Alumina ceramic-lined pipe is a composite industrial pipe. By combining an alumina ceramic layer with a metal base, it combines the high wear resistance of ceramic with the impact resistance of metal. The following is an analysis of its core characteristics and applications:

1. Structure and Material Properties

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Utilizing alumina corundum ceramic with a purity of ≥95%, it achieves a Mohs hardness of 9 and boasts wear resistance over 20 times that of ordinary steel pipe.

2. Using self-propagating high-temperature centrifugal casting technology, the ceramic layer forms a dense bond with the inner wall of the steel pipe, with a surface roughness of ≤0.8μm.

Metal Matrix Layer

The outer layer is typically made of Q235-B or 20# seamless steel pipe, with a flexural strength of ≥410MPa, providing impact and pressure resistance.

Transition Layer Design

The nickel-based alloy transition layer balances the difference in thermal expansion coefficients between the ceramic and steel, withstanding extreme temperatures from -50°C to 900°C, and a bonding strength of ≥50MPa.

II. Performance Advantages

Wear Resistance: In quartz sand-containing slurries, the wear rate is only 1/20th that of steel pipe, extending service life by 5-10 times.

Corrosion Resistance: Withstands acid and alkaline media with a pH of 2-12, with a weight loss of<0.01g/year (in a 30% sulfuric acid environment).

High-Temperature Stability: Withstands 10% of the wear rate of steel pipes. 600°C high temperature, rapid cooling and heating temperature differences ≥ 800°C without cracking

Lightweight: Density is only half that of steel, reducing installation costs by 30%

III. Typical Application Scenarios

Mining: Annual maintenance costs for tailings conveying systems are reduced by 68%, with wear<0.5mm/36 months

Power: High-temperature ash pipes (800°C) have operated for 5 years without deformation

Chemical: 5-year leakage-free operation when transporting 98% concentrated sulfuric acid

IV. Purchasing Recommendations

Purity Selection: 99% alumina is recommended for high-wear applications, while 95% alumina can be used for general conditions.

Process Validation: Products using self-propagating centrifugal casting technology are preferred to ensure a porosity-free ceramic layer.

Cost-Effectiveness: Compared to stainless steel pipes, initial costs are higher, but lifecycle costs are reduced by over 60%.