... for material Round ratio above 85% ISO, CE Grinding Glass Beads III. HardnessHV, Loading 100g, residence time: 12sthe ... shot peening:5min(5)the diameter of the glass beads: 250 microns(6)Gross Weight of the tested ... glass beads: 1020g(7) the weight of the ... filling-type bead could be used to improve glass fibre reinforced plastic, rubber, and so on. Grinding ...