Hongui Line

Tumangang Station is the primary transit point for trade with Russia. The main imports from Russia are timber and crude oil; the main exports are magnesite, steel, fertiliser, non-ferrous metals and non-ferrous metal concentrates,[2] but since the collapse of the Soviet Union freight traffic has dropped significantly.

However, with the renovation and conversion to dual Russian and standard gauge of the 32 km line between Tumangang and Rajin, which includes the entirety of this line, together with the redevelopment of Rajin's port facilities to serve as a gateway to the Trans-Eurasian railway linking Korea to Europe by land, freight traffic is expected to increase significantly in the future. The completion of these renovations has raised the capacity of the line to 12 trains each way per day, with a nominal capacity of 4 million tonnes a year.[6]

The international express train 7/8 that operates between P'yŏngyang and Moscow runs on this line between Hongŭi and Tumangang before crossing the border into Russia.[1] There is also a long-distance service between Tumangang and Tanch'ŏn Ch'ŏngnyŏn station on the P'yŏngra Line.[2]

Further, the Russian Railways operate trains 651/652 between Ussuriysk and Tumangang.[7]