Hanna Koatsu Kogyo Co., Ltd. was established by Shigeru Matsumoto (President) in May, 1973 as a specialized manufacturer of
pipe flanges for hydraulic pressure, JIS B2291.
We have produced pipe flanges piece by piece with care, which are used as joints of the fuel piping for the locations exposed to a high
pressure including tankers for large plants, rockets, nuclear power plants, etc.
No matter how times change, all our employees are proud that each small joint firmly supports the foundation of the industry.
As a leading specialized manufacturer, we will continue to work accurately and precisely everyday and produce the best quality products
that meet the needs of the clients.
Please look forward to our future developments.