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

Expansion device Product List

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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

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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.

  • 画像２.JPG
  • Foundation construction
  • Dam 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.

  • メタルガージョイントNL-FL型_02.jpg
  • Bridge Materials

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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

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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 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 joints that are removed. 【Construction Case】 - Location: Yamagata Prefecture - Bridge Name: Haguro Bridge - Product: L-70 and others - Comment: Since it is an area with heavy snowfall, 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.

  • RIMG0620.JPG
  • Joints between components

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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.

  • 画像２.JPG
  • RIMG0148.JPG
  • Foundation construction
  • Dam construction

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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

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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

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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

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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

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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

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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

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