ʻO ka API 5L seamless steel pipe standard kahi kikoʻī i hoʻomohala ʻia e ka American Petroleum Institute (API) a hoʻohana nui ʻia i nā ʻōnaehana pipeline i ka ʻoihana aila a me ka ʻenehana. Hoʻohana nui ʻia nā paipu kila kila API 5L i ka lawe ʻana i ka aila, ke kinoea maoli, ka wai a me nā wai ʻē aʻe ma muli o ko lākou ikaika maikaʻi a me ke kūpaʻa corrosion. ʻO kēia ka hoʻolauna ʻana i nā mea like ʻole o ka maʻamau API 5L a me kā lākou noi noi, ka hana hana a me ka nānā ʻana i ka hale hana.

Mea waiwai
API 5L Gr.B, API 5L Gr.B X42, API 5L Gr.B X52, API 5L Gr.B X60, API 5L Gr.B X65, API 5L Gr.B X70

Kaʻina hana hana
ʻO ke kaʻina hana o API 5L seamless steel pipe e pili ana i kēia mau ʻanuʻu:

Koho i nā mea maka: E koho i nā pila kila kiʻekiʻe, maʻamau i ke kila kalapona a i ʻole ke kila haʻahaʻa.
Hoʻomaʻamaʻa a hou ʻia: Hoʻomaʻamaʻa ʻia ka billet i kahi mahana kūpono a laila hana ʻia kahi billet hollow tube ma o ka mīkini ʻoki.
ʻO ka ʻōwili wela: Hoʻomaʻamaʻa hou ʻia ka billet hollow tube ma kahi wili wela e hana i ke anawaena paipu i makemake ʻia a me ka mānoanoa o ka paia.
Hoʻomaʻamaʻa wela: ʻO ka hana maʻamau a i ʻole ke kinai ʻana a me ka hoʻomaʻamaʻa ʻana i ka paipu kila e hoʻomaikaʻi ai i kona ʻano mechanical.
Kiʻi anu a i ʻole ka ʻōwili anu: Hana ʻia ke kiʻi anu a i ʻole ka ʻōwili anu e like me ka mea i koi ʻia no ka loaʻa ʻana o ka pololei o ka nui a me ka maikaʻi o ka ʻili.
Nānā hale hana
Pono e nānā pono ʻia nā paipu kila ʻole API 5L ma mua o ka haʻalele ʻana i ka hale hana e hōʻoia i ka hoʻokō ʻana i nā koi maʻamau:

Ka nānā 'ana i ka haku mele: E 'ike i ka haku mele 'ana o ka paipu kila e hō'oia i ka ho'okō 'ana i nā kūlana i kuhikuhi 'ia.
ʻO ka hoʻāʻo ʻana i ka waiwai mīkini: E komo pū me ka ikaika tensile, hoʻoulu i ka ikaika a me nā hoʻāʻo elongation.
ʻO ka hoʻāʻo ʻole luku: E hoʻohana i ka ʻike kīnā kani ultrasonic a me ka hoʻāʻo X-ray e nānā i nā hemahema o loko o ka paipu kila.
ʻIke ʻana: E hōʻoia i ke anawaena o waho, ka mānoanoa o ka paia a me ka lōʻihi o ka paipu kila e hoʻokō i nā koi.
Hōʻike Hydrostatic: E hana i ka hoʻāʻo hydrostatic ma ka paipu kila e hōʻoia i kona palekana a me ka hilinaʻi ma lalo o ke kaomi hana.
Hōʻuluʻulu manaʻo
Hoʻohana nui ʻia nā paipu kila ʻole API 5L i ke kahua o ka lawe ʻana i ka aila a me ke kinoea ma muli o ko lākou ikaika kiʻekiʻe, ke kūpaʻa corrosion a me nā waiwai mechanical maikaʻi. ʻO nā paipu kila API 5L o nā ʻano mea like ʻole e kūpono i nā ʻano koʻikoʻi a me nā kūlana kaiapuni, e hālāwai ana i nā pono o nā kūlana hana paʻakikī. ʻO nā kaʻina hana hana koʻikoʻi a me ka nānā ʻana i nā hale hana e hōʻoia i ka maikaʻi a me ka hana o nā paipu kila, e hāʻawi ana i kahi hōʻoia no kahi ʻōnaehana palekana a maikaʻi.