Owing to its thin wall, high void and capacity, low fluid resistance, and heat & corrosion resistance, metallic packings, include carbon steel or stainless steel, applied to handle the thermal- sensitive, hard to separation and easy carbonized materials in the vacuum rectifying towers. Metallic random packings include Conjugated rings, VSP ring, Intalox saddles, Twin curved saddles, HQM flat ring, Cascade ring and Pall ring.