ʻO nā ʻano nui o nā mea kumu no nā papa i uhi ʻia i nā kala:
1. Papa kila i uhi ʻia i ke kala o ka substrate i ʻōwili anu ʻia
He helehelena laumania a nani hoʻi ka papa kala i hana ʻia e ka papa kumu i ʻōwili anu ʻia, a he hana hana like ia me ka papa i ʻōwili anu ʻia; akā, ʻo kekahi mau ʻōpala liʻiliʻi ma ka ʻili e hōʻike i ka papa kumu i ʻōwili anu ʻia i ka lewa, i hiki ai i ka hao i hōʻike ʻia ke hana koke i ka ʻulaʻula. No laila, hiki ke hoʻohana ʻia kēia ʻano huahana no nā hana hoʻokaʻawale manawa pōkole a me nā mea o loko me nā koi haʻahaʻa.
2. Papa kila i uhi ʻia i ke kala galvanized wela-dip
ʻO ka huahana i loaʻa ma ka hoʻopili ʻana i kahi uhi organik ma luna o kahi pepa kila galvanized wela-ʻūlū he pepa i uhi ʻia i ke kala galvanized wela-ʻūlū. Ma waho aʻe o ka hopena pale o ka zinc, loaʻa i ka pepa i uhi ʻia i ke kala galvanized wela-ʻūlū ka hana o ka pale ʻana i ka insulation a me ka pale ʻana i ka popo, a ʻoi aku ka lōʻihi o ke ola lawelawe ma mua o ka pepa galvanized wela-ʻūlū. ʻO ka nui o ka zinc o ka substrate galvanized wela-ʻūlū maʻamau he 180g/mr (ʻaoʻao ʻelua), a ʻo ka nui o ka galvanized o ka substrate galvanized wela-ʻūlū no waho o ka hale he 275g/m3.