Expansion device(nexco) - List of Manufacturers, Suppliers, Companies and Products | IPROS

Last Updated： Aggregation Period:Aug 12, 2026～Sep 08, 2026
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Expansion device Product List

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Expansion Device 【Hybrid Joint】 Construction Example Wakayama Prefecture

Expansion Device 【Hybrid Joint】 Construction Example Wakayama Prefecture

We would like to introduce a case study of the hybrid joint (Type 3L), a bridge expansion device that excels in water resistance and durability.

Crittec Co., Ltd. not only sells products but often takes full responsibility for installation work as well. We strive to improve our products by considering the issues that arise during installation and the damage conditions of the removed existing expansion devices. 【Construction Case】 ○ Location: Wakayama Prefecture ○ Bridge Name: Takasegawa Bridge ○ Product: 3L-400 ○ Comment: Due to the heavy weight of the product and the strong winds at the high-altitude site, we exercised utmost caution when lifting with a crane from below the girder and during installation. For more details, please contact us or request a catalog.

  • Bridge Materials
  • Expansion device

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Expansion Device Hybrid Joint [Construction Example Ehime Prefecture]

Expansion Device Hybrid Joint [Construction Example Ehime Prefecture]

We would like to introduce a case study of the hybrid joint (3L type) for bridge expansion devices, which excels in water resistance and durability.

Crittec Co., Ltd. not only sells products but often takes responsibility for installation work as well. We strive to improve our products by considering issues that arise during installation and the condition of existing expansion devices that have been removed. 【Construction Case】 - Location: Ehime Prefecture - Bridge Name: Oshima Bridge - Product: 3L-300 - Comment: Since work had to stop when boats passed under the bridge, we conducted the installation with a supervisor present. It was impressive to see many cyclists stopping on the bridge to take photos of the scenery visible from there. For more details, please contact us or request a catalog.

  • Joints between components
  • Expansion device

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Expansion device "Hybrid Joint NS~LL Type (with guide plate)"

Expansion device "Hybrid Joint NS~LL Type (with guide plate)"

By installing the guide board, it prevents damage to the main body by the grader in snowy areas.

The hybrid joint is a non-drainage expansion device developed using a composite technology of rubber and steel materials, achieving very high water-tightness by press vulcanizing and bonding steel plates and rubber. Furthermore, by adopting a steel vertical shape for the load-bearing structure, the surface exposure area has been minimized, improving sound insulation and durability. The range of products available includes both small and large items, accommodating expansion amounts from 20mm to 175mm, and a maximum applicable slab gap of 395mm. 【Features】 ○ High water-tightness ○ Steel vertical tooth shape ○ One-lane assembly product ~~ Currently seeking agents; agents from the Tohoku and Hokuriku regions are very welcome! Of course, we can also accommodate companies from other regions! ~~ For more details, please contact us or request a catalog.

  • Joints between components
  • Expansion device

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Expansion Device 【Hybrid Joint】 Construction Example Tokyo, Eitai Bridge

Expansion Device 【Hybrid Joint】 Construction Example Tokyo, Eitai Bridge

We would like to introduce a case study of the hybrid joint (NS to LL type) for bridge expansion devices, which excels in water resistance and durability.

Crittec Co., Ltd. not only sells products but often takes full responsibility for installation work as well. We strive to improve our products by considering the issues that arise during installation and the condition of the removed existing expansion devices. 【Construction Case】 ○ Location: Tokyo ○ Bridge Name: Eitai Bridge ○ Product: L-100 and others ○ Comment: Eitai Bridge is Japan's first iron bridge and was the first bridge to exceed a span length of 100 meters as a road bridge. Due to its historical significance, it was selected as one of the "First Civil Engineering Heritage" by the Japan Society of Civil Engineers in 2000, along with Kiyosu Bridge. Additionally, in 2007, it became the first road bridge designated as an Important Cultural Property (building) by the national government. For more details, please contact us or request a catalog.

  • RIMG0443.JPG
  • Bridge Materials
  • Expansion device

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Expansion device "Hybrid Joint"

Expansion device "Hybrid Joint"

[NETIS Registered Product] A bridge expansion device with high water stop performance, comfortable driving, and ultra-low noise.

This is a bridge expansion device adopted nationwide, primarily by the Ministry of Land, Infrastructure, Transport and Tourism, NEXCO, urban expressways, local governments, and other public organizations. 【Features (excerpt)】 ◆ Compatible with small to large bridges Handles expansion amounts from 20mm to 600mm, with a maximum gap of 1230mm. Other specifications can be designed separately. ◆ Usable for all types of bridges Can be used for all types of bridges, including steel bridges, PC bridges, RC bridges, as well as arch bridges and curved bridges. ◆ High water-tightness "NS-LL type": The steel plate and sealing rubber are bonded using a mold (press vulcanization bonding), preventing separation between the steel plate and rubber. ◆ Safe and easy installation Can be installed using a 4-ton unic crane without the need for large machinery like medium to large rough terrain cranes, allowing for safe and easy (speed-up) construction. Here’s a brief introduction to some installation examples! ~~ At the Tochigi Prefecture Nikko Civil Engineering Office (Maruyama Bridge), a "Hybrid Joint" was used for renovation work. * NS-LL type repair ~~ At the Kinki Regional Development Bureau Kinokawa River National Road Office (Takasegawa Bridge), it was used for a newly constructed bridge. * 3L type For more details, please contact us or download the catalog.

