... transfer efficiency; DescriptionMetal pall ring is one of the most common and well known packings,is an industry standard ... pall ring provide for an effective distribution of gas-liquid and resist plugging,fouling and nesting. Compared with the Raschig ring, ... ExtractionMaterialcarbon steel and stainless including the types 410,304,304L,316,316L Ihigher gas and liquid loading of pall ring in SS304