... .pipe thichness= 0.5-10mm ,Outside diameter=3-140mm ,lenght=100-2500mm 3.Max temperature 1800 1.Material:AL2O3 85%-99 ... .pipe thichness= 0.5-10mm ,Outside diameter=3-140mm ,lenght=100-2500mm3.Maximum temperature 1800 degree ,working temperature 1650 degree4.Feature ... ,good insulation and highfrequency characteristics underhigh temperature Sell high alumina insulator