Outline* The shown information is the one as of the awarded date and might has been changed.
SPR is spirally would pipe rehabilitation method to renew aged pipeline with trenchless. It can rehabilitate large and out of round shape pipe under live flow.
Kozo Takami, Kenichi Ogawa, Kunio Adachi
Akira Imagawa, Yoshihumi Takahashi, yuusuke Adachi
Mitsuhiko Watanabe, Yukitoshi Iwasa, Kouji uchida, Hamao Yamashiro
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- Already in service/use