The first 100 wagons are expected to be delivered this year.
The wagons have a load capacity of 75 tonnes and a body volume of 92m3 and are equipped with 1520mm-gauge bogies with a 25-tonne axle load. The wagons have a 32-year lifespan.
UWC successfully outbid six other companies to win the contract. The wagons will be produced at its Tikhvin Freight Car Building Plant in Russia.
The purchase is in response to rising levels of rail freight in Mongolia, which increased by around 7.3% to 27.5 million tonnes in the first 11 months of 2020, compared with the same period in 2019. The growth was primarily driven by exports to China, with further investments in iron-ore and coal mining in the country expected to create additional increases in demand.