... Plastic pall ring for filtering waste gas: 1.material:PE,PP,RPP,PVC,CPVC,PVDF 2.diameter:16mm,25mm,38mm,50mm,76mm Plastic tower ... alkali-Chloride industry, coal gas industry and environmental protection, etc. Physical & chemical properties of plastic tower packing Performance / MaterialPEPPRPPPVCCPVCPVDFDensity ... 510076*76*2.6739219305876*76*2.673 plastic pall ring packing used in the packing towers in ...