High Silica Glass Marble
High silica glass marbles belong to Na2O-B2O3-SiO2 glass. They are
used to make high silica fiber, which can be used for the thermal
insulation of spacecrafts, ablative materials, high
temperature-proof materials and high temperature-resistant
insulation materials etc.
1. The diameter of the glass is 16.0±0.7 mm. Glass marbles
shouldn't be any out of round or misshapen macroscopically. The
largest radius minus the shortest radius is not over 1.0mm.
2. There should not be any big macula, over 5mm chapped surface, or
other impurity such as oil stains, alkali powder, rust etc.
3. Its free of stones, surface contamination or excessive air
Rate of Qualification: >98%