Ma ke ʻano he hangers hoʻokūkū ʻoi loa o ka ʻoihana, ua hoʻolālā ʻia a koi ʻia kā mākou hana u-strap no ka hoʻouka ʻana o nā paipu i hoʻopaʻa ʻia a i ʻole insulated, a hiki ke hoʻohana ʻia me nā mea hoʻokomo i nā kāʻei. A loaʻa iā lākou kahi kaulana nui a puni ka honua, keu hoʻi ma ʻAmelika ʻĀkau, ʻAmelika Hema, Hikina Waena 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.