Pili ke kila i kahi mea metala me ka hao ka mea nui, ka maʻi kalapona ma lalo o 2.0% a me nā mea ʻē aʻe. ʻO ka ʻokoʻa ma waena o ia a me ka hao, ʻo ia ke kalapona. Pono e ʻōlelo ʻia he ʻoi aku ka paʻakikī a ʻoi aku ka lōʻihi ma mua o ka hao. ʻOiai ʻaʻole maʻalahi ka ʻōpala, paʻakikī ke hōʻoiaʻiʻo e ʻānaʻi ʻia. Inā ʻeha ʻia a mālama ʻole ʻia i ka manawa, e maʻalahi ka ʻino. Nalo i ka hana i manaʻo ʻia e loaʻa.

Ke ʻāhule ʻia ka paipu kila ʻole, he aha nā ʻano lapaʻau maʻamau? E hoʻohana kekahi poʻe i ke ʻano hoʻomaʻemaʻe e hoʻomaʻemaʻe i ka paipu kila kila. Ke hoʻomaʻemaʻe, pono e hoʻomaʻemaʻe ʻia ka ʻili o ke kila me ka solvent a me ka emulsion ma mua. Hoʻohana wale ʻia kēia ʻano ma ke ʻano he mea kōkua no ka anti-corrosion a ʻaʻole hiki ke wehe maoli i ka paipu kila kila. hopena o ka ʻōpala. Hiki iā mākou ke hoʻohana i nā pulupulu kila, nā pōpō uwea a me nā mea hana ʻē aʻe e wehe i ka unahi oxide a me ka ʻōpala ma luna o ka ʻili ma mua o ka hoʻomaʻemaʻe ʻana, akā inā ʻaʻole mākou e hana i nā hana pale, e hoʻopau hou ʻia.

ʻO ka pickling kekahi o nā ala e wehe ai i ka ʻōpala. ʻO ka maʻamau, hoʻohana ʻia nā ʻano ʻelua o ke kemika a me ka electrolysis no ka mālama ʻana i ka pickling, a ʻo ka pickling kemika wale nō i hoʻohana ʻia no ka pipeline anticorrosion. ʻOiai hiki i kēia ʻano hana ke hoʻokō i kahi pae o ka hoʻomaʻemaʻe, maʻalahi ke kumu o ka pollution i ke kaiapuni, no laila ʻaʻole ʻōlelo ʻia e hoʻohana.

Me ka hoʻohana ʻana i ka jet derusting, kiʻekiʻe-mana kaʻa kaʻa jet blades e hoʻololi i ke kiʻekiʻe wikiwiki, i mea abrasives e like me ke kila grit, pana kila, hao uwea māhele, a me nā minela ua jetted ma luna o ka ili o kuhiliʻole kila paipu ma lalo o ka hana centrifugal ikaika. ʻAʻole hiki ke hoʻopau loa ʻia ka rust, oxides a me ka lepo, akā hiki i ka paipu kila ke hoʻokō i ke ʻano ʻokoʻa like ʻole ma lalo o ka hana o ka hopena ikaika a me ka friction o ka abrasive. ʻO ka hoʻohemo ʻana i ka ʻōpala he ala maikaʻi loa e hoʻopau ai i ka ʻōpala i nā ʻano anticorrosion pipeline. Ma waena o lākou, hoʻohana ʻia nā manaʻo kino he nui, liʻiliʻi ka pollution i ke kaiapuni, a ʻo ka hoʻomaʻemaʻe ʻana.