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

Last Updated： Aggregation Period:May 13, 2026～Jun 09, 2026
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Expansion device Product List

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NEXCO specifications expansion device new product born! Obtaining NEXCO certification!

NEXCO specifications expansion device new product born! Obtaining NEXCO certification!

New product NEXCO certified | CF-20 | NCF type | 3LII-150 | 3LII-160 |

To adopt our products on the expressway (NEXCO), it is necessary to obtain certification in accordance with NEXCO's guidelines. Our lineup for NEXCO has traditionally included the CF type (expansion amounts of 30, 50, and 80mm) and the 3LII type (expansion amounts of 200, 250, 300, and 350mm). However, there was a gap between 80mm and 200mm, making it difficult to provide good proposals for projects requiring an expansion amount of 100mm. To address this demand, we developed the NCF-100 with an expansion amount of 100mm, and the 3LII-150 and 3LII-160 with expansion amounts of 150mm and 160mm, respectively. Additionally, we developed the CF-20 with a compact design and an expansion amount of 20mm, as well as the NCF type that can handle snow compaction. We are pleased to announce that these new products have received new certification from NEXCO. It is worth noting that the expansion amounts of 150mm and 160mm are close because the order documents may specify those exact expansion amounts. Please feel free to request materials or contact us at the timing of your product consideration before bidding or after winning the bid.

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  • Bridge Materials
  • Expansion device

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NEXCO Specification Expansion Device "Hybrid Joint CF Type"

NEXCO Specification Expansion Device "Hybrid Joint CF Type"

A bridge joint with minimal shock during operation and low noise! Load-supporting steel expansion device.

The "CF type" is a bridge expansion device that employs a waterproof structure using elastic seals. Its tooth-shaped design minimizes shocks during travel and reduces noise. Due to factory assembly, it allows for shorter construction time, improved ease of installation, and cost reduction. It is a product that complies with the NEXCO standards revised in July 2011. There is also a snow pressure-resistant product called the "NCF type." 【Features】 - High waterproof performance due to elastic seals - Low noise for comfortable travel - Reduced construction time - Cost reduction - Compliance with NEXCO standards - Basic specifications include a secondary waterproofing material attachment type For more details, please refer to the catalog. Feel free to contact us with any inquiries.

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  • Bridge Materials
  • Expansion device

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Expansion device "Metal Garg Joint NLd-FLN type" NEXCO specification

Expansion device "Metal Garg Joint NLd-FLN type" NEXCO specification

Standard equipped with double waterproofing unit! Meets NEXCO performance requirements.

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.

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  • Bridge Materials
  • Expansion device

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Expansion device "Steel Finger Joint"

Expansion device "Steel Finger Joint"

We are manufacturing expansion devices for bridges (steel finger joints).

We are capable of detailed design in-house and can undertake everything from design to on-site delivery as a single package. Additionally, we can also manufacture seismic reinforcement components (such as anti-fall structures and displacement limit devices) and inspection paths, which are auxiliary structures for bridges, in addition to expansion devices. Please feel free to contact us for product estimates.

  • Bridge Construction
  • Bridge Materials
  • Expansion device

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Expandable device [Hybrid Joint] 3LIIA type

Expandable device [Hybrid Joint] 3LIIA type

[NETIS Registered Product] Supports large expansion (200-600mm) and wide spacing (up to 1230mm). Contributes to the longevity of bridges and reduces lifecycle costs.

The Hybrid Joint 3LIIA type has a vertical integrated structure for the load support and anchor plate sections, making it highly durable and preventing damage from metal fatigue. A fatigue loading test conducted using actual products by a third-party organization confirmed a service life of 100 years, demonstrating durability for 100 years. This 100-year durability aligns with the design service life of bridges. Unlike conventional products that require replacement of expansion devices 3 to 4 times, this product can be used without any replacements, significantly reducing lifecycle costs. By using steel plates vertically, the exposed parts are minimized, resulting in very low impact during operation, and making it less likely to generate noise and vibration. It is a product capable of accommodating large expansion and wide spans, and it is one of the largest products in the category of rubber-based joints (a general term for products other than finger joints and embedded joints). The main differences from the NEXCO specification 3LII type are that the secondary waterproofing material is not standard equipment (but can be installed separately) and that the painting specifications differ. The durability and the waterproof structure of the main body are equivalent to the NEXCO specifications.

