Ukraine has launched complaints at the World Trade Organization to challenge anti-dumping duties imposed by Armenia and Kyrgyzstan on certain types of Ukrainian steel pipes, documents published by the WTO showed on Monday.

Ukraine said the two countries, both members of the Russia-dominated Eurasian Economic Union, should have phased out duties that were "higher than necessary, erroneous and based on deficient rulings, procedures and provisions," Reuters said.

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Ukraine has already lodged a similar WTO complaint against a third member of the customs union, Kazakhstan.

Countries accused of breaking the WTO rules have 60 days to settle the matter or Ukraine could ask the WTO to adjudicate.