Main Properties of The ceramic-lined steel composite pipe

The molten alumina produced from the reaction Fe2O3+2Al=2Fe+Al2O3 spreads on the inside wall of the steel pipe under the influence of a centrifugal force, then solidifies, so the ceramic layer has high density and smooth surface and bonds to the steel pipe.

Wear-resisting comparative table of The ceramic-lined steel composite pipe:
Sand injection test 30% Transfer test of sludge with SiO2
Material Volume diminution
(cm3)
Material Volume diminution
(cm3)
Ceamic lined
Steel pipe
0.0022 Ceamic lined
Steel pipe
3
Ceramic pipe
Al2O397%
0.0025 S45C 25
Main Properties of The ceramic-lined steel composite pipe:
Item Index
Content of Alumina ≥95%
Density ≥3.5 g/cm3
Rockwell Hardness ≥80 HRA
Impact Strength ≥850 Mpa
Bending Strength  ≥290MPa
Breaking Temper ≥4.8MPa·m1/2
Coefficient of Linear Thermal Expansion 20W/m.K