ORIENTAL CASTING AND FORGING (SHANDONG) CO., LTD Our main products as follows Steel ball: 1. Forged steel balls Size: 20mm-150mm Hardness: HRC50-65 Chemical elements: C: 0.52-0.65; Si: 0.15-0.37; Mn: 0.6-1.2; S & P: 0.04Max; Cr: 0.25Max. TEL 0086-531-83371009 FAX 0086-531-83801382 M/PHONE 0086-13964100839 e-mail: jakehsc*sina.com jakehsc*yahoo.com HOU SONG CUN (SALES MANAGER)