Established In 1906
Graviton began as a humble operation in 1996 when workers in collared shirts and coveralls wielded hand tools and guided horse-drawn machinery on the first dusty construction sites. We could have never imagined that small-town builder growing into what it has become today — one of the largest and most respected construction companies.
Let’s See Our Process
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The Beginning
Kusano Steel Recreation Company LTD. established in Maruyama-cho, Chikusa-ku, Nagoya
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Incorporated
Production for arc welding tips and nozzles begun for supply to Toyota Motor Corporation Maecenas nisi ex, sodales suscipit dapibus.
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First Major Project
Manufacturing electrode parts and insulating guide pins for resistance welding begun
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Family Business
Production lines transferred to the Ueda Plant, which is renamed KYOKUTOH CO., LTD
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First U.S. Civil Prpject
Kanto Sales Office opened in Omiya, Saitama Prefecture Auto tip changer introduced and mass production began
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