Grinding rod Type a: Diameter: 60mm - 90mm Length: 3 meter-6 meter Hardness: 45-55 Chemical elements: (%) C:0.52~0.65 mn: 0.6-1.20; si: 0.17-0.37; p: 0.035 max, s:0.035 max; cr: 0.04 max Type b: Diameter: 60mm - 90mm Length: 3 meter-6 meter Hardness: 45-55 Chemical elements (%): C: 0.72-0.82; mn: 0.7-0.8; si: 0.17-0.37; p: 0.035 max, s:0.035 max; cr: 0.28-0.60 We shandong huamin steel ball joint-stock co. Ltd. Is one of the biggest manufacturers and exporters of kinds of steel grinding balls and grinding rod in china, with the capacity 50, 000 tons annual. We mainly export to america, australia and asia more than ten countries and areas. We have obtained the iso9001:2000 quality system and iso 14001:2004 ems. The quality can meet different requirements from different countries. If you interesting in our products, plz send me an enquiry anyway. Steel drums or flexible container bags