... 9001:2008 certificate We can provide any size tungsten carbide ball you need,guarantee to you the grade rang you ... required, also the quantiy.Recommended material is YG6,YG8,YG6X,YG8X,etc.It can used where extreme hardness ... resistance is required; in such applications as bearing, ball screws, values and flow meters.If you have any ... tools for machine manufacture and wearing parts. tungsten carbide ball