List of Road, bridge and tunnel materials products
- classification：Road, bridge and tunnel materials
316～360 item / All 3134 items
Easily connect pipes with different outer diameters! A fitting suitable for emergency repairs of buried pipes.
- others
A bridge joint with minimal shock during operation and low noise! Load-supporting steel expansion device.
- Bridge Materials
Construction machine model equipped with a self-propelling function and an electric power unit.
- Road facilities
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The texture of the sandy soil is suitable for the landscape of historic buildings!
- Paving Materials
Concrete with excellent environmental performance that can absorb and fix a large amount of CO2.
- Grating
It has a double safety structure to prevent the lid from popping up and scattering.
- Drainage and ventilation equipment
- Gutters and U-shaped gutters
Side Ditch Comprehensive Catalog Additional Publication
We have added a comprehensive catalog of various types of ditches that are clearly classified and explained.
Measures against guerrilla rainstorms, enhancing road surface drainage functions. Minimally invasive and non-destructive small cross-section ditches "Smart Drain."
- Gutters and U-shaped gutters
- Dam construction
Side Ditch Comprehensive Catalog Additional Publication
We have added a comprehensive catalog of various types of ditches that are clearly classified and explained.
Achieving economy, strength, and durability, the two-row drainage channel and slit holes capture rainwater!
- Gutters and U-shaped gutters
- Dam construction
Side Ditch Comprehensive Catalog Additional Publication
We have added a comprehensive catalog of various types of ditches that are clearly classified and explained.
This is the "Comprehensive Catalog of Ditches" featuring safe and secure soil industry "circular waterways" and "ditches."
- Gutters and U-shaped gutters
- Secondary paving products
Introducing points and NETIS registered products that prevent water accumulation on roads and rainwater runoff to private land due to high drainage functionality!
- Inspection hatches, manhole covers, and ditch covers
- Gutters and U-shaped gutters
- Dam construction
Steel side ditches made of high-tensile steel (high-strength steel) that achieve high strength, high durability, and high safety.
- Gutters and U-shaped gutters
- Airport facilities
The replacement of the side ditch construction has been shortened to 1/4 with "high-tensile steel," which ensures the securing of water flow cross-sections and good workability!
- Inspection hatches, manhole covers, and ditch covers
- Gutters and U-shaped gutters
- Pavement construction
Type-specific 'weed control materials' solve the problems of traditional weed control methods!
- Paving Materials
- Landscaping materials
- Exterior Materials
We handle various weed control materials such as concrete sheets, flexible weed control tiles, and quick-setting solidifying agents for weed control!
"High durability and high functionality weed control materials solve conventional problems!" Concrete Canvas: A concrete mat that hardens just by adding water Grass Top: Prevents weed growth for an extended period, making management easy Denka Fuse Grass: A rapid hardening material that hardens in 5 minutes with water and can be opened the next day 【Concrete Canvas Features】 ■ A concrete mat that hardens just by adding water ■ Easy installation without the need for weighing or mixing ■ Can be cut and adjusted using common tools before hardening ■ Can reduce material usage by up to 95% compared to conventional concrete ■ Expected to achieve an 80% increase in strength within 24 hours 【Grass Top Features】 ■ Easily hinders weed growth ■ Harmonizes with the surrounding nature without compromising the growth environment of living organisms ■ Flexible enough to adapt to uneven surfaces and curves ■ Usable in narrow sites where heavy machinery or vehicles cannot access, allowing for manual installation 【Denka Fuse Grass Features】 ■ A rapid hardening material that hardens in 5 minutes with water and can be opened the next day ■ Exhibits excellent weed control effects in various locations where weeds grow ■ Can be easily installed in three steps, hardening in about 5 minutes after spraying ■ Contributes to global warming mitigation by absorbing CO₂ from the atmosphere
For weed control on slopes and fences, and measures against overflow in waterways. Here are four products that can be easily installed.
- Paving Materials
- Protective fence
Simple installation that only requires leveling and watering! It significantly reduces dust during construction.
- Paving Materials
- Pavement construction
Introducing a special cement-embedded fabric with excellent fire resistance and freeze-thaw resistance, suitable for a wide range of applications!
- Paving Materials
- Pavement construction
- cement
Can be adapted to curved sections and areas with obstacles! Designed to fit existing waterways.
- Gutters and U-shaped gutters
- Civil Engineering Method
Introducing high-durability weed control products, including soil-based paving materials, special cement-embedded fabrics, and slope blocks!
- Slope protection material
- Paving Materials
- cement
A slit-type full collection structure suitable for barrier-free drainage treatment. We offer a rich lineup. We have 20 years of experience and achievements.
- Gutters and U-shaped gutters
- Dam construction
Side Ditch Comprehensive Catalog Additional Publication
We have added a comprehensive catalog of various types of ditches that are clearly classified and explained.
Commercializing optimal drainage structures based on experimental data from industry, government, and academia. A circular waterway that maximizes the functionality of drainage pavement.
- Secondary paving products
Side Ditch Comprehensive Catalog Additional Publication
We have added a comprehensive catalog of various types of ditches that are clearly classified and explained.
Simple structure and high durability. Steel side ditches with a reduced cross-section design.
- Gutters and U-shaped gutters
- Dam construction
Side Ditch Comprehensive Catalog Additional Publication
We have added a comprehensive catalog of various types of ditches that are clearly classified and explained.
There are no gradient breaks, and the safety of the road shoulder is improved! The water flow capacity is about twice that of the conventional L-shaped drainage channel.
- Drainage and ventilation equipment
- Gutters and U-shaped gutters
Side Ditch Comprehensive Catalog Additional Publication
We have added a comprehensive catalog of various types of ditches that are clearly classified and explained.
