Flat ring is height-diameter ratio is 0.2-0.4. Internal transverse staggered muscles increases its mechanical strength.
Size D×H×S(mm) |
Surface area m2/m3 |
Void ratio % |
Pieces per m3 n/m3 |
F Factor m-1 |
Φ28×9×1.0 |
160 |
88 |
170000 |
287 |
Φ38×13×1.2 |
145 |
92 |
46000 |
175 |
Φ50×17×1.5 |
128 |
93 |
21500 |
140 |
Φ76×26×2.5 |
116 |
93 |
6500 |
112 |
Normally delivered within 10 days, for large orders, it depends on the contract.