--chrome alloy grinding balls with diameter 10mm to 120mm--chrome alloy cylpebs with size    10*10    12*12    14*14    16*16    18*18    20*20    20*25    25*30.....--material rangeC:1.8-3.6Si:0.3-2.2Mn:0.4-2.5Cr:1.0-16P:0.10maxS:0.06max--hardness range   45-60HRC 
                        2.Meantime we are so good at making Crusher wear parts like Jawplate,Concave,Mantle,and other spare parts like Flywheel,Torch Ring,Lock Nut for Symons,El-Jay,etc.And the manganese steel parts production can be 220mt per month and single part weight can be 2.2mt for Jaws,2mt for cones.