Nā kikoʻī maʻamau

ʻO ka API 5L ka mea maʻamau i ke kūlana hoʻokō no ka paipu laina. Aia nā paipu laina i nā paipu kila ʻole a me nā paipu kila welded. I kēia manawa, ʻo nā ʻano paipu kila welded maʻamau ma nā paipu aila, ʻo ia ka spiral submerged arc welded pipe (SSAW), straight seam submerged arc welded pipe (LSAW), a me ka uila kū'ē i ka welded pipe (ERW). ʻO nā paipu kila ʻole ke koho ʻia inā ʻoi aku ka liʻiliʻi o ke anawaena o ka paipu ma mua o 152mm.

ʻO ka pae aupuni GB/T 9711-2011 Steel paipu no ka ʻaila a me ka ʻoihana ʻoihana pipeline ʻōnaehana kaʻa i hoʻohui ʻia ma muli o API 5L.

GB/T 9711- 2011 i nā koi hana no nā paipu kila ʻole a me nā paipu kila welded ma nā pae kikoʻī huahana ʻelua (PSL1 a me PSL2) i hoʻohana ʻia i ka ʻaila a me nā ʻōnaehana ʻoihana pipeline. No laila, pili kēia maʻamau i nā paipu kila ʻole a me nā paipu kila welded no ka lawe ʻana i ka aila a me ke kinoea, a ʻaʻole pili i nā paipu hao.

Papa kila

ʻO nā māka kila waiwai maka oAPI 5Lnā paipu kila me GR.B,X42, X46, X52, X56, X60, X70, X80.

Kūlana Kūlana

I ka API 5L paipu kila, 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 pipeline steel pipeline; Hoʻohui ʻo PSL2 i nā koi koi no ka haku mele ʻana, ka paʻakikī notch, nā waiwai ikaika a me ka NDE hou.

ʻO ka pae 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 haʻahaʻa o ke kino paipu he 290MPa) a me ke kila kila (aiʻole ka pae, e like me X42, kahi. 42 hōʻike i ka ikaika hāʻawi liʻiliʻi a i ʻole ka pōʻai i luna ʻO ka ikaika haʻahaʻa haʻahaʻa o ka paipu kila (i ka psi) ua like ia me ka paipu kila Ua haku ʻia me nā leka a i ʻole nā ​​helu hui ʻia o nā leka a me nā helu e ʻike ai i ka pae ikaika o ka paipu kila, a ua pili ka papa kila i ka hana kemika o ke kila.

ʻO nā paipu kila PSL2 i haku ʻia 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. ʻO ka inoa kila (steel grade) e pili ana i ka hana kemika o ke kila. Aia pū kekahi leka hoʻokahi (R, N, Q a i ʻole M) i kahi suffix, e hōʻike ana i ke kūlana hoʻopuka. No ka PSL2, ma hope o ke kūlana o ka lawe ʻana, aia pū kekahi leka S (kahi o ka lawelawe ʻana i ka waikawa) a i ʻole O (kahi lawelawe kai moana) e hōʻike ana i ke kūlana lawelawe.

Hoʻohālikelike Kūlana Kūlana

1. ʻOi aku ka kiʻekiʻe o ke kūlana maikaʻi o PSL2 ma mua o ka PSL1. ʻAʻole i loaʻa i kēia mau pae kikoʻī ʻelua nā koi nānā ʻokoʻa, akā loaʻa nā koi like ʻole no ka haku melemele a me nā waiwai mechanical. No laila, i ka wā e kauoha ai e like me ka API 5L, ʻaʻole pono nā huaʻōlelo i loko o ka ʻaelike e hōʻike wale i nā kikoʻī, nā māka kila, a me nā mea ʻē aʻe. ʻOi aku ka koʻikoʻi o PSL2 ma mua o PSL1 ma ke ʻano o ka haku mele, nā waiwai tensile, ka ikehu hopena, ka hoʻāʻo ʻole luku a me nā hōʻailona ʻē aʻe.

2. ʻAʻole pono ka PSL1 i ka hana hopena. No nā māka kila a pau o PSL2 koe X80 kila kila, piha nui 0℃ Akv awelika: longitudinal ≥101J, transverse ≥68J.

3. Pono e ho'āʻoʻia nā paipu laina no ke kaomi hydraulic i kēlā me kēia, aʻaʻole i'ōleloʻia ka maʻamau eʻaeʻia ka hoʻololiʻole o ka wai. He ʻokoʻa nui kēia ma waena o nā kūlana API a me nā kūlana Kina. ʻAʻole pono ʻo PSL1 i ka nānā ʻana i ka mea luku ʻole, ʻoiai ʻo PSL2 e koi i ka nānā ʻole ʻana i kēlā me kēia.