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.

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Let’s See Our Process

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1953

The Beginning

Kusano Steel Recreation Company LTD. established in Maruyama-cho, Chikusa-ku, Nagoya

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1968

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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1982

First Major Project

Manufacturing electrode parts and insulating guide pins for resistance welding begun

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1983

Family Business

Production lines transferred to the Ueda Plant, which is renamed KYOKUTOH CO., LTD

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1985

Employee Ownership

Auto tip dresser introduced and mass production began

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1990

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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1991

Choosing To Included

Auto tip dresser introduced and mass production began

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