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

Last Updated： Aggregation Period:Sep 30, 2026～Oct 27, 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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  • CFタイプ　550-550　CF施工　02.jpg
  • 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.

  • メタルガージョイント NLd-FLN型_02.jpg
  • メタルガージョイント NLd-FLN型_03.jpg
  • 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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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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  • イプロス　3LII伸縮量の比較グラフ　260519.jpg
  • 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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  • イプロス画像_耐久性50年と100年_260326_アートボード 余戸南 3L?A.jpg
  • 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 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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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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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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  • 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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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"

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] 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.

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  • 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

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  • 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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