... floor. Usually, the open surface is 35% of the whole wall surface, which helps the liquid & gas pass in pacing tower ... Ring.Material: Metal pall ring is made of material like Stainless Steel, Carbon Steel, Aluminum, Copper, Monel, Hastelloy, Ni, Ti, and so onTechnical ... .965501200370Φ100100×100×2.0350.955531200371 Metal pall ring (Carbon Steel, Stainless steel 304, 304L, 316, 316L, 410)