List of Road, bridge and tunnel materials products

Manage jack pressure and remotely check hydraulic and water pressure measurements without manual intervention! Quickly and safely obtain data without entering the installation site!

• Other measuring instruments

We offer a rich selection and reliable technology. With comprehensive guarantees, you can feel secure even after installation! For commercial air conditioners suitable for offices and stores, please c...

• Heating and cooling equipment and facilities

Dimensions 100×100×1000! It is a product with internal joints, making it easy to install.

• Gutters and U-shaped gutters

Precast on-site drainage ditches! Manufactured to match existing covers.

• Gutters and U-shaped gutters

Perfectly fits the cross-section! Custom-made products from our steelworks department.

• Inspection hatches, manhole covers, and ditch covers
• Gutters and U-shaped gutters

No land acquisition is necessary. This rockfall prevention measure can demonstrate its protective function simply by being "placed" along the road.

• Protective fence
• Safety and consumables
• Concrete Retaining Wall

From 2002 to 2021, we have a total construction record of 1,400 km. Leave the independent guardrail foundations to us.

• Concrete wall
• Concrete Retaining Wall
• Protective fence

Produced in sizes tailored to the site, just like standard products with angles!

• Grating

Using a lighter product than the standard grating! The size is 1,000×H2135 and is divided into two parts.

• Grating

We are offering a comprehensive catalog introducing our hybrid joints with a long-term durability of 50 years for free!

• Bridge Materials

Supports various types of bridges, with numerous achievements nationwide! High water resistance, long-term durability of 50 years, and easy installation.

• Bridge Materials

Explaining the key points for selecting joints for bridges! Technical materials are available as a gift!

• Bridge Materials

Rain and water resistant!! Bottom-modified solvent-free asphalt cold mix.

• Paving Materials

From drainage works and underground irrigation systems to water quality filtration materials. Leave the tile chip installation to us.

• Japanese roofing tiles
• Paving Materials
• Pavement construction

Contributing to leak prevention and spalling measures for tunnels and culverts, centered around the EF series that meets NEXCO standards.

• Tunnel Materials

Contributes to leak prevention measures for tunnels and culverts; can be installed without protruding anchors, even in sites with strict sidewalk and construction limits.

• Tunnel Materials

The panel body uses aluminum composite panels to achieve fire resistance. It contributes not only to tunnels but also to leak prevention measures within building structures.

• Tunnel Materials

It is possible to reliably collect and manage water leakage from the walls of tunnels and underground structures in a horizontal direction! Contributes to leakage prevention measures for tunnels, culv...

• Tunnel Materials

Depending on the leakage situation, it is possible to cover the leakage points widely and accurately implement surface drainage treatment, contributing to leakage countermeasures for tunnels, culverts...

• Tunnel Materials

We would like to introduce a case where we produced and installed a photoluminescent sign plate!

• Road signs and road accessories

We would like to introduce a case where foundation blocks were manufactured with the same dimensions as part of the restoration work.

• Road signs and road accessories

Compatible with sites with strict construction limits, such as single-track tunnels. Embedded drainage channel 'RD (Rubber Drain) Series' (B4 method).

• Tunnel Materials

[NEXCO standard compliant] Combines leak prevention and spalling prevention, with no leakage from the main body due to its integrated structure, contributing to leak prevention in tunnels, culverts, e...

• Tunnel Materials

Designed with joints for easy construction! When placed with a ton, it automatically comes together.

• Gutters and U-shaped gutters

After construction, if the road surface height does not match, we will provide proposals tailored to the site.

• Road facilities

There is a slit running through the center with a 1% slope from the outside!

• Paving Materials

Restricted area protective fence! Dimensions are flexible, U-shaped fence will be made from supplied materials.

• Protective fence

Contributing to fall prevention and safety measures! We provide safety and peace of mind no matter how harsh the usage environment is.

• Tunnel Materials

Since its birth over 60 years ago, the locking nut "U-NUT" has continued to evolve in its locking performance, durability, and vibration resistance, backed by a wealth of trust and achievements.

• Tunnel Materials

Eco heat treatment

• Snow melting equipment

This booklet explains the causes of bolt loosening and serves as a guide to understanding proper fastening methods.

• Road signs and road accessories

This is a grating that reduces the risk of caster (wheel) entrapment and slipping on rainy days.

• Grating

Prevent collisions with the door entrance and accidents caused by diagonal entry! Protective fence for automatic doors.

• Protective fence

This is a drainage cover plate made using PET fiber reinforced cement.

• Gutters and U-shaped gutters

Open the lid from today.

• Gutters and U-shaped gutters

GRC partition board

• Paving Materials

Ideal for converting side ditches into underground channels! Thin plates used as embedded forms for concrete covers [also suitable for partial repairs].

• Gutters and U-shaped gutters

Explaining the key points for selecting bridge joints! Technical materials are available as a gift!

• Bridge Materials

A new adoption has been decided for the steel deck slabs of the metropolitan expressway! It contributes to excellent water resistance and improved durability as a pioneering product.

• Bridge Materials

Can seal large gaps! Pressure management allows for adjustment of sealing surface pressure.

• Tunnel Materials

Examples of introducing LED evacuation signs that are useful for developing disaster prevention infrastructure to encourage evacuation actions!

• Road signs and road accessories

Unique solar power generation system! Case study of cordless illuminated evacuation signs.

• Road signs and road accessories

Maintaining visibility even during power outages! Case study on the introduction of LED evacuation signs with built-in solar panels.

• Road signs and road accessories

Permeability coefficient of 1.3 cm/s, with a void ratio of 40% for excellent drainage effect! Installing it reduces the risk of injury from falls.

• Grating

[Available for rent] Voice calls and equipment data communication are possible even in tunnels and caves where radio waves do not reach, using a smartphone.

• Tunnel Materials
• Welfare and medical equipment
• others

Introduction of products made with biomass plastics containing recycled plastics and plant-derived components.

• Protective fence