Alumina pebbles, used in ceramic tile, cement, chemical, mineral 95%: size:3-70mm, 20-70 with same price, Alumina pebbles, ... used in ceramic tile, cement, chemical, mineral 95% :Advantages:The products are featured by high hardness, big density ... (scale)Abrasion loss(%)92 series92≥3.62≤0.019.0≤0.0195 series95≥3.66≤0.019.5≤0.01The standard specification of alumina grinding balls ...