The product description: 1 high chromium casting ball Hardness: hrc 60-66 Microstructure: m+c Chemical composition(%):c:1.9-3.3 , si:0.3-1.0 , mn:0.2-0.8 , cr:10.0-30.0, P:0. 9 max , s:0.9 max 2 medium chromium casting ball Hardness: hrc 48-55 Chemical composition(%): c:2.0-3.3, si:0.3-1.0;mn:0.3-1.0, cr:3.0-6.0, P:0.1 max, s:0.12 max Microstructure: p+c 3 low chromium casting ball Hardness: hrc46-53 Chemical composition(%):c:2.0-3.3, si0.3-1.0, mn:0.3-1.0, cr:1.0-2.5, P:0.1 5 max, s:0.20 max Microstructure: p+c Grinding media ball, grinding steel balls for mines, cement plants Forged steel balls: Diameter:20mm-150mm Hardness: hrc55-65 2.High chrome casting iron balls: Diameter:17mm-120mm Cr content:10-14% Hardness:hrc60-66 Features: high and steady hardness, no breakage, good wear resistance and even good wearing. 3.Grinding steel rods in rod mills: Diameter:10-100mm Length:2.5m-6m Hardness:hrc40-55 Features: steady hardness, straightness, and good wear resistance. We have established and are establishing friendly good cooperation with some famous mines in the world, such as anglo gold, codelco, bhp, erdenet copper corporation etc. So please inform us if you are interested in our products, we can discuss more on our business. Container bags, steel drums£¨1000kg£©