Lines of business


We are highly trusted and regarded as a steel bridge manufacturer supporting the prosperity of society through infrastructure construction projects such as road bridges, highway bridges and viaducts and by responding to various needs such as the strengthening of logistics, overhauling due to aging and repair work, and securing of safety.

Steel Bridge・Steel Structure

We can consistently deal with design, production, machining, assembly and installation, and we are proud of our extensive experience constructing steel bridges and steel structures all over the country.
We are also developing top level technologies for the steel segments required for the shield method of construction.


As the demand for industrial development and social infrastructure improvements increases, advanced large-scale projects are being promoted that take the environment for the next generation into account.
We are in a position to take advantage of our capabilities in product development and engineering as a manufacturer and are active in various fields.