Dimensions | Wall thickness | Density | Packing No. | Surface area | voidage | |
Type | mm | mm | Kg/m3 | n/m3 | m2/m3 | % |
15# | 15 | 0.3 | 285 | 347500 | 291 | 95.6 |
25# | 25 | 0.3 | 225 | 135000 | 226 | 96.6 |
40# | 38 | 0.3 | 180 | 50000 | 151 | 97.7 |
50# | 50 | 0.4 | 160 | 15000 | 105 | 98.0 |
60# | 60 | 0.4 | 135 | 9000 | 90 | 98.3 |
70# | 70 | 0.6 | 140 | 4600 | 60 | 98.5 |