Detailed Product Description Metal Improved Inner Arc RingThe advantages of metallic :low resistance,low pressure drop, ... In addition,improved backing has good distribution for liquids in the packing bed.Materials:stainless steels,carbon steels,aluminium,copper, ... m3Void space%Bulk densitykg/m3No.elementsper/m3Packing factorm-1PallInner curved arc jointed plate ringø3838*38*0.613894.735014500164ø5050* ...