ʻO ka paipu kila kila he ʻano o ke kila a puni ka lōʻihi, ka mea i hoʻohana nui ʻia i nā pipelines halihali ʻoihana a me nā mea hana mechanical e like me ka petroleum, ka ʻoihana kemika, ka lāʻau lapaʻau, ka meaʻai, ka ʻoihana māmā, ka mea hana mechanical a pēlā aku. Eia kekahi, i ka wā e like ai ke kulou a me ka ikaika torsional, ʻoi aku ka maʻalahi o ke kaumaha, no laila hoʻohana nui ʻia i ka hana ʻana i nā ʻāpana mechanical a me nā hale ʻenekinia.