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  • Foundation construction
  • Dam construction
  • Expansion device

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Expansion Device 【Hybrid Joint】 Construction Example Osaka Prefecture

Expansion Device 【Hybrid Joint】 Construction Example Osaka Prefecture

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

Crittec Industries Co., Ltd. not only sells products but often takes 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】 ○ Construction Location: Osaka Prefecture ○ Bridge Name: Dainichi Elevated Bridge ○ Product: CF-80 and others ○ Comment: This is the installation of the NEXCO specification CF-80 type. One of its features is that it has a larger applicable gap compared to products from other manufacturers. For more details, please contact us or request a catalog.

  • Bridge Materials
  • Expansion device

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Expansion Device Hybrid Joint [Construction Example, Iwate Prefecture]

Expansion Device Hybrid Joint [Construction Example, Iwate Prefecture]

We would like to introduce a case study of the hybrid joint (CF 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 the issues that arise during installation and the condition of the removed existing expansion devices. 【Construction Examples】 ○ Construction Location: Iwate Prefecture ○ Bridge Name: Kamishibukawa Bridge ○ Products: CF-80 and others ○ Comments: This is the installation of the NEXCO specification CF-30 type. We adopted a product with a guide plate type as a countermeasure against graders. 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, Kyoto Prefecture]

Expansion Device Hybrid Joint [Construction Example, Kyoto Prefecture]

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

Crittec Industries 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 Example】 ○ Location: Kyoto Prefecture ○ Bridge Name: Asahi Elevated Bridge ○ Product: CF-80 and others ○ Comment: This is the installation of the NEXCO specification CF-80 type. The work was carried out with a complete road closure during concentrated construction. Measures were taken, such as preparing a tent, due to the forecast of rain. For more details, please contact us or request a catalog.

  • Joints between components
  • Expansion device

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Bridge Expansion Device Hybrid Joint <Free Materials Available>

Bridge Expansion Device Hybrid Joint <Free Materials Available>

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

The "Hybrid Joint" is a high-performance waterproof structure for bridge expansion devices, made by press vulcanizing and bonding rubber and steel. Due to its small surface exposure, it reduces impact during vehicle passage and prevents slipping even in rain or snow. The vertical structure of the load-bearing support prevents damage from metal fatigue, achieving a long-term durability of 50 years and maintenance-free operation. 【Features】 ■ Compatible with various types of bridges, including steel bridges, PC bridges, RC bridges, cable-stayed bridges, and curved bridges. ■ Can be installed with a 4-ton crane truck, allowing for safe and easy construction in a short time. ■ Can be replaced in short lengths for each lane. ■ Widely adopted by public organizations across the country, including the Ministry of Land, Infrastructure, Transport and Tourism, NEXCO, urban expressways, and local governments. *Currently, we are offering a product catalog for download. Please take a look.

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  • Bridge Materials
  • Expansion device

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Examples of Installation of Expansion Devices | Keiji Bypass / Keihan Overpass [Crittec Industries]

Examples of Installation of Expansion Devices | Keiji Bypass / Keihan Overpass [Crittec Industries]

Continuous adoption on Meishin Expressway and Keiji Bypass. A large expansion joint with a proven durability of 100 years【Hybrid Joint Type 3LII】.

We would like to introduce a case study of the hybrid joint (3LII type) for bridge expansion devices, which excels in water resistance and durability. 【Case Study 1】 - Location: Kyoto Prefecture (Keiji Bypass, Keihan Overpass) - Client: Kyoto Expressway Office - Project Name: FY 2023 Replacement Work for Expansion Devices within the Jurisdiction of Kyoto Expressway Office - Construction Period: September 2024 - Product: Hybrid Joint 3LII-350 【Case Study 2】 - Location: Kyoto Prefecture (Keiji Bypass, Keihan Overpass) - Client: Kyoto Expressway Office - Project Name: FY 2023 Replacement Work for Expansion Devices within the Jurisdiction of Kyoto Expressway Office - Construction Period: November 2025 - Products: Hybrid Joint 3LII-150, 3LII-160 - Comment: The high evaluation of the construction results in 2024 led to continued adoption for the following year's project. The replacement with product joints has achieved water resistance, durability, and low noise. The standard specifications of non-drainage structure and secondary water stop materials have significantly reduced the risk of leakage under the girders. For more details, please contact us or request a catalog.

