The US Commerce Department said on Wednesday it had found that China and India unfairly subsidised and dumped large diameter welded steel pipe in the United States.
The department found the two countries had sold the pipe at less than fair value at rates ranging from 50.55 to 132.63 percent. It also found the two countries had subsidised the products at rates of 198.49 to 541.15 percent.
In August, the US Commerce Department said in a preliminary determination that large-diameter welded pipe from six countries, including China and India, was being dumped in the United States.
Two months earlier, the department imposed preliminary duties that, for India, ranged up to more than 500 percent.
The US probe, which covers welded carbon and alloy steel pipes with a diameter larger than 16 inches, began after a petition from a group of privately held US producers.
In 2017, large-diameter welded pipe imported from China and India were valued at an estimated $29.2 million and $294.7 million, respectively, the Commerce Department said.