日本システム企画 東京本社  Official site

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Effect verification of red rust to black rust in the water supply pipes of Coop Nomura Minami Ishikiri apartment.

日本システム企画

日本システム企画 東京本社 

In August 2001, 23 years after its construction, the Coop Nomura Minami Ishikiri installed a pipe rehabilitation device called "NMR Pipe Protector." The vinyl-lined water supply pipes have a statutory useful life of 20 years, and although 20 years have passed, making it 43 years since construction, they continue to be used without any signs of red rust deterioration. A few years ago, a pipe inspection was conducted, confirming that the red rust had turned to black rust and that the deterioration of the pipes had stopped.

Mansion Management Newspaper

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