Kumagai Gumi

Engineering and Construction, Tunneling


Kumagai Gumi Co., Ltd is a Japanese construction company involved in infrastructure and tunnel construction. (Company website)


Kumagai machines were involved in the completed Koohrang and Cheshmeh Langan tunneling projects. (World Tunneling“Iranian TBMs continue steady march," December 23, 2009)


Kumagai has a history in Iran. Kumagai incorporated an Iranian subsidiary in the 1977, and around that time was contracted to build a water supply tunnel in Isfahan, Iran. (KUMAGAI GUMI COMPANY, LTD. Company History)