In July 2015, the United States International Trade Administration initiated a countervailing duty investigation on imports of heavy walled rectangular welded carbon steel pipes and tubes from Turkey. The products subject to investigation are classified under the following HS code subheadings: 7208.40.6060, 7208.53.0000, 7208.90.0000, 7210.70.3000, 7210.90.9000, 7211.19.1500, 7211.19.2000, 7211.19.4500, 7211.19.6000, 7211.19.7590, 7211.90.0000, 7212.40.1000, 7212.40.5000, 7212.50.0000, 7214.10.0000, 7214.30.0010, 7214.30.0080, 7214.91.0015, 7214.91.0060, 7214.91.0090, 7225.11.0000, 7225.19.0000, 7225.40.5110, 7225.40.5130, 7225.40.5160, 7225.40.7000, 7225.99.0010, 7225.99.0090, 7226.11.1000, 7226.11.9060, 7226.19.1000, 7226.19.9000, 7226.91.0500, 7226.91.1530, 7226.91.1560,  7226.91.2530, 7226.91.2560, 7226.91.7000, 7226.91.8000 and 7226.99.0180

On 13 September 2016, the United States International Trade Administration imposed a definitive countervailing duty on imports of heavy walled rectangular welded carbon steel pipes and tubes from Turkey. The rate od duty ranges from 9.87% to 15.07%. 

On 2 August 2021, the United States International Trade Administration announced the initiation of a sunset review of the definitive duty imposed on imports of the subject good from Turkey.