No. | Diameter(um) | Corresponding sieve size |
1 | 850-425 | 20-40 |
2 | 425-250 | 40-60 |
3 | 250-150 | 60-100 |
4 | 150-105 | 100-140 |
5 | 105-75 | 140-200 |
6 | 75-45 | 200-325 |
Type | Mesh | Grain Size μ m |
30# | 20-40 | 850-425 |
40# | 30-40 | 600-425 |
60# | 40-60 | 425-300 |
80# | 60-100 | 300-150 |
100# | 70-140 | 212-106 |
120# | 100-140 | 150-106 |
150# | 100-200 | 150-75 |
180# | 140-200 | 106-75 |
220# | 140-270 | 106-53 |
280# | 200-325 | 75-45 |