Material: Carbon Steel, Stainless steel Diameter: 5/8", 1", 1.5", 2", 3", 4" Application:Use as tower packing Size customized Metal pall ring has the features of thin wall, heat resistant, high free volume, high capacity, low resistance, high separation efficiency and so on. It is especially suitable for rectification towers, so it is widely used in packing towers in petrochemical industry, ...