中外道路 List of Products and Services

The "Super Guide Top Joint SGTd-K Type" is a bridge and elevated road expansion device that has established a refresh method for rubber part replacement maintenance. It features a structure suitable for steel deck plate bridges without notches, combining the vertical dual-side tooth structure of the Super Guide Top Joint with the horizontal single-side tooth structure of the Metal Top Super Joint. We offer zinc thermal spray types and other measures for salt damage and rust prevention. Additionally, metal spraying and surface anti-slip treatments are also available, so please feel free to consult us. 【Features】 ■ Structure for steel deck plates / Load-supporting type ■ Connector shape that connects the joint gap position to the center of the deck gap is also possible ■ Secondary waterproof structure that can be equipped with a "double waterproof unit" (patent registered) ■ Zinc thermal spray types and other measures for salt damage and rust prevention are available ■ Established a refresh method for rubber part replacement maintenance *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

At Chugai Road Co., Ltd., we have demonstrated consistent comprehensive capabilities from research and design to manufacturing, sales, and construction. Based on our extensive experience and achievements with various expansion devices, we address challenges arising from various conditions, including urgent repairs. We also respond promptly to requests that require both products and construction. *For more details, please refer to the PDF materials or feel free to contact us.*

• Bridge Materials

This catalog is the product catalog of Chugai Road Co., Ltd., which consistently conducts research, design, manufacturing, sales, and construction of expansion devices for bridges and elevated roads. It features a wide range of products, including the "Double Finger Super Joint DF Type," which combines durability and drivability through a finger wave structure, and the "Metal Gasket Joint NL-FLN Type," which complies with NEXCO specifications. Please make use of this for selecting products. [Contents (partial)] ■ Double Finger Super Joint DFH Type ■ Double Finger Super Joint DF Type ■ Metal Gasket Joint NTH-FL Type ■ Metal Gasket Joint NT-FFL Type ■ Metal Gasket Joint NLH-FL Type ■ Metal Gasket Joint NL-FLN Type ■ Metal Gasket Joint NL-FL Type ■ PCJ Super Joint PCJ Type ■ Super Gaitop Joint SGT Type ■ Super Gaitop Joint SGT-K Type, etc. *For more details, please download the PDF or feel free to contact us.

