Company Information

現場塗装

For the past half a century, we have established a solid track record of more than 900 onsite painting projects for preventing rust on bridges and steel structures primarily as a contractor for public works projects for the Hokkaido Regional Development Bureau and Hokkaido Prefectural Government. Our onsite project management capabilities developed over the past 50 years are also used in various aspects of planning, investigating and designing anti-rust and anti-corrosion solutions.

Onsite Bridge Painting Project
Scaffolding installation
Scaffolding is installed to provide a safe footing for paint work.
Boards are used below the scaffolding for added safety in the case of overpasses.
Completion of scaffolding installation
This photo shows the scaffolding after installation.
The seamless and panel floors prevent any and all debris from falling.
Materials preparation work
Rust and chipped or cracked areas are removed with a grinder. Depending on the project, a blaster may be used to completely eliminate rust or paint by blowing abrasive materials onto the paint at high pressure.
Painting work
Paint work begins after the surface has been prepared.

In the past, we selected the paint most ideally suited to the environment of each individual bridge (phthalic resin coatings for general environments and polyurethane resin coatings for harsh environments).Today, however, based on lifecycle costs (LCC) we use an epoxy resin coating as a base coat topped with a highly weather resistant fluoropolymer coating.
About painting work
Painting a bridge involves more than just applying the paint. The paint amount is predetermined, so work must be carried out by high experienced bridge painting technicians who are carefully trained to use the correct amount of paint during application work.

Generally paint work involves two base coats followed by a middle coat and top coat. In this case, the thickness of the paint ranges from 200μm to around 300μm.
Scaffolding removal
The scaffolding is removed after various inspections are carried out on the top coat.

Scaffolding is removed very carefully so as to avoid damaging the finished bridge.
Completion
The project is officially completed after the scaffolding is taken down and all equipment and temporary facilities are removed and the site is cleaned.