... -up and potential entrainment, the Metal pall ring geometry enables high gas and liquid transfer rates. The opened cylinder walls and ... are available in a wide range of materials, such as Stainless steel, carbon steel, aluminum, bronze and other alloy.Technical data of Metal ... , 25, 38, 50, 76, 100mm Metal pall ring (Material: Carbon Steel, Stainless steel 304, 304L, 316, 316L, 410)