Sphere Engineers Pvt. Ltd supplies Forged Grinding Media Chrome Steel Balls. Sphere Engineers Pvt. Ltd has obtained ISO 9001:2000 certifications. Sphere Engineers Pvt. Ltd supplies wide range of graded precision steel balls, grinding, burnishing steel balls and other polishing media such as satellites, ball cones etc. Using different raw materials under the Brand name "Metro Balls". Forged Grinding Media Chrome Steel Balls Balls is manufactured by cold forging [heading] and hot forging process. Forged Grinding Media Chrome Steel Balls are used in process equipment such as ball mills, conical ball mills, attritor and dispersion mills, for the reduction in particles size by grinding / milling operation. It is available in the size of 1.50 mm to 50 mm.