CT270 class.The largest class of passenger steam engines used in Taiwan, with features precisely opposite those of the DT650: large drive wheels with poor traction but high speed.
特徵：屬 CT270 型。此型則是台灣使用過最大型的客運用蒸汽火車頭，特徵與 DT650 型剛好相反，動輪特別大，跑得快，牽引力較小。