• Road facilities
• Bridge Materials

The "Super Guide Top Joint SGTd Type" is an expansion device for bridges and elevated roads that exhibits smooth and excellent driving performance due to its extremely small exposed surface area. It connects water-stop rubber through mold vulcanization and adhesive bonding, allowing for continuity. Its unique tooth structure provides seismic resistance against displacements (vertical and shear displacements) during earthquakes. Its simple structure and manageable weight make installation easy, and a refresh method for rubber part replacement maintenance has been established. 【Features】 ■ Vertical-type double-sided tooth structure / Load-supporting type for durability and reliability ■ Unique tooth structure provides seismic resistance against displacements (vertical and shear displacements) during earthquakes ■ Exhibits smooth and excellent driving performance, reducing noise and vibration generation ■ Connects water-stop rubber through mold vulcanization and adhesive bonding, allowing for continuity ■ Easy installation due to simple structure and manageable weight *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Metal Garge Joint NLd-FLN Type" is a vertical (one-sided) expansion device for bridges and elevated roads that complies with NEXCO specifications, featuring a tooth-shaped structure. It comes in eight types of expansion ranges, starting from "NLd-20FLN" with an allowable expansion of 20 (±10) mm to "NLd-70FLN" with 70 (±35) mm, as well as "NLd-90FLN" with 90 (±45) mm and "NLd-110FLN" with 110 (±55) mm. It meets the required performance standards, including structural safety, usability, and durability. 【Features】 ■ Structural safety performance... Load-bearing verification, deformation followability, seismic resistance ■ Usability performance... Driveability, waterproofing ■ Durability performance... Resistance to repeated vehicle traffic, durability against degradation due to usage environment ■ Social and environmental compatibility performance... Noise, vibration ■ Construction performance... Workability, quality ■ Maintenance management performance... Inspectability, repairability *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Metal Gage Joint NL-FL Type" is an expansion device for bridges and elevated roads that is easy to handle and allows for straightforward installation at the planned height. The main components are made of shaped steel and stud welding, eliminating the weak points of welded structures. The joint tooth gap is small, ensuring good drivability. It has gained high evaluations and trust based on years of performance in durability, drivability, and water-tightness, and was selected as a model during the formulation of the new NEXCO standards (July 2011), demonstrating excellent overall balance. 【Features】 ■ Vertical (one-sided) tooth structure / Load-supporting type ■ Durability backed by years of proven performance ■ Small joint tooth gap ensures good drivability ■ The water-stop section is filled with high-quality, highly waterproof elastic sealing material that has received high evaluations ■ Adoption of soundproofing materials reduces noise *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Double Finger Super Joint DF Type" is an expansion device for bridges and elevated roads featuring a horizontal (both sides) tooth structure. It has passed a fatigue test of 2 million cycles at a design load of PS200kN, equivalent to a design service life of over 40 years, demonstrating high safety and durability. With its well-established horizontal (both sides) tooth structure that ensures comfortable driving with low noise and low vibration, as well as the adoption of a secondary waterproofing structure, it contributes to the longevity of bridges through excellent overall balance. 【Features】 ■ Horizontal (both sides) tooth structure, load-supporting type, non-drainage structure ■ Durability and reliability due to the both sides tooth structure ■ Provides smooth and excellent drivability ■ Standard equipped with secondary waterproofing material "Double Waterproof Unit" ■ Reduction of noise and vibration generation due to the both sides tooth structure *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Metal Garg Joint NT-FFLDZ Type" is an expansion device for bridges and elevated roads that reduces vibrations and noise through its double-sided tooth profile, which mitigates impact during vehicle passage, and the use of excellent soundproofing filling materials. The anchor components utilize a bar method with stud welding, making the installation of the floor slab secure and easy. Special formwork for installation is not required, which shortens construction time. Due to its structure that encapsulates the waterproofing section within a surface steel formation, it is highly durable and has a long repair cycle. 【Features】 ■ Structural Characteristics... Double-sided tooth (double finger) structure, load-supporting type, non-drainage structure / T-shaped integral structure of cantilever beams ■ Durability... Eliminates the weak points of welded structures with stud welding of anchor bars, and the face plate and web plate are an integral T-shaped structure (shaped steel), ensuring high reliability with stud welding for anchor components, achieving durability ■ Rideability... Both the joint gap side and the post-poured concrete side are designed with tooth shapes to ensure excellent rideability / The protrusion length of the tooth shape on the face plate is also small, further reducing impact *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Gaislide Joint GS Type" is a load-supporting expansion device for bridges and elevated roads, designed with an overlapping structure for pedestrian walkways. It meets the various requirements expected of pedestrian expansion devices and supports safe and comfortable passage in various walking spaces. 