Nā kikoʻī maʻamau

ʻO ka API 5L ma ke ʻano laulā e pili ana i ke kūlana hoʻokō no ka paipu laina. Hoʻokomo pū ka paipu laina i nā paipu kila humuhumu a me nā paipu kila i hoʻopaʻa ʻia. I kēia manawa, ʻo nā ʻano paipu kila i hoʻopaʻa ʻia ma nā paipu ʻaila e komo pū ana me ka paipu wili i hoʻopaʻa ʻia me ke arc (SSAW), ka paipu wili i hoʻopaʻa ʻia me ke arc (LSAW), a me ka paipu wili pale uila (ERW). Koho pinepine ʻia nā paipu kila humuhumu i ka wā e emi ai ke anawaena o ka paipu ma mua o 152mm.

Ua hoʻohui ʻia nā paipu kila maʻamau GB/T 9711-2011 no nā ʻōnaehana halihali paipu ʻoihana aila a me ke kinoea ma muli o API 5L.

GB/T 9711-2011 e kuhikuhi ana 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 me GR.B,X42, X46, X52, X56, X60, X70, X80, a pēlā aku. 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 kaulike kalapona 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.

Hoʻohālikelike Kūlana Kiʻekiʻe

1. ʻOi aku ke kiʻekiʻe o ke kūlana maikaʻi o PSL2 ma mua o PSL1. ʻAʻole wale nā ​​​​​​paepae kikoʻī ʻelua i nā koi nānā like ʻole, akā he ʻokoʻa hoʻi nā koi no ka hoʻohuihui kemika a me nā waiwai mechanical. No laila, i ke kauoha ʻana e like me API 5L, ʻaʻole pono e hōʻike wale nā ​​​​huaʻōlelo i loko o ka ʻaelike i nā kikoʻī, nā māka kila, a pēlā aku. Ma waho aʻe o nā hōʻailona maʻamau, pono e hōʻike ʻia ka pae kikoʻī huahana, ʻo ia hoʻi, PSL1 a i ʻole PSL2. ʻOi aku ka paʻakikī o PSL2 ma mua o PSL1 ma ke ʻano o ka hoʻohuihui kemika, nā waiwai tensile, ka ikehu hopena, ka hoʻāʻo ʻole luku a me nā hōʻailona ʻē aʻe.

2. ʻAʻole koi ʻo PSL1 i ka hana hopena. No nā papa kila āpau o PSL2 koe wale nō ke papa kila X80, ʻo ka nui piha 0℃ Akv awelika: longitudinal ≥101J, transverse ≥68J.

3. Pono e hoʻāʻo ʻia nā paipu laina no ke kaomi hydraulic hoʻokahi, a ʻaʻole i ʻōlelo ke kūlana e ʻae ʻia ka hoʻololi ʻana o ke kaomi wai me ka luku ʻole. He ʻokoʻa nui nō hoʻi kēia ma waena o nā kūlana API a me nā kūlana Kina. ʻAʻole koi ʻo PSL1 i ka nānā ʻana me ka luku ʻole, ʻoiai ʻo PSL2 e koi ana i ka nānā ʻana me ka luku ʻole hoʻokahi.