Hana ʻia ka paipu kila ʻeleʻele i ke kila ʻaʻole i galvanized.Loaʻa kona inoa mai ka uhi ʻana i ka hao oxide ʻeleʻele ma luna o kona ʻili.Hoʻohana ʻia ia i nā noi ʻaʻole pono ke kila galvanized.

Ua kapa ʻia ka paipu kila ʻeleʻele (Ucoated steel pipe) "ʻeleʻele" ma muli o ka ʻeleʻele iron-oxide unahi i hana ʻia ma luna o kona ʻili;hoʻohana mau ʻia no nā paipu hoʻomehana wai wela haʻahaʻa.Loaʻa iā ia i ʻelua papa manawa (papa 40 a me 80).ʻO ka ʻokoʻa ma waena o nā papa ʻelua ʻo ka laulā o ka pā o ka paipu.ʻOi aku ka mānoanoa o ka paipu kila ʻeleʻele 80 ma mua o ka papa kuhikuhi 40. Ma nā ʻāina he nui e koi ʻia ka papa kuhikuhi 80 no ka laina condensate ma muli o ka waikawa a me nā haumia.Manaʻo nui wau iā ia ma luna o ka papa 40.

Ke hana ʻia ka paipu kila, hana ʻia kahi unahi ʻohe ʻeleʻele ma luna o kona ʻili e hāʻawi i ka hopena i ʻike ʻia ma kēia ʻano paipu.No ka mea e pili ana ke kila i ka ʻōpala a me ka corrosion, ua uhi pū ka hale hana me ka ʻaila pale.Hoʻohana ʻia kēlā mau kila ʻeleʻele no ka hana ʻana i ka paipu a me ka paipu, ʻaʻole ia e pulu no ka manawa lōʻihi a pono ka mālama liʻiliʻi.Kūʻai ʻia ma TBE 21 kapuaʻi maʻamau.Hoʻohana nui ʻia ia no ka hoʻohana maʻamau i ka wai, gas, ea a me ka mahu, hoʻohana ʻia nā paipu kila ʻeleʻele a me nā paipu no ka hāʻawi ʻana i ke kinoea i loko a i waho o ka hale a no ka holo ʻana o ka wai wela i nā ʻōnaehana boiler.Hoʻohana ʻia ia no nā paipu laina i nā ʻoihana ʻaila a me ka ʻaila, no nā pūnāwai wai a no ka wai, ke kinoea a me nā kumu wai.