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  3. クリテック工業 本社、大阪営業所、福岡営業所
  4. <Media Information> An article titled "Proving 100 Years of Durability" has been published in Bridge Communication.
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  • Mar 13, 2025
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Mar 13, 2025

<Media Information> An article titled "Proving 100 Years of Durability" has been published in Bridge Communication.

クリテック工業 クリテック工業 本社、大阪営業所、福岡営業所
The article "Proving 100 Years of Durability" was published in the March 1, 2025 issue of "Bridge Communication." *The full article is available in the related PDF document. Please download and read it. We encourage you to take a look!* <Excerpt from the article> Crittec Industries announced that its main product, the expansion joint "Hybrid Joint 3LII-500," has been proven to have a durability of 100 years through fatigue loading tests conducted by a third-party organization. The 3LII type meets NEXCO specifications. The load support plate and anchor plate are designed as a vertical integrated structure, providing high durability and preventing damage from metal fatigue. In October to November 2024, using a fatigue testing machine at the Construction Machinery Construction Association's Comprehensive Research Institute, a third-party organization, it cleared a maximum loading weight of 260 kN for 12 million cycles. This is based on the assumption that a 25-ton large vehicle ran over the 3LII-500 for 12 million times, equivalent to a 100-year durability. According to the "Road Bridge Design Guidelines," the standard design service life for bridges is 100 years. For newly constructed bridges, there is no need to replace the expansion joints for 100 years. The 3LII type is maintenance-free, eliminating the need for traffic restrictions for sound inspections, thereby reducing maintenance costs and improving safety.
Please refer to the PDF of the related materials for the full article.
Please refer to the PDF of the related materials for the full article.
Product advertisement published along with the article.
Product advertisement published along with the article.
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橋梁通信 2025年3月1日号 記事全文.pdf[3182013]

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Crittec Industries Website
Expansion Device Product Information
Crittec Industrial Website
An article titled "Proving 100-Year Durability through Fatigue Testing" published in the Bridge News.
Kritech Industries YouTube
A video of a fatigue load test proving a durability of 100 years has been released.

Related product

橋梁新聞_250101号_クリテック工業_広告_ol_イプロス用_1000-1000.jpg

Durability 100 years, expansion device, hybrid joint, type 3LII.

A bridge expansion device proven to last 100 years! No replacement needed for new bridges for 100 years! Long-term water-tightness, maintenance-free [NEXCO specification compliant product].

The Hybrid Joint 3LII type has a vertical integrated structure of the load support plate and anchor plate, making it highly durable and preventing damage from metal fatigue. Its durability is equivalent to an ultra-long term of 100 years! It has been proven through fatigue loading tests conducted by a third-party organization, clearing the equivalent of 12 million cycles, which corresponds to 100 years. This assumes that a 25-ton large vehicle has traveled over the 3LII type 12 million times, equating to a 100-year durability. The standard design supply period for bridges is 100 years. For newly constructed bridges, there is no need to replace the expansion device for 100 years. The 3LII type is maintenance-free, eliminating the need for sound inspection that requires traffic regulation, leading to reduced maintenance costs and improved safety. It is a product capable of accommodating large expansion ranges (150-350mm) and wide gaps (up to 730mm), making it one of the largest among expansion devices that have passed NEXCO standards. It has been widely adopted on highways nationwide as a product that meets NEXCO specifications. For more details, please contact us or request a catalog.

  • Bridge Materials
  • Foundation construction

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RIMG0167.JPG

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.

  • Joints between components

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Related catalog(2)

Crittec Industrial NEXCO Specification Hybrid Joint Catalog

Crittec Industrial NEXCO Specification Hybrid Joint Catalog

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【Expansion Device】 Hybrid Joint Comprehensive Catalog

【Expansion Device】 Hybrid Joint Comprehensive Catalog

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Hotron Group Case Page

[Case Study] Hotron pursues sensor technology and creates products that generate safe and comfortable living spaces. We would like to introduce Hotron products that support people's lives throughout the city.

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We will introduce the implementation results of the sensor technology developed by the Hotron Group, which has been cultivated over more than half a century, through customer case studies. In addition to automatic door sensors, we also offer a wide range of vehicle detection sensors and nursing/care sensors. We have many implementation examples available, so please take a look at the case study page.

May 07, 2026

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Full and Empty Management (Medium to Large Scale)

Parking lot occupancy management vehicle detection sensor | Hotron Co., Ltd.

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Full and empty management refers to the real-time display of parking availability and the management of efficient use of parking spaces. By utilizing Hotron's sensors, drivers can quickly discover available parking spaces, achieving efficient parking lot operations. ■ For large parking lots, the "floor management method" and "block management method," which focus on cost reduction, are recommended. Sensors are installed at regular intervals to count the number of vehicles passing through. This method offers the advantage of easy installation and low costs. 【Target Products】 - Vehicle Count Sensor CCS2 - Ultrasonic Sensor HM-UX2/UW2 ■ For smaller scale operations, the "space management method," which installs sensors in each parking space to display availability with high accuracy, is recommended. By ensuring accurate full and empty displays, it helps prevent unnecessary entry of new vehicles and enables safe parking lot operations. 【Target Products】 - Occupancy Detection Sensor HM-UX2/UW2 - Occupancy/Pass Detection Sensor HM-LC6 - Occupancy Detection Sensor HM-LC7/LC7-FLS - Occupancy/Pass Detection Sensor HM-S6 - Occupancy Detection Sensor HM-S8

May 07, 2026

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Breaking News

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Breaking News At an international ceremony held in New York and hosted by The Wall Street Journal (WSJ), our CEO, Shibata, has received the “Next Era Fintech Platform Award.” ▼ Read the announcement https://kortvaluta.com/news/wsj-nextera-fintechplatformaward/ More updates, including highlights from the event, will be shared soon.

May 05, 2026

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Introducing "fragrance effects" at the timing of the renewal opening of a girls' bar in Kanagawa Prefecture!

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At a girls' bar in Kanagawa Prefecture that will be reopening in May, we are introducing "Majesta Fragrance" at this important timing to create a fragrant atmosphere in the store. The moment you step inside, a luxurious scent gently spreads, creating a special space that appeals not only to the visual senses but also to the sense of smell. Majesta Fragrance also offers free trial installations. You can consider the introduction after confirming the actual scent spread and customer reactions, so please feel free to contact us.

May 04, 2026

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A cabaret club in Kanagawa Prefecture with a fragrance experience!

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We have introduced the Majesta Fragrance commercial aroma diffuser rental service at a cabaret club in Kanagawa Prefecture. It suppresses the odors of tobacco and alcohol, creating a high-quality and memorable space through the power of fragrance. Scent branding can also serve as a "fragrance strategy that generates repeat customers." The "scent production," which differentiates you from other establishments, is currently available for a free trial installation. If you are interested in scent production for your store or office, please feel free to contact us.

May 04, 2026

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