Overview This page contains the latest trade data of Balls, iron or steel, cast, for grinding mills.In 2022, Balls, iron or steel, cast, for grinding mills were the world's 2376th most traded product, with a total trade of $858M. Between 2021 and 2022 the exports of Balls, iron or steel, cast, for grinding mills grew by 12.5%, from $763M to $858M.