ʻO ke kūkulu ʻia ʻana o ka paipu ʻo ia ke ʻano hana hana pipeline i hoʻomohala ʻia ma hope o ke kūkulu ʻana i ka pale. ʻAʻole ia e koi i ka ʻeli ʻana i nā papa o ka ʻili, a hiki ke hele i nā alanui, nā alahao, nā muliwai, nā hale ʻili, nā hale o lalo, a me nā ʻano paipu lalo.

Hoʻohana ka hana ʻana i ka paipu i ka pahu o ka pahu pahu nui a me ke keʻena relay ma waena o nā paipu e pahu i ka paipu mea hana a i ʻole ke poʻo alanui mai ka hana maikaʻi ma o ka papa lepo a i ka luawai hoʻokipa. I ka manawa like, ua kanu ʻia ka pipeline ma hope koke o ka paipu hāmeʻa a i ʻole ka mīkini ʻeha ma waena o nā pūnāwai ʻelua, i mea e ʻike ai i ke ʻano hana o ka hoʻomoe ʻana i nā paipu lalo me ka ʻole o ka ʻeli ʻana.