... Inner Arc ring,metallic Inner Arc ring,carbon steel Inner Arc ring,ss304 Inner Arc ring,316L ... size.In addition,improved backing has good distribution for liquids in the packing bed.Materials:stainless steels,carbon steels, ... material stainless steel (AISI304) in the material thickness shown. Other material available: carbon steel, stainless steel including 304, 304L, 410,316, 316L. Stainless Steel ...