| YJ 跃进 | |
| Powertype: | Steam |
| Builder: | Jinan Railway Vehicles Equipment Co. Tangshan Railway Vehicle |
| Serialnumber: | YJ 101-180 (Tangshan Railway Vehicle) YJ 201-320 (Jinan Railway Vehicles Equipment Co.) |
| Builddate: | 1958-1961 |
| Driverdiameter: | 13702NaN2 |
| Length: | 18.31NaN1 |
| Tendercap: | 7t (coal), 19m2 (water) |
| Cylindercount: | 2 |
| Maxspeed: | 60km/h |
| Operator: | China Railway |
The China Railways YJ (Chinese: 跃进; pinyin: Yuè Jìn; lit. 'leap forward') design is based on China Railways PL2 class 2-6-2, itself derived from the JF6 2-8-2, the predecessor of the well known SY class mikado. According to Chinese sources a total of 202 locos were produced between 1958 and 1961.[1]
At least two YJs are preserved. YJ 232 is at Baotou Steelworks, YJ 269 is at Diaobingshan, Tiefa, Liaoning.[2]