API 5L ka kakaretso e bua ka maemo a ts'ebetsong a lipeipi tsa mohala, e leng liphaephe tse sebelisoang ho tsamaisa oli, mouoane, metsi, joalo-joalo tse nkiloeng fatše ho ea likhoebong tsa indasteri ea oli le khase ea tlhaho. Liphaephe tsa mela li kenyelletsa lipeipi tsa tšepe tse se nang moroallo le lipeipi tsa tšepe tse cheselitsoeng. Hajoale, mefuta e tloahelehileng e sebelisoang liphaepheng tsa liphaephe tsa oli naheng ea China e kenyelletsa phala e kolobisitsoeng ka tlas'a metsi (SSAW), phala ea longitudinal submerged arc welded pipe (LSAW), le phala ea motlakase e kolobisitsoeng (ERW). Liphaephe tsa tšepe tsa seam hangata li khethoa ha bophara ba phala bo le ka tlase ho 152mm.

Ho na le limaraka tse ngata tsa lisebelisoa tse tala bakeng sa lipeipi tsa tšepe tsa API 5L: GR.B, X42, X46, X52, X56, X60, X70, X80, joalo-joalo. Hona joale limilo tse kholo tsa tšepe tse kang Baosteel li entse limaraka tsa tšepe tsa X100, X120 pipeline steel. Likarolo tse fapaneng tsa tšepe tsa liphaephe tsa tšepe li na le litlhoko tse phahameng tsa lisebelisoa tse tala le tlhahiso, 'me k'habone e lekanang pakeng tsa likarolo tse fapaneng tsa tšepe e laoloa ka thata.

Joalo ka ha motho e mong le e mong a tseba ka API 5L, ho na le litekanyetso tse peli, PSL1 le PSL2. Leha ho na le phapang e le 'ngoe feela ea mantsoe, litaba tsa litekanyetso tsena tse peli li fapane haholo. Sena se tšoana le boemo ba GB/T9711.1.2.3. Kaofela ba bua ka ntho e le 'ngoe, empa litlhoko li fapane haholo. Joale ke tla bua ka phapang lipakeng tsa PSL1 le PSL2 ka botlalo:

1. PSL ke khutsufatso ea boemo ba lintlha tsa sehlahisoa. Boemo ba tlhahiso ea sehlahisoa sa pipe ea mohala bo arotsoe ka PSL1 le PSL2, hape ho ka boleloa hore boemo ba boleng bo arotsoe ka PSL1 le PSL2. PSL2 e phahame ho feta PSL1. Maemo ana a mabeli a litlhaloso ha a fapane feela ka litlhoko tsa tlhahlobo, empa hape le ka metsoako ea lik'hemik'hale le thepa ea mochine. Ka hona, ha o laela ho latela API 5L, mantsoe a konteraka a ke ke a bontša feela matšoao a tloaelehileng a kang litlhaloso le limaraka tsa tšepe. , E tlameha hape ho bonts'a boemo ba tlhahiso ea sehlahisoa, ke hore, PSL1 kapa PSL2. PSL2 e thata ho feta PSL1 ho matšoao a joalo ka sebopeho sa lik'hemik'hale, thepa e tsitsitseng, matla a tšusumetso, le liteko tse sa senyeheng.

2, PSL1 ha e hloke ts'ebetso ea ts'ebetso, PSL2 limaraka tsohle tsa tšepe ntle le x80, tekanyo e felletseng ea 0℃ Akv boleng ba karolelano: longitudinal ≥ 41J, transverse ≥ 27J. X80 tšepe kereiti, ka tekanyo e feletseng 0℃ Akv karolelano boleng: longitudinal ≥ 101J, transverse ≥ 68J.

3. Lipeipi tsa liphaephe li lokela ho lekoa khatello ea metsi ka bonngoe, 'me maemo ha a behelle hore a lumelle khatello ea metsi e sa senyeheng. Hona hape ke phapang e kholo lipakeng tsa maemo a API le maemo a China. PSL1 ha e hloke tlhahlobo e sa senyeheng, PSL2 e lokela ho ba tlhahlobo e sa senyeheng ka bonngoe.