  • Foundation construction
  • Road signs and road accessories
  • Expansion device

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Expansion Device Hybrid Joint [Construction Example Kanagawa Prefecture]

Expansion Device Hybrid Joint [Construction Example Kanagawa Prefecture]

We will introduce examples of the construction of hybrid joints (NS to LL type) for bridges, which excel in water resistance and durability.

Critic Co., Ltd. not only sells products but also often takes responsibility for installation work, striving to improve products by considering issues that arise during installation and the condition of damaged existing expansion joints that have been removed. 【Construction Case】 ○ Location: Kanagawa Prefecture ○ Bridge Name: Otake Bridge ○ Product: S-40 and others ○ Comments: The existing joint was of the slide type, and the replacement was carried out after painting and paving had already been completed. The thickness of the deck slab is approximately 200mm, so care was taken not to remove the slab during chipping and excavation, as well as during the installation of reinforcing anchors, and protective measures were taken to avoid damaging the pavement and paint. Additionally, since it is a living road used for commuting and walking, restrictions were implemented with the assistance of guides for partial regulation. For more details, please contact us or request a catalog.

  • Joints between components
  • Expansion device

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Expansion device [Hybrid Joint] NS to LL type

Expansion device [Hybrid Joint] NS to LL type

Bridge expansion device designed with consideration for the surrounding environment of bridges, achieving high water stop, ultra-low noise, and comfortable travel. 【(Former) NETIS registered product】

The hybrid joint is a non-drainage expansion device developed using a composite technology of rubber and steel, achieving very high water-tightness by press vulcanizing and bonding steel plates and rubber. Furthermore, by adopting a steel vertical shape for the load-supporting structure, the surface exposure area is minimized, enhancing both quietness and durability. The range of products available includes both small and large items, capable of accommodating expansion amounts from 20mm to 175mm and a maximum slab gap of 410mm. 【Features】 ○ High water-tightness for 50 years ○ Steel vertical tooth shape ○ Long-term durability for 50 years ○ One-lane assembly product ○ Certified product that passed water-tightness and durability tests for metropolitan expressway specifications For more details, please contact us or request a catalog.

  • S・L・LLタイプ設置写真.jpg
  • R0021887.JPG
  • Foundation construction
  • Dam construction
  • Expansion device

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Expansion device "PCJ Super Joint PCJ Type"

Expansion device "PCJ Super Joint PCJ Type"

Vertical (one-sided) tooth-shaped structure / load-supporting type! Both the main body and price are lightweight and compact.

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.

  • PCJスーパージョイント PCJ型_02.jpg
  • Bridge Materials
  • Expansion device

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What is a bridge expansion device? Features of hybrid joints [Free materials available]

What is a bridge expansion device? Features of hybrid joints [Free materials available]

What is an expansion device? The roles and required functions in bridges and highways - The eight major features that hybrid joints fulfill.

A bridge expansion device is something that is installed in the gaps (expansion gaps) between the bridge abutment and the bridge girder, or between bridge girders. When designing a bridge, it is necessary to create expansion gaps to prevent the bridge girders from colliding with the bridge abutments or with each other due to thermal expansion and contraction. To cover these gaps and ensure safe passage for vehicles and pedestrians, a bridge expansion device is required. The role of the expansion device is to fill the gaps, but it is not sufficient for it to only fulfill that function. Consideration must be given to the safe passage of vehicles and economic aspects, and specifically, the following functions are highlighted: [Functions Generally Required of Expansion Devices] - No noise during travel - No impact during travel - Long-term usability - No leakage under the girder - Easy installation - Simple and cost-effective maintenance - Low cost of the device itself Our hybrid joint has eight major features that meet the required functions: - Compatible with small bridges to long-span bridges - Usable for all types of bridges - Ultra-low noise and comfortable travel - Long-term durability and maintenance-free - High water-tightness - Safe and easy installation - Replaceable - Economical

  • イプロス画像_LLタイプ_耐久性50年_260406.jpg
  • イプロス画像_260406_LLタイプ施工後.jpg
  • イプロス画像_260406_LLタイプ_余戸南.jpg
  • イプロス画像_260406_耐久性100年_3L?A.jpg
  • イプロス画像_260406_3L?A_余戸南.jpg
  • Foundation construction
  • Expansion device

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Expansion device "Metal Garg Joint NLt-FLSRFD type"

Expansion device "Metal Garg Joint NLt-FLSRFD type"

Vertical (one-sided) tooth structure, load-supporting type, non-drainage structure! The maximum floor slab gap applicable is large and economical.

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.

  • メタルガージョイントNLt-FLSRFD型_02.jpg
  • Bridge Materials
  • Expansion device

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"Buried expansion device construction" and "coating system slab waterproofing work" in accordance with performance verification testing.

