According to different materials, Steel Ball can be divided into bearing steel, stainless steel ball, steel ball, copper bearing steel ball, such as the bearing steel ball is the important foundation of industrial components, steel ball bearings used on precision bearing industrial and living fields has a long history and more widely used, and arguably most have turn the place there is the existence of the steel ball, steel ball commonly known as steel ball, the ball. Steel balls are widely used in bearings, hardware, electronics, wrought iron, mechanical equipment, electric power, mining, metallurgy and other fields.