... 0.75"--6") Application:mine ,cement plant, Grinding Steel Ball 1. High hardness 2. Good wear resistance 3. ... 4. No mal-roundness We are a professional steel ball manufacturerSince the establishment of Yuncheng Dongsheng Industrial&Trading Co ... s carbonated steel, chromium steel, stainless steel irregular balls, ball terainers, hardware and bicycling manufacturing, bearing, pharmaceuticals, gauges and ...