40Cr Grinding Steel Rods Mineral Processing 40mm to 120mm in diameter The length can be customerized. Hardness: HRC45-55 high hardness,long life. Features: Steady hardness, straightness, and good wear resistance. We welcome customers both at home and abroad to come to negotiate business with us, we sincerely promise you. We are trying our best to supply you with high quality products, reasonable price, timely delivery with satisfactory service as the basis of our long-term cooperation. If you have any requirements or any interest with our grinding balls and rods, please feel free to contact us.