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Glass beads on common surface |
glass beads on high roundness surface |
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Appearance |
colorless, transparent, without obvious bubbles and impurities |
colorless, transparent, without obvious bubbles and impurities |
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Size range |
20-140 mesh (109-830 μm) |
10-40 mesh (380-1700 μm) |
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Roundness |
≥ 80% |
≥ 90% |
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Reflectivity |
≥ 1.5 |
≥ 1.5 |
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Density |
2.4-2.6g/cm3 |
2.4-2.6g/cm3 |
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Main ingredients |
SiO2 > 70% |
SiO2 > 70% |
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