Flanges are the parts connected between shafts and are used for connecting pipe end.Flange connection or flange joint, refers to the flange, gasket and bolt three mutual connection as a group of assembled sealing structure of the removable connection.Precision Machining Alumina ceramic tube with flange has excellent performance such as wear resistance, super strength, ultra-hard, high temperature resistance (refractory), super corrosion resistance, never rust, antioxidant, insulation, environmental protection and so on.