Precision Bearing Steel Ball1)Material:GCr15 ( AISI52100)2)Size:1/8",1/4",3/16",5/16",5/32",3/8"and so on3)Grade:G10,G16,G20,G100,G200,G500,G10004)Hardness:HRC58-665)Producing standard:GB308-20026)P ... ...
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