... 2mm-9.525mmApplication: cement,mine,power station,chemical...Material: Carbon Steel, AISI1010Certification: ISO9001:2008hardness: 58-65HRCPackaging & Delivery ... with good quality and best price.Carbon Steel BallLow carbon steel ball, High carbon steel ballFeatures: 1) Materials: ... standards5) Applied for all kinds of hardwares, bearings, wheels, bicycles and toys, chemical,griding media,polish and ...