... have an annual production capacity of over 5000 tons steel ball, there are all sold to overseas market for their ... quality. Products range (A.)Material carbon steel ball, stainless steel ball, chrome steel ball, grinding steel ball and so on. (B.)Size: from ... SS440, SS304, SS316, SS420 Applied for all kinds of hardwires, bearings, wheels, bicycles and toys, chemical, riding media, polish and military ...