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.
basic information
【Features】 ○ Compatible with small bridges to long bridges ○ Can accommodate all types of bridges ○ Ultra-low noise and comfortable driving ○ Long-lasting durability and maintenance-free ○ High water resistance ○ Safe and easy installation ○ Replaceable ○ Economical ● For more details, please contact us or request a catalog.
Price range
Delivery Time
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 | Extension amount 20mm (±10mm) |
| S-30 | Extension amount 30mm (±15mm) |
| S-40 | Extension amount 40mm (±20mm) |
| S-50 | Extension amount 50mm (±25mm) |
| L-60 | Extension amount 60mm (±30mm) |
| L-70 | Extension amount 70mm (±35mm) |
| L-80 | Extension amount 80mm (±40mm) |
| L-90 | Extension amount 90mm (±45mm) |
| L-100 | Extension amount 100mm (±50mm) |
| LL-125 | Extension amount 125mm (±62.5mm) |
| LL-150 | Extension amount 150mm (±75mm) |
| LL-175 | Extension amount 175mm (±87.5mm) |
catalog（3）
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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.
