Saddles between the filler shape on the ring, and thus both the advantages of the two, this structure is conducive to increased gas and liquid distribution channel. Bi Baoer loop resistance, flux, mass transfer efficiency. Better filling intensity and rigidity, is the most widely used as a bulk filler. 
 Features: low pressure drop, volume, mass, high efficiency, easy operation. 
 Application: distillation, gas absorption and desorption regeneration system. 
 Model 
 Size 
 Number of accumulation 
 Surface area 
 Porosity dry packing factor 
 Dg25 25 × 20 × 0.5 108500 185 0.96 209.1 
 Dg38 38 × 24 × 0.5 31500 140.4 0.968 126.6 
 Dg50 50 × 28 × 0.8 11160 90.1 0.97 84.7 
 Dg76 76 × 48 × 1 3320 57.6 0.97 63.1