For AGB glass beads complying with SAE AMS 2431‑6 standard:
- AGB‑200, AGB‑170, AGB‑35, AGB‑30, AGB‑25: Minimum spherical percentage (roundness) ≥ 80%
- AGB‑140, AGB‑100, AGB‑70, AGB‑50: Minimum spherical percentage ≥ 65%‑70%
- AGB‑18: ≥ 85%
- AGB‑15, AGB‑12: ≥ 90%
Sharp‑edged particle content ≤ 0.5%
