On November 17th, 2015, the Commissioner of the Australian Anti-Dumping Commission initiated an anti-dumping investigation on imports of grinding balls from China (Anti-dumping Notice No. 2015/132, 17.11.2015). The products subject to investigation are classified under the following HS codes: 7325.9100 and 7326.1100. The complaint was lodged on October 5th, 2015 by Commonwealth Steel Company Pty Ltd. and Donhad Pty Ltd.
 
On 22 April 2016, the Commissioner of the Australian Anti-Dumping Commission imposed provisional anti-dumping duties on imports of grinding balls from China (Anti-dumping Notice No. 2016/45). The rate of the duty imposed on imports from China ranges between 12.6% and 113% depending on the exporting company.
On 6 May 2016, the Commissioner of the Australian Anti-Dumping Commission included the HS codes subheading: 7326.90.90 to the investigation and subsequent duty, whilst the goods description remains unaltered.
 
On 9 September 2016, the Australian authorities imposed a definitive anti-dumping duty on above products from China (Anti-dumping Notice No. 90/2016). The rate of duty is between 3% and 95.4% depending on the company.

On 12 November 2020, the Australian authorities amended the definitive duty imposed on imports on imports of grinding balls from China following the conclusion of a review. The rate of duty applied is the combined countervailing (see related intervention) and dumping duty. The applied combined duty is between 1.1% and 34% depending on the company. Not all companies are subject to duties. 

On 14 December 2020, the Australian authorities initiated a sunset review of the definitive duty imposed on imports on imports of grinding balls from China. The investigation follows the application lodged on 19 November 2020 by Commonwealth Steel Company Pty Ltd trading as Molycop (Molycop).