Sentetsu Purero-class locomotives

The Purero-class (プレロ) locomotives were a group of steam tank locomotives with 2-6-2 wheel arrangement of used by the Chosen Government Railway (Sentetsu) in Korea. The "Pure" name came from the American naming system for steam locomotives, under which locomotives with 2-6-2 wheel arrangement were called "Prairie".

In all, Sentetsu owned 227 locomotives of all Pure classes, whilst privately owned railways owned another 52; of these 279 locomotives, 169 went to the Korean National Railroad in South Korea and 110 to the Korean State Railway in North Korea.

Description
Orenstein & Koppel of Germany built two superheated 2-6-2 tank locomotives in 1911 which were operated by the privately owned Domun Railway after 1920. Both were taken over by Sentetsu after the nationalisation of the Domun Railway in 1929; after the general renumbering of 1938 they were designated プレロ (Purero) class and numbered プレロ1 and プレロ2.

Postwar: Korean State Railway 부러유 (Purŏyu) class
After the Liberation and partition of Korea, both ended up in North Korea after Liberation, and were operated by the Korean State Railway designated 부러유 (Purŏyu) class.