Shell Type Roller Gate
Dam Gate
River Gate
Penstock & Aqueducts
- Crest Roller Gate
- Crest Radial Gate
- Crest Flap Gate
- High Pressure Roller Gate
- High Pressure Radial Gate
- High Pressure Slide Gate
- Tensile Radial Gate
- Jet-flow Gate
- Circular Multi-stage Gate
- Linear Multi-stage Gate
- Semi-circular Multi-stage Gate
- Linear Multi-gate
- Perforated Gate
- Siphon Type
- Multi-stage Float Membrane Gate
- Temporary Coffering
Ishikarigawa Head Work

Client | Hokkaido Regional Development Bureau |
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Equipment | Head Work |
Size | W42.0m * H4.62m |
Completed in | 2012 |
Location | Hokkaido Prefecture, Japan |
Kawakami Head Work

Client | Kyusyu Regional Agricultural Administration Office |
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Equipment | Head Work |
Size | W37.0m * H2.2m W12.0m * H2.4m (with Flap Gate) |
Completed in | 2006 |
Location | Saga Prefecture, Japan |
Jukkaza Gate

Client | Nigata Prefecture |
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Equipment | Head Work |
Size | W27.2m * H2.55m (with Flap Gate) W27.2m * H2.65m |
Completed in | 1999 |
Location | Nigata Prefecture, Japan |
Shell structure roller gates for agricultural water intake. One of three gates has a flap gate on the gate to regulate flow rate.
Naruka Great Weir


Client | Kinki Regional Bureau |
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Equipment | Weir |
Size | W43.35m * H5.7m (with Flap Gate) W16.85m * H5.7m (with Flap Gate) |
Completed in | 1996 |
Location | Fukui Prefecture, Japan |
Environment-friendly view by deleting horizontal extensions from piers.