Jinan Xinfa Casting&Forging Co., Ltd as one of the bigger manufacturer and exporter of grinding balls in China, the capacity is 50,000 MT annual and exporting to Australia, Korea, Japan, Canada, South Africa etc more than twenty countries and areas, we had obtained the certificate of ISO9001-2000, ISO14001.We mainly produce the following kinds of grinding balls: 1.Forged steel grinding ballsSize: 20mm-150mmHardness: HRC50-65Chemical elements: C: 0.52-0.65; Si: 0.15-0.37; Mn: 0.6-1.2; S & P: 0.04Max; Cr: 0.25Max.2.Forged steel grinding balls (RCAB-1)Size: 20mm-150mmHardness:HRC58-65Chemical elements:C:0.7-0.9,Si:0.65-1.00,Mn:0.70-1.25, P/S:0.04Max,V:0.05-0.123.High chrome casting ballsSize: 20mm-120mmHardness:HRC58-65; Chrome content:11-14%4.Low chrome casting ballsSize: 20mm-120mmHardness:HRC45-55; Chrome content:1-3.5%Packing: 1. Container Bags 2. Steel DrumsIf you interesting in our products ,plz send me an enquiry anyway.Business email: xxxxx]Best regards! Paul Lee Sales Manager