Alumina ceramic, also known as Al2O3 ceramic or aluminium oxide ceramic, is an incredibly versatile technical ceramic material that is used in all kinds of industries. It offers so many benefits, including being highly strong, with excellent dielectric properties, and exceptional wear and corrosion resistance, as well as remarkable heat resistance. Alumina ceramic is one of the hardest and most wear-resistant materials on the planet, and it is so tough that diamond tools are required to machine it after sintering. Its incredible versatility allows it to be used in a wide range of industries, from machinery and electrical and electronics to semiconductors, petroleum, chemicals, textiles, and more.

The Wear Resistant Al₂O₃ Alumina Ceramic Sleeve is a high-performance component made from aluminum oxide with purity ranging from 92% to 99%. These sleeves are engineered to serve as internal linings in pipelines, fittings, elbows, and machinery parts that face constant abrasion, corrosion, or thermal stress.

Thanks to their ultra-hard ceramic matrix (Mohs hardness > 9), Al₂O₃ sleeves effectively prevent wear caused by solid particle flows, such as fly ash, mineral slurries, cement powder, or coal dust. Their chemical inertness makes them compatible with acidic and alkaline media, while their thermal resistance enables use in high-temperature systems (up to 1500°C).

These sleeves are widely adopted in:

Pneumatic and hydraulic conveying systems
Ash handling pipelines in thermal power plants
Mineral processing lines in mining
Cement and chemical production

Sunny Steel offers these ceramic sleeves in multiple configurations, including straight tubes, flanged liners, and composite pipe sections with outer steel reinforcement. Custom sizing and seamless bonding techniques ensure maximum wear life and compatibility with existing pipework.

By incorporating wear-resistant Al₂O₃ ceramic sleeves into your system, you can drastically reduce equipment downtime, improve safety, and extend the lifecycle of components exposed to abrasive or corrosive flow media.

Frequently Asked Questions

Everything you need to know about ceramic sleeve lined pipes and their installation

The ceramic sleeves are primarily made from high-purity alumina (Al₂O₃ ≥ 95%), combined with rare earth oxides as flux, and sintered at 1700°C.

Ceramic sleeves provide excellent resistance to abrasion, high temperatures, and corrosion. They extend pipeline service life and reduce long-term maintenance costs.

They are widely used in power plants, chemical processing, mining slurry pipelines, and lithium battery powder conveying systems.

Installation includes surface cleaning, adhesive application (0.5–1 mm), ring alignment, joint sealing, and curing for over 48 hours in cold climates.

Yes, our facility supports large-diameter ceramic sleeves using advanced isostatic pressing equipment and deformation control during sintering.

Yes, we offer full customization for inner/outer diameters, wall thicknesses, lengths, and connection ends such as flanged, welded, or threaded types.