Corporate History

1963 Began a rail welding business as NKK Corporation
1964 Tokaido Shinkansen rail welding project completed
1971 Sanyo Shinkansen rail welding project between Shin-Osaka and Okayama completed
1974 Sanyo Shinkansen rail welding project between Okayama and Hakata completed
1975 Railgrinder developed
1977 Developed narrow gap enclosed arc welding of rails
1984 Tohoku Shinkansen rail welding project between Omiya and Morioka completed
Joetsu Shinkansen rail welding project between Omiya and Niigata completed
1986 Tohoku Shinkansen rail welding project between Ueno and Omiya completed
Seikan Tunnel rail welding project completed
1987 Developed improved enclosed arc welding of rails
1990 Began supplying fixed flash-butt welders
1991 Yamagata Shinkansen rail welding project between Fukushima and Yamagata completed
1992 NK-Type Portable Flash-Butt Welder built
Developed enclosed arc welding method for HH rails
1993 Developed a semi-automatic enclosed arc welding method for standard rails
1995 Began implementing rail tensor with gas pressure welding
1996 Akita Shinkansen rail welding project completed
Nagano Shinkansen rail welding project completed
1998 Yamagata Shinkansen rail welding project between Yamagata and Shinjo completed
Began implementing alumino-thermic welding
2000 Developed semi-automatic enclosed arc welding method for HH rails
2001 Tohoku Shinkansen rail welding project between Morioka and Hachinohe completed
2002 Rail welding business transferred from NKK Corporation to Nippon Kokan Koji K.K.
2003 Kyushu Shinkansen rail welding project between Shin-Yatsushiro and Kagoshima-Chuo completed
Name changed to “JFE Koken Corporation”
2009 Tohoku Shinkansen rail welding project between Hachinohe and Shin-Aomori completed
JGP-N1-Type Pressure Welder developed
Merged with JFE Engineering Corporation
2010 Kyushu Shinkansen rail welding project between Hakata and Shin-Yatsushiro completed
2012 Rail welding business split between “JFE Rail Link Co., Ltd.”
2013 Flash-butt welding control system delivered to West Japan Railway Co., Mukomachi Rail Center
2014 Flash-butt welding machine delivered to East Japan Railway Co., Tokyo Rail Flash-butt welding machine delivered to East Japan Railway Co., Tokyo Rail Center
Rail welding project of Hokuriku Shinkansen Joetsu Section between Itoigawa and Kurobe and between Tsubata and Hakusan completed.
Rail welding project of Hokkaido Shinkansen Aomori Section completed.
2015 Rail welding project of Sendai Subway Tozai Line, Aobayama-Arai-Chuo Section completed.
2016 Flash-butt welding machine power supply system delivered to West Japan Railway Co., Mukomachi Rail Center