... sewage disposal, and for floating. Solid ball diameter 1mm--60mm, mainly used in the industry of bearing.2) Plastic balls are made ... nameSpecificationMaterialApplicationSolid ball1mm-60mmPP,PE,ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ball10mm-100mmPP, ... PE,HDPERoll on ball,Bearing ball,Ball valve,Floating ball,and so onRoll on ...