RCAB-3 Forged steel grinding balls 1)high hardness 2)good wear resistance 3)low breakage 4)even wearing RCAB-3 Forged steel grinding ballsa) The material is high quality alloy steel material.b) The export quantity is 50,000-80,000 tons yearly.c)The certificate is TUV,ISO9001,SGS report. 1.Chemical composition and hardness 2.Specifications