ʻO keʻano o ka kala kala uilaʻo ZinC (C2c) i hāpaiʻia,ʻo ka mānoanoa o ka papaʻa he 8-15,00
Aia nō ia he nui o nā bolts he nui, nā'ōpala ākea, flat i loko, nā puna wai a me nā pua hexagonal. ʻO ka mea kūʻai aku ka nui o nā mea kūʻai aku (e like me Q235), a me ka mānoanoa o ka mea electrorgalvalized he 5-12μ-
ʻO kā mākouʻoihana e hana nui a kūʻai aku i nā bolts pokts he nui, Hoops