On June 26, 2020, the United States International Trade Commission (ITC) voted for the second anti-dumping sunset review of the industry damage on thin-walled rectangular steel pipes (Light-Walled Rectangular Pipe and Tube) imported from China, South Korea, Mexico and Turkey. The final ruling, meanwhile, the second anti-subsidy sunset review for the thin-walled rectangular steel pipes imported from China was made. The final ruling on industrial damage is affirmative: the ruling that if the current anti-dumping and countervailing measures are cancelled, the import of the products involved in the Substantial damage caused by domestic industries in the United States may continue or reoccur. According to the final ruling, the current anti-dumping and countervailing measures in this case continue to be effective. In the ruling, all five members of the US International Trade Commission voted affirmatively.

On May 30, 2008, the US Department of Commerce formally imposed anti-dumping duties on thin-walled rectangular steel pipes imported from Turkey. On August 5, 2008, the US Department of Commerce formally imposed countervailing duties on thin-walled rectangular steel pipes imported from China, while levying anti-dumping duties on thin-walled rectangular steel pipes imported from China, South Korea, and Mexico. Following the affirmative final decision of the United States for the first anti-dumping and anti-subsidy sunset review of the products involved in the above-mentioned countries, the United States extended the countervailing duty on products involved in China for the first time on June 23, 2014, and on China, South Korea, and Mexico. And Turkey’s anti-dumping duties on the products involved. On May 1, 2019, the US Department of Commerce issued an announcement to initiate the second anti-dumping sunset review investigation of thin-wall rectangular steel pipes imported from China, South Korea, Mexico and Turkey, and the first The second anti-subsidy sunset review review investigation. On August 27, 2019, the U.S. Department of Commerce issued an announcement saying that the second anti-dumping fast sunset review final decision on thin-walled rectangular steel pipes imported from China, South Korea, Mexico and Turkey will be announced on August 30. Allegedly, the second anti-subsidy fast sunset review final decision was made for thin-walled rectangular steel pipes imported from China.