... size:3mm,6mm,13mm,19mm,25mm,38mm,50mm.etc Inert Alumina Ceramic Balls are widely used in many fields, including petroleum, ... the manufacturing process. The main role of these ceramic balls is to increase the distribution spots of gas ... 92%Fe2O3<1%Physical & Chemical Features of inert aluminum oxide ceramic balls FeldsparFeldspar-RhinestoneRhinestoneRhinestone corundumCorundum20-2525-4545-7070-90> ...