Number |
ring wall thickness (mm) |
outer-diameter and height (mm) |
unit volume (Piece/m²) |
pile weight (kg/m²) |
ratio surtace area (m²/m³) |
gap ratio (m³/m³) |
1 | 3X3 | 47*19 | 32500 | 119 | 185 | 0.88 |
2 | 3X4 | 73*27.5 | 8000 | 102 | 127 | 0.89 |
3 | 3X6 | 95*37 | 3900 | 95 | 102 | 0.90 |