USITC Votes for ADDuty on Seamless Copper Pipe Import from Vietnam The United States International Trade Commission has determined that a US industry is materially injured by reason of imports of 28 Jul, 2021, 4:30 am The United States International Trade Commission has determined that a US industry is materially injured by reason of imports of seamless refined copper pipe and tube from Vietnam that the US Department of Commerce has determined are sold in the United States at less than fair value. As a result of the Commission’s affirmative determination, Commerce will issue an antidumping duty order on imports of these products from Vietnam.