As a modernized and improved version of the type 8620 for Japan National Railways (JNR), 154 type C50s were manufactured at Kisha-Seizo, Kawasaki, Hitachi, Mitsubishi, Nippon-Sharyo, and 4 were manufactured for Sakhalin Agency Railroad at Kisha-Seizo and Kawasaki in 1930.
In 1941, 4 of them were offered and sent to the occupied Chinese island of Hainan for use by the Japanese military.
However, these 4 did not reach Hainan Island and were used on the Railway of the Governor-General of Taiwan during the Japanese colonial period. After The Pacific War renamed Taiwan Railway Administration (TRA) CT230 calss.
The locomotive body was almost the same size as that of the type 8620, but the various new mechanisms adopted at the time resulted in a heavier body, which in turn limited the number of line sections on which it could be used.
It was initially used as an express train for metropolitan suburbs, but finally was used for switching trains until 1972.
Currently 6 of them are preserved statically (refers to locomotives that are preserved in a way that does not allow them to be immediately operated, and/or that are simply on display).
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