We are an OEM supplier specializing in various castings (cast iron) of pulleys & sheaves as per customers' drawings & samples. FEATURES TO ... .10. Part Unit weight range: For grey iron casting: up to 5000kgs; For ductile iron casting:up to 3500kgs; 11.Representative product ... ,bearing stand,housing,casing,cover,valve body,pump body,big ring gear,bolster,frame,rear frame,front frame,engine block.