China Hot Sale Carbide Polished Tungsten Sphere 

• Good wear resistance:hardness is HRA89-HRA91
• Grade:6%cobalt,8%cobalt,8%nickel
• Precision:G10-G100
• Types:Blank ball,rough grinding ball,polished ball
• OD sizes:0.3mm-100mm
• Application: Valves, Pumps, Ball Screws, Measurement Standards, Gauging, Wear Parts