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  • Bridge Construction
  • Road construction
  • Expansion device

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Cast iron expansion joint "Hinodakutairu Joint α (CCV type)"

Cast iron expansion joint "Hinodakutairu Joint α (CCV type)"

Durability unique to casting and a textured structure created by integrated molding maintain slip resistance for a long time! 【NETIS registered product】 Concrete construction series

The "Hinodakutairu Joint α (CCV Type)" is a cast iron expansion device optimized with ductile cast iron that possesses strength and elongation, featuring a welded-free integrated casting structure that excels in fatigue durability for bridge applications. It applies a slip-resistant pattern developed for manhole covers. The unique uneven structure created by casting, arranged on the fingers, allows for long-term maintenance of slip resistance. Additionally, it employs a waterproof structure confirmed to have a water-tightness equivalent to 30 years through the NEXCO waterproof test, with options for secondary waterproofing and ground cover waterproofing available. 【Features】 ■ Welded-free ductile cast iron integrated structure ■ Application of slip-resistant pattern developed for manhole covers ■ Low noise design ■ Protection of waterproof materials with load support plates and dust-proof materials ■ High water-tightness at connection surfaces ■ Water-tightness equivalent to 30 years in NEXCO waterproof test ■ NETIS registered product (QS-210051-A: Space-saving installation compatible expansion device) *For more details, please refer to the PDF document or feel free to contact us.

  • Bridge Construction
  • Expansion device

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Bridge expansion device "N-FC Finger Joint"

Bridge expansion device "N-FC Finger Joint"

A structure designed with consideration for workability during regular inspections from below the bridge and when replacing water-stopping materials after it has been put into service!

The "N-FC Finger Joint" is a bridge expansion device that protects the water-stopping material, which is essential for non-drainage functionality, and prevents early deterioration of bridge girder ends in snowy and cold regions. By adding a fin cover to the underside of the face plate and narrowing the gaps of the comb teeth, the proportion of soil, snow, and ice that enters the gaps and reaches the water-stopping material can be reduced to below 15% even at the lowest temperatures (-20°C), thereby preventing the deterioration of the water-stopping material. Additionally, by using water-stopping materials that have passed tests based on NEXCO's construction management guidelines for structures, water-stopping performance is ensured. 【Features】 ■ Added fin cover to the underside of the face plate to narrow the gaps of the comb teeth ■ Resists constant wheel loads with only the face plate ■ Confirmed fatigue durability of over 50 years through fatigue tests using full-scale specimens ■ Utilizes water-stopping materials that have passed tests based on NEXCO's construction management guidelines for structures ■ Dry water-stopping materials, support brackets, and water-stopping rubber are designed to be detachable from below the girder *For more details, please refer to the PDF document or feel free to contact us.

  • Bridge Materials
  • Bridge Construction
  • Expansion device

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The "Hybrid Joint," a flexible device that has proven long-term durability and high water resistance.

The "Hybrid Joint," a flexible device that has proven long-term durability and high water resistance.

Proven durability of 50 or 100 years through fatigue load testing!

The Hybrid Joint NS-LL type and 3LIIA type have been tested under the fatigue durability test specified by NEXCO, confirming a durability of 50 years after 6 million load cycles. Furthermore, the 3LIIA type will undergo another fatigue loading test in November 2024. After 12 million load cycles, a durability of 100 years has been confirmed! This proves its ultra-long-term durability. Traditionally, expansion joints are often required to have a durability of around 30 years, but bridges are expected to last 100 years, so it is undeniable that expansion joints can shorten the lifespan of bridges. Our product, the Hybrid Joint, contributes to extending the lifespan of the expansion joint itself, thereby reducing lifecycle costs and promoting the longevity of bridges. We offer a wide range of products from small to large, accommodating expansion amounts from 20mm to 600mm. 【NS-LL Type Features】 ○ 50 years of durability and water-tightness ○ Ultra-low noise and low vibration ○ Steel vertical shape 【3LIIA Type Features】 ○ 100 years of durability ○ 50 years of water-tightness ○ Large expansion amount and wide gap For more details, please contact us or request a catalog.

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  • Foundation construction
  • Expansion device

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Expansion device "Metal Garg Joint NL-FL type"

Expansion device "Metal Garg Joint NL-FL type"

Durability backed by years of experience! By using soundproofing materials, noise is reduced effectively.

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.

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  • Bridge Materials
  • Expansion device

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Expansion Device 【Hybrid Joint】 Construction Example Shizuoka Prefecture

Expansion Device 【Hybrid Joint】 Construction Example Shizuoka Prefecture

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

Critic Co., Ltd. not only sells products but often takes 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 existing expansion devices that are removed. 【Construction Case】 ○ Location: Shizuoka Prefecture ○ Bridge Name: Mabushigawa Bridge ○ Product: CF-80 and others ○ Comment: This was a replacement work for expansion devices during the slab thickening construction. We paid particular attention to the scattering of sparks during welding.

