... chemical, petrochemical, alkali chloride, coal gas and environmental protection industries. Plastic Random Packing include Pall ring, Intalox saddles, Super intalox, Cascade ... Cage ball and Covering ball,HQR ring,Characteristic Indexes of Plastic Heilex Ring NameNormalmmDiameter×Height×ThicknessmmSurface aream2/m3Void space%Bulk densitykg ... ≥6.0≥6.5≥7.0≥6.0≥8.0≥10.0 Plastic Heilex Ring Random Packing