【Features】 ■ Structural Characteristics... Simple structure with overlapping steel materials, load-supporting type, non-drainage structure / Structure with gaps covered by steel plates specifically for pedestrian use ■ Durability... High durability with support parts using reinforced concrete structure and stud anchors / The same steel materials as those used for roadways are employed, designed with a high safety factor against crowd loads ■ Passability... The surface of the roadway uses checker plates (hot-dip galvanized) considering pedestrian safety / The gap for expansion is shallow, designed with consideration for pedestrians ■ Water Resistance... Water-stopping parts use vulcanized adhesive water-stopping rubber ■ Workability... Simple structure with high workability ■ Maintainability... Rubber parts can be replaced for maintenance / The top plate (checker plate) is detachable, making inspection and repair of the water supply parts easy *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Gaislide Joint GS-NL Type" is a simple structure, load-supporting, non-drainage expansion device for sidewalks, made by overlapping steel materials. The steel materials used are the same as those for roadways, designed with a high safety factor against crowd loads. A ground cover joint (NLE) that integrates the sidewalk and ground cover is available. Additionally, it has good repairability and contributes to LCC (Life Cycle Cost). 【Features】 ■ Structural Characteristics... Simple structure with overlapping steel materials, load-supporting, non-drainage structure / Structure covered with steel plates for sidewalk-specific gaps ■ Durability... High durability with support parts using RC structure and stud anchors / Designed with a high safety factor against crowd loads using the same steel materials as for roadways ■ Passability... The surface of the roadway uses checker plates (hot-dip galvanized) for pedestrian safety / The gap for expansion is shallow, considering pedestrian convenience ■ Water Stopping... The water-stopping part is filled with high-quality elastic sealing material that has received high waterproof ratings ■ Workability... The top plate (checker plate) is detachable, making inspection and repair of the water-stopping part easy *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Gaitop Joint SKS Type" is an expansion device for new transportation systems, guideway buses, and urban monorails. It is a sister product of the vertical double-sided tooth-type load-supporting expansion device "Gaitop Joint," which has already received high praise from various government agencies, including the Ministry of Construction, as an expansion device for bridges and elevated roads. 【Features】 ■ Comfortable ride quality ■ Outstanding durability ■ Completely waterproof structure ■ Beautiful appearance ■ No rubber bulging or tearing ■ Type selection based on expansion amount ■ Easy installation and reduced construction time *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "CG Steel Joint NL-F Type" is a simple steel joint of the butt type with a vertical tooth profile (one-sided). It adopts a stud welding method for the anchor components, ensuring high robustness. It uses an elastic sealing material with good followability and high waterproofing properties. Due to its compact and narrow design, it is easy to install and is recommended for vertical joints. 【Features】 ■ Structural Characteristics... Simple steel joint of the butt type with a vertical tooth profile ■ Durability... Adopts a stud welding method for the anchor components, ensuring high robustness ■ Water Resistance... Uses an elastic sealing material with good followability and high waterproofing properties ■ Workability... Compact and narrow, making installation easy and recommended for vertical joints ■ Cost-effectiveness... A low-cost type that leverages the characteristics of steel tooth profiles and butt joints *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Raba Ace Joint RTH/RT-AS Type" is a butt-type rubber joint with a simple structure and vertical design that prioritizes initial cost. Its simple structure, along with the use of reinforced steel plates and stud anchors, ensures robustness through integration with the floor slab. It maintains high water-tightness due to excellent adhesion between the steel plate and sealing rubber achieved through vulcanized bonding. The joint gap is minimal, ensuring good running performance. Its lightweight and simple structure allows for high-quality construction with ease. 【Features】 ■ Structural Characteristics... A butt-type rubber joint with a simple vertical structure that prioritizes initial cost. ■ Durability... Robustness ensured through integration with the floor slab by adopting a simple structure and reinforced steel plates with stud anchors. ■ Water-tightness... High water-tightness achieved through vulcanized bonding with excellent adhesion between the steel plate and sealing rubber. ■ Running Performance... Minimal joint gap ensures good running performance. ■ Workability... Lightweight and simple structure allows for easy high-quality construction. ■ Economic Efficiency... Prioritizes cost performance, providing benefits in both the product itself and workability. *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Double Water Stop Unit" is a secondary water stop component with a continuous, joint-free structure that drains leakage and allows for guidance. Two methods (Method A / Method B) are available to accommodate various conditions. The installation of this unit can be done simultaneously during joint work. 【Types】 ■ Method A: Double Water Stop Unit for Floor Slab Installation ■ Method B: Double Water Stop Unit for Main Body Installation 【Features】 ■ A continuous, joint-free secondary water stop structure that drains leakage and allows for guidance ■ Two methods available to accommodate various conditions (Method A / Method B) ■ Simultaneous installation of the Double Water Stop Unit during joint work is possible *For more details, please download the PDF or feel free to contact us.

