Ottawa, March 13 -- Canada has taken official steps by requesting consultations with the World Trade Organization (WTO) to dispute U.S. import duties on steel and aluminum products from Canada, according to a statement issued by the trade organization on Thursday.

The request was circulated to WTO members on Thursday, said the statement.

Canada argued that U.S. measures, which ceased its exemption and increased duties, contravene U.S. obligations under GATT 1994.

Mary Ng, minister of export promotion, international trade and economic development, said Wednesday that Canada was seeking formal consultations with the U.S. regarding tariffs on steel and aluminum.

"Canada is deeply disappointed that the U.S. has chosen to reimpose these ...