... features such as thin wall, heat resistant, high free volume, high capacity, low resistance, high separation efficiency and so on. It is especially ... , so it is widely used in packing towers in petrochemical industry, chemical fertilizer industry and environmental protection, etc. Geometric ParametersSizes(mm)Bulk density ... 304, 304L, 410,316, 316L. YIQUAN metal pall ring for petrochemical industry