• Water stop

The "Super Rib SRS Type (Type 2)" is a snow removal device guiding plate designed to facilitate snow removal operations and extend the lifespan of joints. It reduces impact damage caused by contact between the snow removal device and the joint body. It guides the tips of snow plows and similar equipment, ensuring smooth passage for snow removal vehicles. We offer both single-side mounted and double-side mounted guiding plate types. 【Advantages of Installing the Super Rib (Optional)】 ■ Reduces impact damage caused by contact between the snow removal device and the joint body. ■ Guides the tips of snow plows and similar equipment, ensuring smooth passage for snow removal vehicles. *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

Our company has investigated the current state of damage to expansion joints in snowy and cold regions, focusing on the causes of damage and their characteristics, and has developed cold-region-compatible expansion joints. We have established a dust-proof layer in the device's gap section to prevent clogging by soil and debris, and installed internal steel plates beneath the dust-proof layer to resist the compressive forces of packed snow, thereby protecting the waterproof layer. In addition to the built-in temporary waterproofing material, we have standardly equipped the device with secondary waterproofing material aimed at long-term waterproofing, ensuring a structure that does not cause water leakage. 【Features】 ■ Anti-corrosion treatment... To prevent corrosion of steel materials due to freezing agents and rainwater, a high corrosion-resistant treatment of "aluminum-magnesium alloy thermal spraying" has been applied to the entire surface of the steel. ■ Protection of waterproofing material... A dust-proof layer has been established in the gap section of the expansion joint to prevent clogging by soil and debris, and internal steel plates have been installed beneath the dust-proof layer to resist the compressive forces of packed snow, thereby protecting the waterproof layer. Additionally, in conjunction with the built-in primary waterproofing material, we have standardly equipped the device with secondary waterproofing material aimed at long-term waterproofing, ensuring a structure that does not cause water leakage. ■ Snow removal measures... A snow plow guide plate compliant with the specifications of the Hokkaido Development Bureau has been installed. *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Metal Garge Joint NT-FFL Type" is a product designed to ensure excellent mobility by having both the joint gap side and the post-poured concrete side shaped like teeth. It eliminates the weak points of welded structures by using stud welding for the anchor bar, and the face plate and web plate are made of a T-shaped integrated structure (shaped steel). The anchor components utilize reliable stud welding, achieving durability. The anchor components adopt a bar method with stud welding, making the installation of the floor slab anchorage easy. 【Features】 ■ Structural Characteristics... Double finger structure on both sides; load-supporting type/T-shaped integrated structure for the beam ■ Durability... Eliminates the weak points of welded structures with stud welding for the anchor bar; the face plate and web plate are made of a T-shaped integrated structure (shaped steel), and the anchor components utilize reliable stud welding, achieving durability ■ Mobility... Both the joint gap side and the post-poured concrete side are shaped like teeth, ensuring excellent mobility; the tooth protrusion length of the face plate is also small, further reducing impact *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Metal Garge Joint NLt-FLSRFD Type" is a joint designed to withstand a compressive force of 10 kN in areas with heavy snowfall. The main components are shaped steel and stud welding, based on the long-standing proven performance of the NL-FL type, which is also rated for a compressive force of 10 kN. Additionally, it allows for easy concrete pouring and ensures tight compaction, enabling a strong integration between the joint body and the floor slab. 【Features】 ■ Structural Characteristics... Vertical (one-sided) double-sided tooth structure, load-supporting type, non-drainage structure / reverse L-shaped integral structure of the supporting beam ■ Durability... The main components are shaped steel and stud welding, based on the long-standing proven performance of the NL-FL type, rated for a compressive force of 10 kN ■ Mobility... The joint tooth gap is small, ensuring good mobility ■ Water Resistance... The water stop section is filled with high-quality, highly waterproof elastic sealing material (passed water stop performance tests as per NEXCO test method 438) ■ Noise Reduction... The tooth structure reduces tire impact, and the use of soundproofing fillers effectively reduces noise *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Metal Top Super Joint MTS Type" is an expansion device for bridges and elevated roads that has undergone anti-corrosion treatment through hot-dip galvanization on the entire surface of the main body. The use of a tooth profile instead of a straight line at the tire contact point during joint passage improves drivability. The adoption of seamless P.K.G. prevents water leakage and the dropping of soil. Since it is detachable, the main body can be replaced easily, making repairs straightforward. 【Features】 ■ Structural characteristics ■ Durability ■ Workability ■ Drivability ■ Water-stopping ability ■ Repairability *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Metal Top Super L Joint MTS-L Type" is a product with a horizontal (one-sided) tooth structure, load-supporting type, and non-drainage structure. The entire body is treated with anti-corrosion processing through hot-dip galvanization. The setter method enables complete construction and shortens the construction period. Additionally, the small gap in the joint tooth structure ensures excellent running performance. Since it is detachable, the main body can be replaced easily for repairs. 【Features】 ■ Structural Characteristics... Horizontal (one-sided) tooth structure, butt joint type, non-drainage structure ■ Durability... Anti-corrosion treatment through hot-dip galvanization on the entire body ■ Workability... Complete construction and shortened construction period achieved through patented setter method ■ Running Performance... Small gap in the joint tooth structure ensures excellent running performance ■ Water Stopping Ability... Adoption of seamless P.K.G prevents leakage and falling of soil ■ Repairability... Detachable design allows for easy replacement and repair of the main body *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "PCJ Super Joint" is a compact vertical (one-sided) tooth-shaped structure and load-supporting type of simple steel joint. It simplifies and miniaturizes the versatility of metal guard joints, thereby expanding its applications. Robustness is ensured through the stud welding method for anchor components. Additionally, it is lightweight, compact, easy to handle, and facilitates straightforward installation. It achieves cost reduction while maintaining the performance required of simple steel joints. 【Features】 ■ Structural Characteristics... Compact vertical (one-sided) tooth-shaped structure and load-supporting type of simple steel joint / Simplifies and miniaturizes the versatility of metal guard joints to expand applications. ■ Durability... Robustness is ensured through the stud welding method for anchor components. ■ Water Resistance... Uses elastic sealing material with good followability and high waterproofing (passes water stop performance tests as a specimen for NEXCO test method 438). ■ Workability... Lightweight, compact, easy to handle, and facilitates straightforward installation. ■ Economic Efficiency... Achieves cost reduction while maintaining the performance required of simple steel joints. *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Raba Ace Joint RTS Type" is an expansion device for bridges and elevated roads that ensures a large expansion range (up to 90) with a simple structure and small joint play. By integrating special rubber and steel plates through vulcanization and adhesion, durability is improved, eliminating cracks and bulges. The double waterproof structure of RTS rubber and RTS seamless P.K.G prevents leakage. The special setter method allows for accurate and easy installation. 【Features】 ■ Structural Characteristics... Ensures a large expansion range (up to 90) with a simple structure and small joint play / High versatility suitable for not only roadways but also sidewalks and vertical joints, non-drainage structure / Patent bending (up and down movement) follow-up maximum values of 40mm (RTS-35), 60mm (RTS-50), and 1000mm (RTS-90) ■ Durability... Improved durability through the integration of special rubber and steel plates via vulcanization and adhesion, eliminating cracks and bulges ■ Waterproofing... Prevents leakage with the double waterproof structure of RTS rubber and RTS seamless P.K.G ■ Workability... Accurate and easy installation due to the special setter method *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Setter Method" is a unique technique that ensures the reliable integration of expansion devices and post-poured concrete. It allows for the precise placement and fixation of removable expansion device anchor bolts in the end notch of beams, enabling post-poured concrete to be solidly filled without gaps. 【Features】 ■ Easy to ensure the flatness of the pavement surface and the joint body ■ Accurate positioning of anchor bolts ■ Simple installation and removal of special formwork (Setter) ■ Easy complete pouring and verification of post-poured concrete on the underside of the joint ■ Easy application of leveling material to prevent gaps caused by concrete drying shrinkage *For more details, please download the PDF or feel free to contact us.