We will introduce examples of smart drains installed in roads, sidewalks, parking lots, and parks.
- Gutters and U-shaped gutters
- Dam construction
Side Ditch Comprehensive Catalog Additional Publication
We have added a comprehensive catalog of various types of ditches that are clearly classified and explained.
12% cost reduction compared to conventional methods! Achieving a large-capacity and reliable wide collection slit!
- Gutters and U-shaped gutters
- Secondary paving products
Side Ditch Comprehensive Catalog Additional Publication
We have added a comprehensive catalog of various types of ditches that are clearly classified and explained.
Cost reduction through lightweight and space-saving construction! Improved safety for cycling due to the elimination of puddles.
- Drainage and ventilation equipment
- Gutters and U-shaped gutters
Are you having trouble with the drainage ditches where large vehicles frequently cross? We would like to introduce you to sturdy drainage ditches that have a proven track record at factory entrances a...
- Gutters and U-shaped gutters
- Paving of sidewalks, roads, parking lots and stadiums
We handle various weed control materials such as concrete sheets, flexible weed control tiles, and quick-setting solidifying agents for weed control!
- Paving Materials
- Landscaping materials
- Exterior Materials
Solving the problems of conventional weed control methods! 'Weed Control Materials'
Traditional weed control methods have the following issues: Weed control sheets: - Replacement is necessary within a short period due to UV degradation. - Installation is easy, but the lifespan is short. - There are concerns about peeling and scattering due to strong winds. In the case of concrete paving (seal concrete): - Difficult to install in narrow sites due to heavy machinery. - The processes of formwork installation and surface finishing are complicated, requiring skilled workers for formwork. - The curing period is long. - Joint materials must be installed to prevent cracking. In the case of mortar spraying: - Difficult to install in narrow sites due to heavy machinery. - It is necessary to use wire mesh to prevent cracking and peeling. - Quality is affected by mix design and weather conditions. - There is variability in quality after curing, with concerns about cracking due to drying shrinkage. 《High durability and high-functioning weed control materials solve traditional problems!》 Concrete canvas: A concrete mat that hardens just by adding water. Grasstop: Prevents weed growth for a long time, making management easier. Denka Fuse Grass: Hardens in 5 minutes with water, allowing for opening the next day with rapid hardening material. *We also handle various other weed control materials.
Just attach it to the existing fence with the end band! It's lightweight and can be bent.
- Net fence
- Protective fence
Three products, YF-GLA-080, YF-GLB-080, and YF-GLC-080, are now available in the lineup!
- Protective fence
Newly developed base with excellent inspection performance × fatigue strength! Hybrid anchor bolt made of stainless steel and steel material.
- Paving Materials
A comprehensive catalog of street furniture that combines functionality and design for various public spaces such as streets, parks, and squares!
- Protective fence
- Sign System
- Other lighting fixtures
Bridge expansion device proven to last 100 years! No replacement needed for new bridges for 100 years! Long-term water-tightness, maintenance-free [NEXCO specification compliant product].
- Foundation construction
- Bridge Materials
[News Release Distribution] Durability proven for 100 years by a third-party organization! Attention on "Hybrid Joint 3LII"
Crittec Co., Ltd. issued a press release via PR TIMES on May 27, announcing that the durability of their bridge expansion device "Hybrid Joint 3LII" has been officially proven to be equivalent to 100 years by a third-party organization. This press release provides a compelling account of how the 3LII achieves "100-year durability," detailing its history and the passion invested in its development, presented in a fervent narrative style reminiscent of Project X by our company president. This product, which contributes to the realization of long-lasting infrastructure, is attracting significant attention. For more details, please see the news release. ▶PR TIMES "Achieve a Bridge That Lasts 100 Years" - Crittec Co., Ltd. [Hybrid Joint 3LII] Officially Proven 100-Year Durability https://prtimes.jp/main/html/rd/p/000000004.000159021.html
A thorough comparison of the "rust conversion type anti-corrosion coating Earth Coat rust prevention - coating system" and "conventional method coating systems" across 13 key items of interest.
- Steel structure construction
- Road facilities
- Rust Inhibitor
In order to receive prioritized, planned, and intensive support for the road maintenance project implemented based on the Basic Plan for Infrastructure Longevity, it is essential!
- Renovation and repair methods
- Rust Inhibitor
- Bridge Materials
Easy setup of crane swing range and no-entry area! You can swing as is after installation.
- Protective fence
The product height is low! Responding to the demand for low-height expansion devices! A thinness that fits within the typical pavement thickness: "Hybrid Joint TS Type."
- Bridge Materials
There are construction case studies for disaster recovery work! No curing period is required, allowing for a shortened construction period.
- Paving Materials
Injection and filling materials for cracks
- Paving of sidewalks, roads, parking lots and stadiums
- Road construction
- Paving Materials
With simple maintenance, the beautiful shine lasts, keeping running costs low and economical!
- Tunnel Materials
2025 Good Design Award" winner! Mitsuba Drain has also been selected as "My Chosen Item.
The announcement of the 2025 Good Design Award (organized by the Japan Design Promotion Association) was made on October 15, 2025. This time, Nihon Doren Co., Ltd. received two Good Design Awards. Additionally, the focused drainage pipe "Mitsuba Doren" was selected for the special selection "My Chosen Item" by the Good Design Award judging committee. It has been highly evaluated as an excellent design that merges traditional wisdom with modern technology.
Tensioning machine for guard cables using a hydraulic pull cylinder.
- Protective fence
Achieving smooth evacuation in emergencies! We capture the needs of the times and continue to evolve!
- Tunnel Materials