NEW YORK — The Commerce Department’s International Trade Administration (ITA) has amended some anti-dumping duty margins for imports of circular-welded carbon-quality steel pipe from Vietnam after producer/exporter SeAH Steel Vina Corp. alleged that the agency made ministerial errors.

The amended dumping margins are 3.92 percent for SeAH (down from 3.96 percent previously) and 4.55 percent for Hoa Phat Steel Pipe Co., Huu Lien Asia Corp. and Sunsteel Joint Stock Co. (down from 4.57 percent). The Vietnam-wide rate remains unchanged at 27.96 percent.