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  1. Home
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  3. Civil Engineering Materials
  4. Road, bridge and tunnel materials
  5. Gutters and U-shaped gutters
  6. Concrete products: drop structures, slope boxes / orifice boxes, flow regulation boxes

Concrete products: drop structures, slope boxes / orifice boxes, flow regulation boxes

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last updated:Feb 10, 2026

フジコン
フジコン
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No waste materials, no environmental pollution! Achieving clean construction with unique technology.

Our company manufactures concrete products such as custom drop structures and gradient structures (for field improvement projects) tailored to the site environment, as well as orifice structures and flow control structures (for rainwater, etc.). Being precast allows for quick site restoration, shortening construction periods and reducing running costs. We have numerous installation records in agricultural roads, sidewalks, roadways, premises, and planting areas. If you have drawings or rough plans, we can consider precasting and provide estimates, so please feel free to contact us when needed. 【Features】 ■ Challenge to "Zero On-Site Casting" - With side pipes, multi-stage drops, and angled connections, we can form and deliver even the most complex shapes exactly as per the drawings. ■ Reduce construction time from "several weeks" to "several hours" - Cut down on downtime waiting for curing; backfill on the same day of installation and proceed to the next phase. ■ Improved water tightness - The precise concrete produced in the factory and accurate openings reduce the risk of water leakage from joints, which is a concern with on-site casting. *For more details, please download the PDF or feel free to contact us.

    Gutters and U-shaped guttersConcrete Retaining Wall
IPROS678654685625351045.jpg

Concrete products: drop structures, slope boxes / orifice boxes, flow regulation boxes

IPROS678654685625351045.jpg
IPROS678654685625351045.jpg IPROS2498230830527312196.jpg IPROS6636483188353456668.jpg IPROS12630739133926342463.jpg IPROS6074759895887782217.jpg IPROS3932646610906122463.jpg IPROS19610465458782212491.jpg IPROS98982288187651767611.jpg IPROS86149649733343154159.jpg IPROS19360203457582132071.jpg
  • Related Link - https://www.fuji-kon.co.jp/
  • Special site - Product/service details - https://pr.www.ipros.com/fuji-kon/product/

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【Other Features】 ■ Can be delivered as a single unit or in a split type according to the drawings ■ Custom sizes and special specifications can be manufactured from just one unit *For more details, please download the PDF or feel free to contact us.

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【Installation Achievements】 ■ Agricultural roads, sidewalks, roadways, premises, and planting areas, etc. *For more details, please download the PDF or feel free to contact us.

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Why not solve complex sumps entirely with "precast"?

Why not solve complex sumps entirely with "precast"?

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フジコン

フジコン

Building materials, supplies and fixtures manufacturers

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Fujikon Co., Ltd. is engaged in the design, manufacturing, and sales of concrete secondary products, as well as surveying, research, and development support. We handle products such as handholes, sewage and rainwater manholes, catch basins, environmental and greening products, and solar foundations, so please feel free to contact us if you have any requests.

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