... :3,6,10,13,19,25,38,50mm Inert Ceramic Ball of Size 3,6, ... 10,13,19,25,38,50mm XINGFENG Catalyst bed support media 17% are ... Products to these specifications are manufactured from very high quality chemical-porcelain clay materials, which has quite ... excellent stability, high mechanical strength and resistance to thermal shock, ... 1/2''(38mm)>1200>122''(50mm)>5600>56