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

Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
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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

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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

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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

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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

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Expandable device "Hybrid Joint 3LIIA Type"

Expandable device "Hybrid Joint 3LIIA Type"

[NETIS Registered Product] Supports large expansion and contraction (200–600mm) and wide spacing (up to 1230mm). Expansion device for bridges designed with consideration for the surrounding environment.

The Hybrid Joint 3LIIA type, like the conventional Hybrid Joint 3L type, has a vertical integrated structure for the load support and anchor plate sections, resulting in high durability with almost no damage from metal fatigue. By using steel plates vertically, the exposed parts are minimized, leading to 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), making it 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 water stop material is not standard equipment (but can be installed separately) and that the painting specifications differ. The durability and water stop structure of the main body are equivalent to the NEXCO specifications. 【Features】 ○ Accommodates large expansion and contraction and wide gaps ○ High water stop performance due to the zipper 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

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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 characteristics is that it has a larger applicable gap compared to products from other manufacturers. For more details, please contact us or request a catalog.

  • Joints between components

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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

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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

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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

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"Hybrid Joint" expansion device confirmed for 50 years of durability.

"Hybrid Joint" expansion device confirmed for 50 years of durability.

Confirmed durability of 50 years through fatigue endurance testing!

The Hybrid Joint NS-LL type and 3LIIA type have been confirmed to have a durability of 50 years after undergoing a loading test of 6 million cycles as specified by NEXCO's fatigue durability test. Traditionally, expansion devices are often required to have a durability of about 30 years, but since bridges are expected to last 100 years, it is undeniable that expansion devices can shorten the lifespan of bridges. Our product, the Hybrid Joint, contributes to extending the lifespan of the expansion device 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. 【Features】 ○ 50 years of durability ○ High water-tightness ○ Steel vertical shape ~~ We are 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.

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  • Foundation construction

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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

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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

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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

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Expansion Device Hybrid Joint [Construction Example Shizuoka Prefecture]

Expansion Device Hybrid Joint [Construction Example Shizuoka Prefecture]

We will 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, striving to improve products by considering issues that arise during installation and the condition of damaged existing expansion devices that are removed. 【Construction Example】 ○ Location: Shizuoka Prefecture ○ Bridge Name: Mabushigawa Bridge ○ Product: CF-80 and others ○ Comment: This was a replacement work for expansion devices during the floor slab thickening construction. Special attention was paid to the scattering of sparks during welding.

  • Bridge Materials

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