Ma ke ʻano he hangers hoʻokūkū ʻoi loa o ka ʻoihana, ʻae ʻia kā mākou mau kukuna kaola kiʻekiʻe. A loaʻa iā lākou kahi kaulana nui a puni ka honua, keu hoʻi ma ʻAmelika ʻĀkau, ʻAmelika Hema, Hikina Waena, ʻEulopa a me ʻAsia. Eia kekahi, aia nā ʻano lapaʻau ʻokoʻa no kāu koho: Pre-galvanized, Zinc plated, epoxy a me Green galvanized hoʻopau e hālāwai me kāu pae ʻokoʻa anticorrosion pono.