Standard of China | Standard of international | Mesh | Polishing effect | Standard of China | Standard of international | Mesh | Polishing effect |
w0.25 | 0-0.25 | 60000 | Super mirror polishing | w10 | 5-10 | 2000 | Normal polishing |
w0.5 | 0-0.5 | 30000 | Mirror polishing | w10+ | 6-12 | 1800 | |
w1 | 0-1 | 15000 | Mirror polishing | w12 | 8-12 | 1600 | |
w1.5- | 0-2 | 13000 | w14 | 7-14 | 1500 | ||
w1.5 | 1-2 | 12000 | Fine polishing | w14 | 8-16 | 1300 | |
w2.5 | 1-3 | 10000 | w20- | 10-20 | 1200 | ||
w3 | 2-3 | 7000 | w20 | 12-22 | 1000 | ||
w3.5 | 2-4- | 6500 | w20+ | 15-25 | 800 | ||
w3.5 | 2-4 | 6000 | w28 | 20-30 | 700 | ||
w4 | 2-5 | 5000 | w28+ | 22-36 | 600 | ||
w5 | 3-6 | 4000 | w40- | 20-40 | 500 | Rough grinding | |
w6 | 4-6 | 3500 | w40 | 30-40 | 450 | ||
w7 | 4-8 | 3000 | Normal polishing | w40+ | 35-45 | 400 | |
w10- | 4-9 | 2500 | w50 | 36-54 |