense, durable ceramic structures.
Transparent Alumina Tubes
Engineered with a fine-grained, fully dense microstructure that allows visible light transmission while maintaining ceramic strength.
Porous Alumina Tubes
Designed with controlled porosity (ranging from micro- to macro-pores), these tubes function as advanced filtration and separation media.
Applications of Alumina Ceramic Tube
Electronics
In the electronics industry, alumina ceramic tubes serve as critical insulating components in high-reliability devices. They are used to manufacture insulators for wiring systems, feedthroughs, capacitor housings, and semiconductor processing equipment. Their ability to maintain electrical isolation under high voltage and temperature fluctuations ensures device safety and operational stability.
Aerospace
In aerospace engineering, alumina ceramic tubes are integral to thermal protection systems (TPS) for spacecraft and re-entry vehicles. During atmospheric re-entry, surface temperatures can exceed 1600°C, and alumina’s ability to withstand such extremes protects internal components and avionics.
Biomedical
Alumina ceramic tubes are widely used in medical implants and prosthetics, including hip joint replacements, dental implants, and bone repair devices. Their biocompatibility means they do not trigger adverse immune responses, allowing safe integration with human tissue.
Industrial Heaters
Sintered (or "after-fire") alumina tubes are a preferred material for manufacturing high-temperature heating elements. Used in electric furnaces, kilns, and heat treatment equipment, these tubes encapsulate resistance wires (such as Kanthal or Nichrome), protecting them from oxidation and mechanical damage.
Emerging Applications
Alumina ceramic tubes are finding new roles in energy and environmental technologies. They are used in solid oxide fuel cells (SOFCs) as electrolyte supports and gas separation membranes. In nuclear applications, they serve as insulating sleeves for instrumentation in reactor cores due to their radiation resistance.
Manufacturing Process of Alumina Ceramic Tubes
Raw Material Selection and Processing
High-purity alumina powder (typically over 95%, even exceeding 99%) is used as the base material. Prior to processing, the powder undergoes ball milling to refine particle size and chemical purification to remove impurities, ensuring uniformity and enhanced molding performance for superior ceramic tube quality.
Forming Process
Isostatic Pressing: A liquid medium applies uniform pressure to compact raw powder placed in an elastic mold within a high-pressure vessel. This method ensures uniform density and exceptional performance in the formed green body, making it ideal for producing large-sized, high-performance ceramic tubes.
Maintenance
Prevent Mechanical Shock
While strong under compression, alumina ceramics are brittle. Avoid impacts or sudden stress that could cause chipping or cracking.
01
Control Thermal Gradients
Minimize rapid temperature changes to prevent thermal shock. Allow gradual heating and cooling cycles, especially in furnace applications.
02
Clean Properly
Use non-abrasive cleaners and soft cloths. Avoid chloride-based or highly acidic solutions unless specified for porous variants.
03
Inspect Regularly
Check for microcracks, discoloration, or erosion—especially in filtration and heating systems—to ensure continued performance and safety.
04
Use Correct Fixtures
Mount tubes using compliant or floating supports to accommodate slight thermal expansion and reduce stress points.
05
FAQ
As one of the leading ceramic tube manufacturers and suppliers in China, we warmly welcome you to wholesale bulk high-grade ceramic tube made in China here and from our factory. All customized products are with high quality and competitive price. Contact us for pricelist and free sample.
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