metallic Inner Arc Ring lowresistance,low pressure drop great separating,effect cold ... . Include: pall ring, Rectangle saddle ring, Ladder ring, Conjugate ring, Inner curved arc jointed plate ring, Improved pall ring, improved arc ... ring, Rasching ring metallic Inner curved arc jointed plate ringMaterials:stainless steels,carbon steels,aluminium,copper,bronze,304L,316L and aluminium ...