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Latest update: 30/11/2016 18:48:41

Dengennekki Kougyo Co., Ltd.

We are developing our business of supplying environmentally friendly spiral tubes.

We manufacturing and sell environmentally friendly spiral tubes. We have adopted fin tubes made using high-frequency electric resistance welding, which does not use a welding agent. We have simultaneously achieved consideration of the environment, ease of processing, and high strength at the welded portion. We have many domestic Japanese customers including Panasonic, Hitachi Appliance, and Nippon Thermoener. We have a track record of doing business overseas with Samsung Chemical, Hyundai Petrochemical, Nigerian National Petroleum, and so on. Fin tubes are attracting attention as a method to collect exhaust heat and residual heat in industrial equipment with the global rise in recognition of energy saving and environmental preservation. The tide is running in our favor, so we hope to expand our sales of fin tubes and thus expand our business.


Other presentation

[Company strength]
We have only a few competitors in Japan. We have advantages compared with these competitors, in that we have a track record with small-sized products. We can also flexibly support deliveries with small lots and a short delivery time. We do not use what is called an adhesive, so the environmental load is lower than ordinary welding.

[Business description]
We manufacture and sell spiral and fin tubes made using high-frequency electric resistance welding. We make use of electric resistance welding instead of a welding agent. We can achieve environmentally friendly processing using steel and so on as materials without using a welding agent, as well as high strength at the welded portion. Our main customers are power plants, petrochemical plants, waste treatment plants, and boiler manufacturers. There are only a few companies in Japan that possess this technology, and our company has the longest history in Japan.


[Strength of products/technologies]
The recognition of worldwide energy saving and environmental preservation is currently rising. In this context fin tubes are becoming indispensable for the overwhelming majority of chemical plants, heating furnaces, and general-purpose boilers. Fin tubes are used as a method for collecting exhaust heat and residual heat in industrial equipment. Our high-frequency electric resistance welding fin tubes have been recognized to be very effective in severe environments such as high temperature and high pressure. This is because they do not use glue and have a low environmental load. 

[Representative's message]
We are the only manufacturer in East Japan of products that are indispensable for downsizing heat exchange systems. We will provide a sample product if you plan to introduce this equipment. Please feel free to contact us.

[Company structure for market development/overseas expansion]
We have arranged a corporate system for satisfying various needs by making use of our wealth of experience and taking on the challenge of new materials. We hope to support our customers’ demands.

[Market share/Ranking]
We have a share of about 10% of the domestic Japanese market.

[Awards and media coverage]


We passed the welding procedure validation testing conducted by the High Pressure Gas Safety Institute of Japan.

[Joint research and development]
Panasonic: absorption-type refrigerators; Hitachi Appliance: large absorption-type refrigerators; Kawasaki Heavy Industries: atomic power plants; and Sumitomo Metal Industries: road surface snow melting system.

[Main Clients / Business History (domestic)]
Panasonic, Hitachi Appliance, Nippon Thermoener, JFE Engineering, Kawasaki Heavy Industries, Kawasaki Engineering, JGC Plant Innovation, Mitsubishi Heavy Industries, and so on.

[Main Clients / Business History (overseas)]
Samsung Chemical, Hyundai Petrochemical, Nigerian National Petroleum, Shell Malaysia, Canton Hitachi Refrigerator, and Hitachi Industrial Machinery Philippines.

This company is recommended by the following support organizations.

Kanto Head Office, SMRJ