United States Steel Corp., along with other petitioning parties in ongoing antidumping and countervailing duty investigations relating to seamless standard, line and pressure pipe from China, announced that it was making an allegation of "critical circumstances" in the proceeding. In response to a surge of imports entering the market after the filing of these cases in September 2009, the petitioners are seeking to have remedial duties assessed on certain imports that entered the United States after the filing of petitions, but prior to the time in which duties are normally assessed.

Chinese imports of seamless standard, line and pressure pipe increased by more than 290% in the three months after the filing of petitions, as compared to the three months prior to the filing. The Department of Commerce is currently scheduled to make its preliminary determination on Feb. 16, 2010.