Items Brand Surface hardness (HRC) Endurance impact test(Times) Quenched Unquenched Extra high chrome casting alloyed ball ZQCr20 =63 =45 =8000 High chrome casting alloyed ball ZQCr15 =63 =45 =8000 High chrome casting alloyed ball ZQCr13 =63 =49 =8000 Middle chrome casting alloyed ball ZQCr7 — =48 =8000 Low chrome casting alloyed ball ZQCr2 — =45 =8000 Bainite ductile casting alloyed ball ZQSi3 =50 — =8000 Applied fields of our grinding balls: a) Mines; b) Cement plants; c) Power stations; d) Chemical industry
