1.Material:AL2O3 85%-99.5% 2.pipe thichness= 0.5- ... ,Outside diameter=3-140mm ,lenght=100-2500mm 3.Max temperature 1800 1.Material:AL2O3 85%-99.5%2.pipe thichness= 0.5 ... -10mm ,Outside diameter=3-140mm ,lenght=100-2500mm3.Maximum temperature 1800 degree ,working temperature 1650 degree4.Feature :Great mechanical strength ,good ...