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.
basic information
【Features】 ○ Compatible with small bridges to long-span bridges ○ Usable for all types of bridges ○ Ultra-low noise and comfortable driving ○ Long-term durability of 50 years and maintenance-free ○ High water resistance for 50 years ○ Safe and easy installation ○ Replaceable ○ Economical ○ Certified product that passed water resistance and durability tests for metropolitan expressway specifications ● For more details, please contact us or request a catalog.
Price range
Delivery Time
Model number/Brand name
NS type, S type, L type, LL type
Applications/Examples of results
We have been adopted nationwide, primarily by the Ministry of Land, Infrastructure, Transport and Tourism, NEXCO, urban expressways, local governments, and other public organizations.
Line up（12）
| Model number | overview |
|---|---|
| NS-20 | Expansion amount 20mm (±10mm) |
| S-30 | Expansion amount 30mm (±15mm) |
| S-40 | Expansion amount 40mm (±20mm) |
| S-50 | Expansion amount 50mm (±25mm) |
| L-60 | Expansion and contraction amount 60mm (±30mm) |
| L-70 | Expansion amount 70mm (±35mm) |
| L-80 | Expansion amount 80mm (±40mm) |
| L-90 | Expansion amount 90mm (±45mm) |
| L-100 | Expansion amount 100mm (±50mm) |
| LL-125 | Expansion amount 125mm (±62.5mm) |
| LL-150 | Expansion amount 150mm (±75mm) |
| LL-175 | Expansion amount 175mm (±87.5mm) |
catalog（6）
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Distributors
CRETEC, a company under Crittec Industries, was born from the combination of Create (creation) and Technology. As a comprehensive manufacturer of bridge expansion devices, we continue to develop expansion devices that contribute to the longevity of bridges and environmental protection. Moreover, we do not stop at product manufacturing; by consistently handling everything from research, design, manufacturing, sales, to construction in-house, we can manufacture and install expansion devices that meet the requests of our clients and general contractors, as well as the conditions and environments of the bridges and roads on-site. We also take into account the issues that arise during the installation of expansion devices and the damage conditions of existing devices that are removed, using this information to improve and develop our products. Please feel free to contact us for inquiries about bridge expansion devices, requests for materials, or estimates. ◆ What is a bridge expansion device? It is a component installed in the gap between the bridge abutment and the bridge girder, or between bridge girders. When designing a bridge, it is necessary to create a gap to prevent the bridge girders from colliding due to expansion and contraction caused by temperature changes. The bridge expansion device is required to cover this gap and ensure safe passage for vehicles and pedestrians.