"Buried expansion device construction" and "coating system slab waterproofing work" in accordance with performance verification testing.

The NEXCO testing method complies with the testing guidelines for waterproofing of road bridge decks and meets the requirements for elasticity, water resistance, and durability suitable for small-scale bridges.

【Features】 ■ More than 15% reduction in construction costs compared to conventional methods ■ Can be easily constructed at room temperature, allowing for shortened construction periods ■ Passed performance verification tests for 15 years ※ This method is considered in conjunction with "expansion device installation work" and "deck waterproofing work." ※ For more details, please contact us or download the PDF to view.

  • Coating film waterproofing material/permeable waterproofing material
  • Civil Engineering Company
  • Civil Engineering CAD
  • Expansion device

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Expandable device Hybrid joint Durability 100 years 3LII type

Expandable device Hybrid joint Durability 100 years 3LII type

A newly constructed bridge requires no replacement for 100 years! Long-term water resistance, maintenance-free.

In the longevity of bridges, the durability of expansion joints is a very important factor. Replacing expansion joints requires significant costs and traffic regulations, which can reduce the operational efficiency of bridges. The Hybrid Joint Type 3LII achieves a durability of 100 years, contributing to cost reduction and improved safety from a long-term perspective. 【Application Scenarios】 - New bridges - Repairs of existing bridges - Highways * For general roads, there is the "Hybrid Joint Type 3LIIA." 【Benefits of Implementation】 - Reduction in lifecycle costs due to no need for replacement for 100 years - Maintenance-free, eliminating the need for sound inspections and ultrasonic inspections, reducing maintenance costs - Decreased frequency of traffic regulations, mitigating traffic congestion and noise damage, and enhancing safety - Adoption of new technology through NETIS registration (No. KT-210067-A)

  • 3L?タイプ　550-550.jpg
  • 3L?タイプ　550-550　宇治川大橋.jpg
  • 3L?タイプ　飛越大橋　002.jpg
  • 3L?タイプ　沢内橋.jpg
  • 3L?タイプ　新地きずな橋　01.jpg
  • 3L?タイプ　550-550　3L?施工.jpg
  • 3L?タイプ　布志名高架橋.jpg
  • 3L?タイプ　新地きずな橋　02.jpg
  • Foundation construction
  • Bridge Materials
  • Expansion device

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Hybrid Joint NS-LL Type: A Stretchable Device with Excellent Water Stopping Properties

Hybrid Joint NS-LL Type: A Stretchable Device with Excellent Water Stopping Properties

The adhesion between the steel plate and rubber was confirmed to have no delamination in the tensile test!

The Hybrid Joint NS-LL type is manufactured using the press vulcanization bonding technology, which is also used in the production of bearings. Regarding the bonding part, it has been confirmed through a tensile test by the Chemical Substance Evaluation Research Organization that the failure mode was material failure rather than cohesive failure, meaning there was no delamination. This indicates that the steel plate and rubber are bonded very strongly, making it a product with excellent water-tightness. In addition to the strong adhesive force between the rubber and the steel plate, the structure is designed so that the water-stopping rubber does not come into direct contact with the tires of passing vehicles, making it less prone to wear. The range of products available includes both small and large items, accommodating expansion amounts from 20mm to 175mm and a maximum applicable slab gap of 395mm. **Features** - High water-tightness - Steel vertical tooth shape - One-lane assembly product ~~ We are currently seeking agents! Agents from the Tohoku and Hokuriku regions are very welcome! Of course, we also accommodate companies from other regions! ~~ For more details, please contact us or request a catalog.

  • S・L・LLタイプ設置写真.jpg
  • R0021887.JPG
  • Foundation construction
  • Dam construction
  • Expansion device

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Expansion device "Hybrid Joint NS-LL Type"

Expansion device "Hybrid Joint NS-LL Type"

[Agents Wanted] The connection points between joints are factory vulcanized and bonded, achieving very high water resistance.

Crittec Industries Co., Ltd. has continued to develop expansion devices for bridges that are environmentally friendly and contribute to environmental protection, fulfilling its responsibilities as a comprehensive manufacturer of expansion devices for road bridges. We will continue to adhere to this policy, conducting all development, design, and manufacturing processes in-house to create products that meet our customers' needs. Additionally, Crittec Industries Co., Ltd. often takes responsibility not only for product sales but also for installation work, striving to improve products by considering issues that arise during installation and the condition of removed existing expansion devices. Our product lineup is extensive, ranging from small to large products, capable of accommodating expansion amounts from 20mm to 175mm and a maximum slab gap of 395mm. 【Features】 ○ High watertightness ○ Steel vertical tooth shape ○ One-lane assembly product ~~ We are currently seeking agents! Agents from the Tohoku and Hokuriku regions are very welcome! Of course, we also accommodate companies from other regions! ~~ For more details, please contact us or request a catalog.

  • S・L・LLタイプ設置写真.jpg
  • R0021887.JPG
  • Foundation construction
  • Dam construction
  • Expansion device

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