List of Road, bridge and tunnel materials products

100% recycled gypsum derived from waste gypsum boards is reused as raw material, achieving effective carbon neutrality during manufacturing!

• Gypsum board and moldings

Developing equipment and technology for air conditioning, water supply and drainage, and kitchen drainage!

• Air conditioning equipment
• Water Treatment Plant
• Water supply 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