Nā Laʻau Lapaʻau maʻamau no nā Bolts

Ka uhi ʻana: e hoʻopili ana i kahi uhi i ka ʻili o ka bolt e hana i kahi kiʻi ʻoniʻoni e hoʻomaikaʻi i kona kūpaʻa ʻana a me kona helehelena. ʻO ka pōmaikaʻi ke nānā aku, akā, ʻo ka pōʻino, ʻaʻole paʻa a maʻalahi hoʻi i ka haki.
ʻO ka galvanizing wela: ka hoʻokomo ʻana i ka pahu i loko o ka zinc hehee e hoʻomaikaʻi i kona kūpaʻa ʻana. ʻO ka pōmaikaʻi ʻo ia ka mana anti-corrosion ikaika a ʻaʻole maʻalahi e hāʻule, akā ʻo ka hemahema, ʻaʻole i lawa ka nani o ka ʻili.
Electroplating: ka hoʻokomo ʻana i ka bolt i loko o kahi electrolyte a waiho i kahi ʻāpana metala ma luna o ka ʻili o ka bolt ma o ka electrolysis e hoʻomaikaʻi i kona kūpaʻa ʻana a me kona ʻano.. ʻO ka pōmaikaʻi ʻo ia ka maʻalahi a me ka nani o ka ʻili, akā ʻo ka pōʻino, ʻo ia ka hiki ke hoʻoheheʻe i ka hydrogen.
Dacro: ka hoʻokomo ʻana i nā kī i loko o kahi solution zinc-aluminum, e hōʻoia i ka pili pono ʻana o ka pōleʻa me ka hoʻonā ma mua o ka lulu ʻana i ka hopena keu a maloʻo. E hana hou i ka hana i luna 2-4 nā manawa e hana i kahi kiʻiʻoniʻoni ma luna o ka ʻili o ka bolt, ka loaʻa ʻana o ka hopena o ka anticorrosion. ʻO ka maikaʻi o kēia kaʻina hana he nani ka ʻili a ʻaʻole maʻalahi e hāʻule, akā, ʻo ka pōʻino, ʻaʻole paʻa a maʻalahi hoʻi i ka haki. I kēia manawa aia kahi ʻano hexavalent chromium-free formula, ʻoi aku ka maikaʻi o ke kaiapuni.