... 5", 2", 3", 4" Application: Use as tower packing Size customized Metal pall ring is an industry ... The opened cylinder wall and inward bent protrusions of the Metal pall ring and lower pressure drop ... nesting. Compared with the Raschig ring, Pall ring of gas fluxes increase more than 50% mass transfer ... bronze, 304L, 316L, and other alloy.Technical data of metal pall ring: Diameter (Inch)Dimension d×h×δ ...