  • Bridge Materials
  • Expansion device

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Expansion device "Hybrid Joint CF Type (with guide plate)"

Expansion device "Hybrid Joint CF 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 CF type features a tooth-shaped design that smoothly transmits the movement of wheel loads on its surface, and its structure is designed to minimize noise and vibration by absorbing shocks from unevenness. The water-stopping structure, made of elastic sealing material and rubber, offers high water resistance, and since standard products are assembled and delivered at the factory for installation, the likelihood of water leakage from connection points is low. 【Features】 ○ High water resistance ○ Low noise for comfortable driving ○ Complies with NEXCO standards For more details, please contact us or request a catalog.

  • Joints between components
  • Expansion device

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[Column] What is a Hybrid Joint? Introducing 7 Features and Product Examples

[Column] What is a Hybrid Joint? Introducing 7 Features and Product Examples

Introducing features and product examples with photos! Please use this as a reference when choosing a telescopic device.

The hybrid joint is an expansion device manufactured by our company. Expansion devices vary in performance and flexibility depending on their type, so it is necessary to choose one based on the bridge or road where it will be installed. However, the hybrid joint can be used in any location and has high durability, allowing for long-term use. In this article, we will introduce the features of the hybrid joint and provide examples of the product with accompanying photos. Please use this as a reference when selecting an expansion device. *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.

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  • Manufacturing Equipment
  • Expansion device

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Bridge expansion device "Hybrid Joint TCF Type"

Bridge expansion device "Hybrid Joint TCF Type"

Safe bridges in snow-covered areas. Compliant with the specifications set by the Tohoku Regional Development Bureau of the Ministry of Land, Infrastructure, Transport and Tourism.

The "Hybrid Joint TCF Type" is an expansion device for bridges designed for the Tohoku region, capable of withstanding "snow load." It meets the 10kN snow load requirement set by the Tohoku Regional Development Bureau. Additionally, it adopts a structure known as the "face plate type," which prevents the water-stopping material from being exposed on the surface, and comes standard with "secondary water-stopping material." By utilizing a double structure, it reduces the risk of leakage and achieves higher water-stopping performance. Furthermore, to prevent snowplow blades from getting caught in the expansion device, it is also equipped with a "snow removal guide plate" as standard. This not only protects the product itself but also considers safety during snow removal operations. 【Features】 ■ An expansion device for bridges that is compatible with "snow load" and has excellent water-stopping performance. ■ A durability of 50 years, reducing life cycle costs. ■ Contributing to social infrastructure with a comprehensive product lineup. *For more details, please refer to the related links or feel free to contact us.

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  • Bridge Construction
  • Expansion device

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Expansion Device 【Hybrid Joint】 Construction Example Yamagata Prefecture

Expansion Device 【Hybrid Joint】 Construction Example Yamagata Prefecture

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

Crittec Industries Co., Ltd. not only sells products but often takes 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 joints. 【Construction Case】 ○ Location: Yamagata Prefecture ○ Bridge Name: Haguro Bridge ○ Product: L-70 and others ○ Comment: Since this is a snow-covered area, we covered the joint with a blue tarp for curing in preparation for concrete pouring the next day. For more details, please contact us or request a catalog.

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  • Joints between components
  • Expansion device

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Expansion Device Hybrid Joint [Construction Example, Ibaraki Prefecture]

Expansion Device Hybrid Joint [Construction Example, Ibaraki Prefecture]

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

Crittec Industries 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 Example】 - Construction Location: Ibaraki Prefecture - Bridge Name: Fujimi Bridge - Product: L-60 and others - Comment: We also made calls for the safety of nearby residents and pedestrians. 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, Miyazaki Prefecture]

Expansion Device Hybrid Joint [Construction Example, Miyazaki Prefecture]

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

Crittec Industrial 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 are removed. 【Construction Example】 - Location: Miyazaki Prefecture - Bridge Name: Yamazumi Koyagawa Bridge - Product: LL-125 - Comment: This is a new construction project. Care was taken to ensure that the surface coloring material was applied evenly. 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 Aomori Prefecture

Expansion Device 【Hybrid Joint】 Construction Example Aomori Prefecture

We would like to introduce a case study of the hybrid joint (3L type), a bridge expansion device that 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 the issues that arise during installation and the condition of the removed existing expansion devices. 【Construction Example】 ○ Location: Aomori Prefecture ○ Bridge Name: Nozomi Bridge ○ Product: 3L-250 ○ Comment: Since vehicles could not access the bridge, we performed the installation by lifting it with a crane from underneath the bridge. For more details, please contact us or request a catalog.

