Metal filler materials include carbon steel and stainless steel. Due to its thin processing wall, high porosity, high flux, low resistance, heat resistance, corrosion resistance, and high separation efficiency, it is particularly suitable for vacuum distillation towers to handle materials that are sensitive to heat, easy to decompose, easy to polymerize, and prone to carbon deposition. Therefore, it is widely used in packed towers in industries such as petrochemicals, fertilizers, and environmental protection.

Metal bulk packing materials mainly include Raschig rings, Ball rings, modified Ball rings, stepped rings, saddle rings, conjugate rings, double arc rings, flat rings, 84 inner arc rings, Interlock rings, hexagonal rings, etc.