He ʻano hana maʻamau ka hana ʻana i ka metala, e pili ana i ka ʻoki ʻana, ka kuʻi, ka wili, a me ka pena ʻana i nā ʻāpana metala i ke ʻano a me ka nui i makemake ʻia.Ma ke ʻano he ʻāpana metala kūpaʻa-corrosion, hoʻohana nui ʻia ka pepa galvanized i ka hana ʻana i ka metala.ʻO ka pā hānai holoholona he ipu ia e ʻai ai nā holoholona.He mea koʻikoʻi kona maikaʻi a me kona hoʻolālā no ka maʻemaʻe a me ka palekana o ka meaʻai holoholona.He nui nā mea maikaʻi o nā pā hanai holoholona lauwili pepa metala.ʻO ka mea mua, he kūpaʻa maikaʻi nā pale galvanized a hiki ke hoʻohana ʻia i nā wahi haʻahaʻa no ka manawa lōʻihi me ka ʻole o ka ʻōpala.He mea nui kēia no nā pā hānai holoholona no ka mea e ʻike pinepine ʻia lākou i nā wai a me nā mea e like me ka wai, ka meaʻai a me ka ʻōpala holoholona.ʻO ka lua, ʻo ka ʻili o ka pepa galvanized he pālahalaha, maʻalahi a maʻalahi hoʻi e hoʻomaʻemaʻe.Pono e hoʻomaʻemaʻe pinepine ʻia nā pā hānai holoholona e hōʻoia i ka maʻemaʻe o ka meaʻai a me ke olakino holoholona.ʻO ka maʻemaʻe o nā pale galvanized e maʻalahi a maʻalahi ka hoʻomaʻemaʻe, ʻoiai e hōʻemi ana i ka ulu ʻana o ka bacteria a me ka lepo.Eia kekahi, he ikaika kiʻekiʻe ka pale galvanized a hiki ke pale i ka extrusion a me ka hui ʻana o nā holoholona i ka wā e ʻai ai.Nau pinepine nā holoholona i ka pā hānai i ka wā e ʻai ai.Hiki i nā papa galvanized ikaika kiʻekiʻe ke pale pono i ka paʻi hānai ʻana mai ka haki ʻana a i ʻole ka pōʻino i waena, e hōʻoia ana e ʻai pono nā holoholona.I ka pōkole, ʻo ka lau metala i hoʻoponopono ʻia i ka pā hānai holoholona he koho kiʻekiʻe.ʻAʻole ia wale nō ka corrosion-resistant, maʻalahi e hoʻomaʻemaʻe a kiʻekiʻe i ka ikaika, akā hiki ke hōʻoia pono i ka maʻemaʻe a me ka palekana o ka meaʻai holoholona.Inā he holoholona ma ka mahiʻai a i ʻole nā holoholona hoʻokolohua i loko o ka hale hana, hiki i kēia pā hānai ke hoʻokō i kā lākou mau pono a hāʻawi i kahi ʻai olakino a palekana.