A host of U.S. manufacturers can’t continue their legal bid to raise U.S. duty levels on large diameter welded pipe from Canada after they missed a key deadline, the U.S. Court of International Trade ruled Oct. 16.

Large diameter welded pipe is used to transport oil, gas, slurry, steam, or other fluids. The U.S. imported an estimated $179.9 million worth of the pipe from Canada in 2017, according to the Commerce Department.

Commerce in February determined that this pipe was being sold in the U.S. at less than fair value, and the U.S. International Trade Commission in May determined that...

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