Spelter sockets used in dams

Japan is blessed with mountains and water, with two-thirds of its land area covered by mountains and forests.
For this reason, many dams have been built to manage and use water resources.

There are more than 2,000 dams in Japan, not only for regulating water flow but also for hydroelectric power generation.
In addition, 7 to 8% of Japan’s electricity is generated by hydroelectric power.

Spelter sockets are used to open and close dam doors with wire rope winches to regulate the water in such dams.

For this reason, we deliver many spelter sockets every year as wire ropes are re-hung, etc.

Because they are used in water, they are hot-dip galvanized or made of stainless steel.



Although never visible to the general public, they support Japan’s water resources.