Characteristics of Goldpro's grinding media steel balls as follows: 1) Materials, alloy steel 2) High hardness, 55HRC~65HRC 3) Good wear resistance, no deformation 4) Low breakage rate, less than 0.5% 5) Keeping round, little out-of-round rate 6) Low unit consumption, 40% reduction compared to unprocessed round steel 7) Certificates, ISO 9001, SGS, TUV 8) Good surface quality, no flaw 9) Good impact resistance，> 12J/ cm2 10) Strong toughness, anti-deformation 11) Low breakage rate, more than 15000 times/3.5m 12) Environmental, no pollution 13) Dense microstructure , Bainite +Pearlite+Carbide
