Glass beads for grinding,blasting,polishing and reflecting mark Specifications 1 ... M247,JT,TS 3.manufacturer 1.Intorduction: The glass beads made of the soda-lime silica glass has the ... refraction: 1.5Min Roundess: 80%Min for reflecting mark,90% Min for other application Grit Size:10,12,14, ... 3.Applications: 1: Blasting and cleaning 2: grinding media for the pigment, ink, etc.Normally it is big size, ...