Water Supply and Sewage Systems

We believe that it is important to ensure that the important resource “WATER” is passed on to the next generation. Water and sewage facilities, industrial water treatment facilities, and water treatment facilities at various factories are the basic infrastructure for people’s lives and industry. We promise to ensure the success of design, manufacturing, construction, maintenance, etc. of machinery, electrical equipment, plumbing, monitoring system.

Works for water treatment facility

Okinawa, Japan
Pre-treatment equipment installation work of Seawater desalination plant
Yamaguchi, Japan
Large piping system for Water purification plant
Tokyo, Japan
Flap gate valve installation work for Water reproduction center


We provide planning, installation work, and maintenance services related to the construction of mechanical equipment and electrical instrumentation systems for various water treatment plants such as water purification plants, sewage treatment plants, and pumping stations.

Manufacture of prefabricated piping

Prefabricated piping
Prefabricated piping
Protection pipe of water level sensor


We manufacture prefabricated pipes to be installed in plants such as water and sewage facilities. By performing reliable welding work at the factory, it is possible to reduce on-site welding work, shorten the on-site construction period, and ensure the quality of welding.

History of Kyowakiden Industry Co.,Ltd.

Kyowakiden Industry has acquired technology and skills with the development of
society for more than 70 years since it was founded in Nagasaki in 1948.