High quality Forged Steel Grinding Ball/Grinding Media for Mine DESCRIPTION 1. Grade: 45#,50Mn,60Mn,65Mn,B2,B3,BL,BG 2. Diameter: 15mm-150mm 3. ... 40 YEARS OF PRODUCTION EXPERIENCE IN GRINDING MEDIA Casting Balls Chemical Components Material C Mn Si Cr S P Superhigh chrome ... Grinding balls are the media for grinding …