*We deliver from 1 pc on the same day throughout Japan.
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Hanna Koatsu Kogyo Co., Ltd.

Professional of Square Flange
JIS B2291 is a flange used as a joint for piping exceeding 210kg/cm used for fuel of vessels, space rockets, etc. From the day of establishment, we, as a specialized manufacturer, have guaranteed the absolute quality and satisfied a lot of clients.

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Produce to the last minute"       "Attention to the quality of materials"
"Sincere response to the custom-made products"       "Pride as a professional manufacturer"