... RPP,PVC,CPVC,PVDF ...According to your demand!DH:100mm,76mm,50mm,38mm,25mm,16mmFeatures of pall ring:1.low fluid resistance ... Steel,Carbon Steel,Aluminum,Copper,Monel,Hastelloy,Ni,Ti...According to your demand! 50 50*50*0.8(1.0) ... 70 60 0.95Material:PP,Super PP,PVC,CPVC...According to your demand! 76 76*76*2.6 1830 73 72 ... 16*16*o.8 177600 91 274 0.900 A Variety Of Materials Pall Ring For Random Packing