ʻO ke kila kuhili ʻole ʻoihana:mea hoʻololi wela, boiler, petroleum, kemika, fertilizer chemical, fiber chemical, pharmaceutical, nuclear power, etc.
ʻO ke kila kila no ka wai:mea inu, pia, waiu, ʻōnaehana hoʻolako wai, mea lapaʻau, etc.
ʻO ka wili kila kila no ka hana mechanical:paʻi a hoʻoluʻu, paʻi, textile machines, lāʻau lapaʻau, lako kīhini, ʻāpana kaʻa a me nā moku, kūkulu ʻia a me nā mea hoʻonaninani, etc.
ʻO ke kila kila kila ʻole:wili ʻia ke kāʻei kuhili ʻole a laila hoʻemi ʻia ka pā.Hoʻemi ʻia ka pā mai ka mānoanoa a hiki i ka lahilahi.Hiki i kēia kaʻina hana ke hana i ka mānoanoa o ka pā i ke ʻano a me ka maʻalahi, a hoʻemi ʻia ka pā a hoʻolōʻihi ʻia e hana i ka hopena o ka weld ʻole.E like me ka maka olohelohe ka seamless paipu, akā, kona kaʻina hoʻoholo i welded paipu.ʻO ke kaʻina hana o ka hoʻohaʻahaʻa ʻana i ka pā e hui pū ʻia me ka annealing mālamalama, i ʻole e hoʻokumu ʻia ka pā o loko a me waho i ka papa oxide, a me ka nani o loko a me waho e pono ai no nā huahana lapaʻau.ʻO ke kaʻina hana aʻe e pono ai ka nui, ʻo ia hoʻi, ka huki nui ʻana i ke kaʻina liʻiliʻi, e hoʻoholo i ke anawaena o waho, hiki i ka ʻae ʻana o waho ke hōʻea i ka 0.01mm a i ʻole.