Grinding steel rods-grinding bar with proper heat treatment Diameter: 80mm-140mm Length: As per customer's request Hardness: HRC45-55 Application: Various rod mills for metal mines The grinding rods are produced by alloy steel materials, which have got the national patent. We have one complete strict quality control systems from the materials, production process and finished products to ensure the steady quality of the grinding rods. Should you have any interest, please feel free to contact us.