Metal random packing mainly are carbon steel, aluminum alloy and stainless steel. It has many merits such as thin wall, high interstice rate, large flowing area, low resistance and high separation efficiency. It is especially suitable for disposing the temperature sensitive, easy-decomposed and easy-converged meterials in the vacuum-rectification tower. Specifications as below: Model Name Model No Size (mm) Specific Surface Area Void Rate % Bulk Density Bulk Number Pc/ m3 Packing Factor m-1 Pall Ring MPR16 16*16*0.5 311 93 539 17100 455 MPR25 25*25*0.6 233 93.7 489 55900 252 MPR38 38*38*0.8 129 94.5 432 13700 153 MPR50 50*50*1.0 112.3 94.9 395 6500 131 MPR76 76*76*1.5 70 95.2 374 1765 81