On March 16, 2023, the Australian Anti-dumping Commission issued Announcement No. 2023/010 stating that in response to an application submitted by the Australian domestic enterprise Trustee for the Michael Terrance Sullivan Family Trust (trade name: MT Sullivan & Co Pty Ltd.), it will impose restrictions on imported Precision Pipe and Tube Steel from Mainland China and South Korea launched the fourth anti-dumping exemption investigation, and the fourth anti-subsidy exemption investigation was launched against the products involved in the case from Mainland China.

On February 8, 2022, the Australian Anti-dumping Commission issued Announcement No. 2022/011, launching the third anti-dumping exemption investigation into precision steel pipes imported from mainland China and South Korea, and launching the third anti-subsidy exemption investigation into precision steel pipes from mainland China. On September 12, 2022, the Australian Anti-dumping Commission issued Announcement No. 2022/072, making a positive final ruling on the above-mentioned third anti-dumping exemption investigation and deciding to ban chrome plating with outer diameters of 16 mm and 19 mm from mainland China and South Korea. Anti-dumping duties are not levied on steel pipes, and no countervailing duties are levied on chromium-plated steel pipes with an outer diameter of 16 mm and 19 mm in mainland China. This measure will take effect from December 21, 2021.

On January 5, 2022, the Australian Anti-dumping Commission issued Announcement No. 2022/001, stating that it would launch a second anti-dumping exemption investigation into precision steel pipes imported from mainland China and South Korea, and launch a second anti-subsidy exemption investigation into the products involved in the case from mainland China. . On September 12, 2022, the Australian Anti-dumping Commission issued Announcement No. 2022/071, making a final ruling on the above-mentioned second anti-dumping exemption investigation and deciding to exempt the products involved in the case from mainland China and South Korea as follows: any kind of non-alloy steel Welded pipe, 1. Single-wall resistance welding in compliance with SAE J526 specifications, carbon content not exceeding 0.13%, outer diameter less than or equal to 11.50 mm, wall thickness greater than or equal to 0.5 mm and less than or equal to 1.0 mm; 2. Double-wall in compliance with SAE J527 specifications Copper brazing, the carbon content does not exceed 0.13%, the outer diameter is less than or equal to 13 mm, and the wall thickness is greater than or equal to 0.5 mm and less than or equal to 1.0 mm. This measure will take effect from November 4, 2021.