... Use as tower packing Metal pall ring:Carbon Steel pall ring, CS pall ring, Carbon Steel pall ring, Stainless steel pall ring, SS304 ... of materials, such as Stainless steel, carbon steel, aluminum, bronze and other alloy.Technical data of Metal pall ring: Diameter (mm) ... .0350.955531200371 16, 25, 38, 50, 76, 100mm Metal pall ring (Material: Carbon Steel, Stainless steel 304, 304L, 316, 316L, 410)