... resistance 4,ISO certifiacte Alumina ceramic tube high temperature Main Features:1, Lining ceramic has high strength, high hardness, wear resistance, non-corrodibility. ... fixed, smooth, and has good heat resistance (-50°C to 400°C).4, The ceramic’s surface is smooth and ... .dsmaterial.com About Factory1.Market: Our product is sold well in Malaysia, Turkey, Mongolia, Vietnam, France, Germany, the Middle ...