ʻO ka paipu ʻāwili paʻa paʻa pālua
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ʻO ka paipu ʻāwili paʻa paʻa pālua
ʻO ka paipu ʻāwīwī palua-pā: he ʻano paipu hou me ka paia o waho annular a me ka paia o loko. Hoʻohana nui ʻia ia no ka hāʻawi ʻana i ka wai nui, ka wai wai, ka hoʻoheheʻe ʻana, ka hoʻokuʻu ʻana i ka wai, ka exhaust, subway ventilation, mine ventilation, irrigation ʻāina mahiʻai a pēlā aku me ke kaomi hana ma lalo o 0.6MPa. He uliuli a ʻeleʻele ka waihoʻoluʻu o ka paia o loko, a e hoʻohana kekahi mau lama melemele.