Zhangqiu Ruinian Casting and Forging Co., Ltd. is a professional company producing grinding media, including forged steel ball, grinding steel ball and casting iron ball in China. Grinding steel balls are mainly applied in mines, power stations, cement plants and chemical fields. The steel balls made by us are of high hardness, even wearing, good wearing resistance and no breakage. Our products can really reduce the cost for customers. The sizes are available from DIA20 to 150MM. our annual production capacity is 20,000 tons. Our products are strictly manufactured as per the standard of YB/T091-2005 and are exported to Japan, Korea, Australia and other countries and regions, obtaining a high reputation. Please visit our web to know more about us.We become paying members in Alibaba.http://ruiniangrindingball.en.alibaba.com