For the safety of our lives! Manhole cover raising and replacement work should be done with a smart and efficient construction method!
At Hiyoshi, we undertake "manhole cover repair and replacement work." We inspect the condition of the manhole installation and investigate any issues. The results of the investigation will be summarized in an inspection report, and we will propose methods for replacement. Additionally, we use small-scale specialized equipment that allows us to work on a small circular area, ensuring easy operation, excellent workability, high efficiency, and cost-effectiveness. Since 2004, our company has achieved high construction results with our unique construction methods. 【Features】 ■ Rational and economical construction ■ Total service from traffic scheduling and document arrangements to same-day response ■ Safe and secure technology backed by our accumulated experience and know-how *For more details, please refer to the PDF materials or feel free to contact us.
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【Advantages of Construction】 ■ Fast: All processes within 2 hours ■ Quiet: Low noise due to manual work ■ Environmentally Friendly: Minimal dust, debris, and waste ■ Compact: Minimizes traffic regulation area *For more details, please refer to the PDF document or feel free to contact us.
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"Such manholes are a danger signal" ■ Step height ■ Surrounding pavement damage ■ Loose cover and frame ■ Wear on the cover ■ Damage to adjustment work ■ Overlay on the top of the cover *For more details, please refer to the PDF document or feel free to contact us.
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Company information
Hiyoshi Corporation provides comprehensive support for environmental business across a wide range of fields, from analysis and measurement to industrial chemicals, facility management, and environmental conservation. With a history spanning half a century and a solid technical foundation, we engage in various environmental-related operations, including environmental analysis, maintenance of environmental infrastructure, sales of industrial chemicals, waste collection and transportation, and road maintenance. Additionally, we create and offer new solutions as part of Hiyoshi's one-stop service. In the future, we are also considering a life innovation business that applies "bioassays" using organisms (such as genetically modified cells) developed by Hiyoshi to measure the environment. Furthermore, based on the belief that "environmental issues have no borders," we have been welcoming over 200 trainees from 20 countries and dispatching engineers for more than 20 years, focusing on human resource development to share Hiyoshi's expertise accumulated over more than 60 years with the world. Moving forward, we expect our activities to become more active in realizing business expansion based on our established achievements. Hiyoshi aspires to contribute to the international community with even greater efforts and innovation to ensure safety and security in global living.