On July 13, 2018, the US International Trade Commission (USITC) voted to make an affirmative final ruling on the anti-dumping industry damage imported from China's stainless steel flange (StainlessSteelFlanges): the products imported from China constitute a substantial part of the US domestic industry. damage. In the ruling, all five members voted for a positive vote. Based on the above-mentioned affirmative ruling on industrial damage, the US Department of Commerce will issue anti-dumping taxation orders on stainless steel flanges imported from China. The case involved products under the United States tariff tariff number 7307.21.1000 and 7307.21.5000.

On September 6, 2017, the US Department of Commerce announced the import of stainless steel imported from China and India at the application of the Coalition of American Flange Producers and its member companies CorePipeProducts, Inc. and MaassFlange Corporation on August 16, 2017. Flange initiated anti-dumping and countervailing investigations. On September 29, 2017, the US International Trade Commission issued a notice stating that the anti-dumping and countervailing industries imported from China and India were subject to a positive preliminary ruling. On March 20, 2018, the US Department of Commerce announced an anti-dumping preliminary ruling on stainless steel flanges imported from China and India. On June 5, 2018, the US Department of Commerce announced an anti-dumping final ruling on stainless steel flanges imported from China.