Detailed Product Description Inner curved arc oblate ring Slenderness ratio is 0.2-0.4, which cancelled the flanging of step ring, adopted incurving arc to improve filling's strength. It has reasonable passage structure, low pressure drop. Handling ability and mass transfer have been improved to some extent.Type Specification, sized×h×δmmHeaping numbern/m3Heaping weight(γp)kg/m3Surface area(α)m2/ ...