... PE, PVC, CPVC,etc.) 1.high free volume 2.low pressure drop 3.low mass-transfer unit height Plastic Cascade RingIntroduction: Plastic Cascade ... including polyethylene (PE), polypropylene (PP), reinforced polypropylene (RPP), polyvinyl chloride (PVC), chloridized polyvinyl chloride (CPVC) and polyvinylidene fluoride (PVDF).It has ... .8114.292.7143.176*37*3342068.49092.9112.3 PVC plastic cascade ring