... ring,metal Inner Arc ring,metallic Inner Arc ring,carbon steel Inner Arc ring,ss304 Inner Arc ring,316L Inner Arc ring Metal Improved Inner Arc Ring ... and heat resistonce,long lifetime.Features:the Pall Ring packing have characteristics of low pressure drop,high ... .Materials:stainless steels,carbon steels,aluminium,copper,bronze,304L,316L and aluminium permeated steels,improved polypropylene,improved ...