In 1932 the line between Shijonawate and Katamachi was electrified first in the sections of the JNR in the Kansai area (Hanwa Line opened in 1929 was, in those days, a private railroad company called Hanwa Electric Railway), the JNR steam locomotive C11 class ran between Kizu and Shijonawate, and the electric trains ran between Shijonawate and Katamachi.
1932年、四条畷-片町間が関西の国電区間では初めて電化され（1929年に開通した阪和線は当時阪和電気鉄道という私鉄）、木津-四条畷間は国鉄C11形蒸気機関車が牽引する蒸気機関車、四条畷-片町間は電車になった。