Nā kikoʻī maʻamau
API 5LʻO ka maʻamau, pili ia i ke kūlana hoʻokō no nā paipu kila pipeline. Hoʻokomo pū ʻia nā paipu kila seamless a me nā paipu kila welded. I kēia manawa, ʻo nā ʻano paipu kila welded i hoʻohana pinepine ʻia ma nā pipelines aila e komo pū ana me ka paipu welded arc spiral submerged (SSAW), ka paipu welded arc submerged seam pololei (LSAW), a me ka paipu welded resistance uila (ERW). Koho pinepine ʻia nā paipu kila seamless i ka wā e emi ai ke anawaena o ka paipu ma mua o 152mm.
Ua hōʻuluʻulu ʻia nā paipu kila GB/T 9711-2011 maʻamau aupuni no nā ʻōnaehana halihali paipu ʻaila a me ke kinoea ma muli oAPI 5L.
Kuhikuhi ʻo GB/T 9711-2011 i nā koi hana no nā paipu kila humuhumu a me nā paipu kila i hoʻopaʻa ʻia ma nā pae kikoʻī huahana ʻelua (PSL1 a me PSL2) i hoʻohana ʻia i nā ʻōnaehana halihali paipu ʻoihana aila a me ke kinoea. No laila, pili wale kēia kūlana i nā paipu kila humuhumu a me nā paipu kila i hoʻopaʻa ʻia no ka halihali aila a me ke kinoea, a ʻaʻole pili i nā paipu hao i hoʻolei ʻia.
Papa kila
ʻO nā papa kila maka oAPI 5LʻO nā paipu kila e komo pū ana me ke kila paipu GR.B, X42, X46, X52, X56, X60, X70, X120. He ʻokoʻa nā koi o nā paipu kila like ʻole no nā mea maka a me ka hana ʻana, akā ua kāohi pono ʻia ke kalapona like ma waena o nā papa kila like ʻole.
Kūlana Kūlana
Ma ke kūlana paipu kila API 5L, ua māhele ʻia nā kūlana maikaʻi (a i ʻole nā ​​​​koi) o nā paipu kila i PSL1 a me PSL2. ʻO PSL ka pōkole o ka pae kikoʻī huahana.
Hāʻawi ʻo PSL1 i nā koi pae maikaʻi o ka paipu kila pipeline maʻamau; Hoʻohui ʻo PSL2 i nā koi mandatory no ka haku mele kemika, ka notch toughness, nā waiwai ikaika a me ka NDE hoʻohui.
ʻO ke ʻano paipu kila o ka paipu kila PSL1 (inoa e hōʻike ana i ka pae ikaika o ka paipu kila, e like me L290, 290 e pili ana i ka ikaika haʻahaʻa loa o ke kino paipu he 290MPa) a me ke ʻano kila (a i ʻole ka papa, e like me X42, kahi e hōʻike ai ʻo 42 i ka ikaika haʻahaʻa loa a i ʻole ka pōʻai i luna. ʻO ka ikaika haʻahaʻa loa o ka paipu kila (ma psi) ua like ia me ko ka paipu kila. Hana ʻia ia me nā leka a i ʻole kahi helu hui o nā leka a me nā helu e hōʻike ana i ka pae ikaika o ka paipu kila, a pili ka papa kila i ka hoʻohui kemika o ke kila.
Ua haku ʻia nā paipu kila PSL2 me nā leka a i ʻole ka hui pū ʻana o nā leka a me nā helu i hoʻohana ʻia e ʻike i ka pae ikaika o ka paipu kila. Pili ka inoa kila (pae kila) i ka hoʻohui kemika o ke kila. Hoʻokomo pū ia i hoʻokahi leka (R, N, Q a i ʻole M) e hana i kahi hope, e hōʻike ana i ke kūlana lawe. No PSL2, ma hope o ke kūlana lawe, aia pū kekahi leka S (kaiapuni lawelawe waikawa) a i ʻole O (kaiapuni lawelawe moana) e hōʻike ana i ke kūlana lawelawe.