  • Bridge Materials
  • Expansion device

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Expansion Device 【Hybrid Joint】 Construction Example Gunma Prefecture

Expansion Device 【Hybrid Joint】 Construction Example Gunma Prefecture

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

Critic Industrial Co., Ltd. not only sells products but often takes 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: Gunma Prefecture ○ Bridge Name: Sawarimori Bridge ○ Product: S-30 and others ○ Comments: Due to the narrow width, we conducted the work with a road closure. Additionally, we performed repairs as the concrete in the foundation area was deteriorated. For more details, please contact us or request a catalog.

  • Bridge Materials
  • Expansion device

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Expansion Device Hybrid Joint [Construction Example Saitama Prefecture]

Expansion Device Hybrid Joint [Construction Example Saitama Prefecture]

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

Critic Industrial 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: Saitama Prefecture ○ Bridge Name: Nail-less Bridge Mounted Elevated Bridge ○ Product: S-50 and others ○ Comment: The noise issue of the existing expansion device was the reason for the replacement, so we paid special attention to the height and quality during installation. 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, Chiba Prefecture]

Expansion Device Hybrid Joint [Construction Example, Chiba 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 Industrial Co., Ltd. not only sells products but often takes 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: Chiba Prefecture ○ Bridge Name: Heisei Bridge ○ Products: NS-20 and others ○ Comments: Due to the bridge's proximity to the coast, we conducted the work while confirming the corrosion of rebar and the deterioration of concrete caused by salt damage. 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, Yamanashi Prefecture]

Expansion Device Hybrid Joint [Construction Example, Yamanashi 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 often takes 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: Yamanashi Prefecture ○ Bridge Name: Yamatani Bridge ○ Product: NS-20 and others ○ Comment: The site was in a peaceful mountainous area with almost no passing vehicles, allowing for safe execution. 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 Tochigi Prefecture]

Expansion Device Hybrid Joint [Construction Example Tochigi Prefecture]

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

Crittec Industries Co., Ltd. not only sells products but often takes 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 joints. 【Construction Example】 - Location: Tochigi Prefecture - Bridge Name: Koinuma Bridge - Product: NS-20 - Comment: Since the existing joint was of the slide type, we conducted thorough protection under the girder. For more details, please contact us or request a catalog.

  • Joints between components
  • Expansion device

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Expandable device "Hybrid Joint 3LIIA type"

Expandable device "Hybrid Joint 3LIIA type"

Large expansion range (200–600mm) and wide play space (up to 1230mm) compatible. Bridge expansion device that is environmentally friendly for bridge surroundings [NETIS registered product].

The Hybrid Joint 3LIIA type has a vertical integrated structure for the load support section and the anchor plate section, making it highly durable, with almost no damage from metal fatigue. By using steel plates vertically, the exposed parts are minimized, resulting in very low impact during operation, and the product is less likely to generate noise and vibration. It is capable of accommodating large expansion and contraction (200–600mm) and wide spacing (up to 1230mm). 【Features】 ○ Supports large expansion and contraction and wide spacing ○ High watertightness due to double waterproof structure ○ Long-term durability and maintenance-free For more details, please contact us or request a catalog.

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  • RIMG0148.JPG
  • Foundation construction
  • Dam construction
  • Expansion device

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Expandable device "Hybrid Joint 3LIIA type (with guide plate)"

Expandable device "Hybrid Joint 3LIIA type (with guide plate)"

By shaping the steel plate into a guide plate type, it prevents damage to the main body of the grader due to expansion and contraction in snowy areas.

The Hybrid Joint 3LIIA type has a vertical integrated structure for the load support and anchor plate sections, making it highly durable with almost no damage from metal fatigue. By using steel plates vertically, the exposed areas are minimized, resulting in very low impact during operation and making the product less prone to noise and vibration. It is capable of accommodating large expansion and contraction (200–600mm) and wide gaps (up to 1230mm). 【Features】 ○ Supports large expansion and contraction and wide gaps ○ High watertightness due to double sealing structure ○ Long-term durability and maintenance-free For more details, please contact us or request a catalog.

  • RIMG0148.JPG
  • Joints between components
  • Expansion device

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