The material of the Stainless steel ball is 440C 、 430 、 420 、 410 、 302 、 304 、 316 、 316L, it has different grades of G40,G60,G100,G200,G500. According to CHINA GB308-2002 and USA AFMBA1989,it´s applied in all kinds of exactitude machine, stainless bearing, valve ball, ,chemical and medical related application and etc.
