The low-profile telescopic device "TS type" has arrived.

At Crittec Industries, we have developed a low-profile expansion device called the "TS type," with a product height of 75mm, and have begun manufacturing and sales.
Given that our product delivery record started with highways, we believed that enhancing the durability of the product was a market need and have been advancing our development accordingly. While this is certainly not incorrect, it is undeniable that this led to somewhat over-specification in product development.
For bridges that see a few light trucks passing daily, what is required is cost-effectiveness and compactness of the product rather than durability equivalent to that of highways. Particularly in older bridges, the thickness of the deck is thin, and existing products were too large to fit.
Therefore, we have developed the compact TS type product. With a product height of 75mm, it often fits within the thickness of the pavement.
In December 2024, we first installed the TS type at the Senami Bridge (Nishitama-gun, Tokyo). Due to the shallow notch depth, the installation was completed in a shorter time compared to conventional products.
If you are looking for a low-profile product, please consider us!


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The product has a low height and is a telescopic device with a height of 75mm. In many cases, it fits within the thickness of the pavement.