• Bridge Materials
• Bridge Construction

This construction method allows for the easy replacement of only the waterproof rubber on-site, without damaging the main body itself, which is equipped with a guide top joint. The guide top joint demonstrates excellent performance in terms of durability, drivability, and noise and vibration. The establishment of this method truly showcases its unique capabilities and contributes to reducing social costs. 【Features】 ■ Short construction period ■ Low noise ■ Low cost *For more details, please download the PDF or feel free to contact us.

• Bridge Materials
• Bridge Construction

The "Super Rib SRS Type" is an expansion device for bridges and elevated roads designed to facilitate snow removal operations and extend the lifespan of joints. It reduces impact damage to the joint body caused by contact with snow removal equipment. It guides the tips of snow plows and similar equipment to ensure smooth passage for snow removal vehicles. [Advantages of Installing the Super Rib (Optional)] ■ Reduces impact damage to the joint body caused by contact with snow removal equipment. ■ Guides the tips of snow plows and similar equipment to ensure smooth passage for snow removal vehicles. *For more details, please download the PDF or feel free to contact us.

• Bridge Materials

The "Crosstop Joint CT Type" is a joint used at the intersections of vertical and horizontal joints that occur during widening and replacement construction. It accommodates various situations without compromising elasticity, waterproofing, or aesthetics. 【Main Material Specifications】 ■CT Plate / JIS G3101 General Structural Rolled Steel SS400 ■CT Anchor / JIS G3112 Deformed Steel Bars for Reinforced Concrete SD345 (equivalent) ■CT Rubber / CR (Chloroprene Rubber) *For more details, please download the PDF or feel free to contact us.

• Bridge Materials