Our power transmission line businesses focus on overhead power lines, which are the main arteries of electricity, and train overhead line equipment that connects cities and people. Leveraging the experience and technology accumulated over more than 100 years, we provide safe, high-quality construction.
Our history began with overhead power line construction. Since our founding, we have participated in the construction of major power transmission lines across the country, and the length of lines we have laid to date is enough to circle the earth twice. We also undertake electrical wiring replacement work and large steel tower reconstruction work to ensure a stable supply of electricity and support facility updates.
We have been undertaking for overhead line construction work in the Tokyo area (including the Oi Depot) of the Tokaido Shinkansen since its opening. In addition to electrical equipment for train overhead lines and train station buildings, we also install lighting and communication base station equipment for expressways, tunnels, airports, etc.
| Product name | Specifications | Quantity |
|---|---|---|
| Jib crane | 36t-m class | 11 |
| 21t-m class | 3 | |
| Climbing crane | 36t-m class | 4 |
| 20t-m class | 1 | |
| 10t-m class | 1 | |
| Crab crane | 2.98 t hoist | 2 |
| Electric mini backhoe | TM20-2 | 2 |
| Tensioner truck | φ1.5m, electric winding type | 12 |
| φ1.2m, electric winding type | 22 | |
| φ1.0m, electric winding type | 10 | |
| Overhead line winch | Hydraulic 5 t winding (crawler type) | 6 |
| Hydraulic 3 t winding (crawler type) | 7 | |
| Tensioning winch | Hydraulic 3 t winding (crawler type) | 6 |
| Hydraulic 2.5 t winding (crawler type) | 60 | |
| Hydraulic 2.0 t winding (crawler type) | 25 | |
| Hydraulic 1.5 t winding (crawler type) | 2 | |
| Hydraulic 1.0 t winding (crawler type) | 2 | |
| Drum stand | Electric hydraulic winding type | 13 |
| Hydraulic compressor | For 100 t and 200 t | 14 |
| Reel winder | Engine type | 41 |
| Motor type | 16 | |
| Stringing block | φ1000, urethane | 3 |
| φ800, urethane | 21 | |
| φ600 × 106, urethane | 435 | |
| φ450 × 106, urethane | 245 | |
| Hoisting stringing block | 2 blocks, top and bottom | 1,616 |
| 2 large blocks, top and bottom | 500 | |
| 3 block type | 245 | |
| Crawler stringing block | SB530 type | 4 |
| B-129 type | 62 | |
| AC81-C086 | 10 | |
| AC41-GK096 | 12 | |
| Tensioning stringing block | φ90 × 1 block · 2 blocks | 1,084 |
| φ120 × 1 block · 2 blocks | 1,228 | |
| Aerial trolley | 6-conductor | 1 |
| 4-conductor | 47 | |
| 2-conductor and single-conductor | 200 | |
| Steel tower | For foothold, H=50m | 2 |
| Steel pole | For foothold, L75 | 200 segments |
| Key lock rope | Various |
We have four supply centers across the country, enabling us to respond quickly.
We also rent out supplies and equipment.
For inquiries, please contact the Transmission Line Construction Department (+81-3-3518-2351)
