Ko te API 5L e pā ana ki te paerewa whakatinanatanga o ngā paipa raina, arā, ngā paipa e whakamahia ana hei kawe i te hinu, te mamaoa, te wai, me ētahi atu mea i tangohia mai i te whenua ki ngā umanga ahumahi hinu me te hau māori. Kei roto i ngā paipa raina ngā paipa rino kore hononga me ngā paipa rino whakarewa. I tēnei wā, ko ngā momo paipa rino whakarewa e whakamahia whānuitia ana i roto i ngā paipa hinu i Haina ko te paipa whakarewa pewa hurihuri (SSAW), te paipa whakarewa pewa hurihuri roa (LSAW), me te paipa whakarewa ātete hiko (ERW). Ko ngā paipa rino tuitui te nuinga o te wā ka tīpakohia ina iti iho i te 152mm te diameter o te paipa.

He maha ngā momo rauemi mata mō ngā paipa maitai API 5L: GR.B, X42, X46, X52, X56, X60, X70, X80, me ētahi atu. Inaianei, kua whakawhanakehia e ngā mira maitai nui pērā i a Baosteel ngā momo maitai mō te maitai paipa X100, X120. He nui ake ngā whakaritenga mō ngā rauemi mata me te hanga o ngā momo maitai rerekē o ngā paipa maitai, ā, he tino whakahaeretia te ōritenga waro i waenga i ngā momo maitai rerekē.

E mōhiotia ana e te katoa mō te API 5L, e rua ngā paerewa, ko te PSL1 me te PSL2. Ahakoa kotahi noa te rerekētanga o te kupu, he tino rerekē te ihirangi o ēnei paerewa e rua. He rite tēnei ki te paerewa GB/T9711.1.2.3. He rite tonu te kōrero mō ēnei mea katoa, engari he tino rerekē ngā whakaritenga. Ināianei ka kōrerohia e au te rerekētanga i waenga i te PSL1 me te PSL2 me te taipitopito:

1. Ko te PSL te whakarāpopototanga mō te taumata whakatakotoranga hua. Kua wehea te taumata whakatakotoranga hua o te paipa raina ki PSL1 me PSL2, ā, ka taea hoki te kī ko te taumata kounga kua wehea ki PSL1 me PSL2. He teitei ake te PSL2 i te PSL1. Kāore i te rerekē noa ngā whakaritenga tirotiro o ēnei taumata whakatakotoranga e rua, engari he rerekē anō hoki te hanganga matū me ngā āhuatanga miihini. Nō reira, i te wā e tono ana kia rite ki te API 5L, kaua e tohu noa ngā kupu o te kirimana i ngā tohu noa pēnei i ngā whakatakotoranga me ngā tohu maitai. Me tohu anō hoki te taumata whakatakotoranga hua, arā, PSL1, PSL2 rānei. He pakari ake te PSL2 i te PSL1 i ngā tohu pēnei i te hanganga matū, ngā āhuatanga kume, te kaha pānga, me te whakamātautau kore-whakangaro.

2, kāore e hiahiatia ana e te PSL1 te mahi pānga, ko te PSL2 mō ngā momo maitai katoa engari ko te x80, ko te uara toharite Akv tauine-katoa 0℃: roa ≥ 41J, whakawhiti ≥ 27J. Ko te kounga maitai X80, ko te uara toharite Akv tauine-katoa 0℃: roa ≥ 101J, whakawhiti ≥ 68J.

3. Me whakamātauhia te pēhanga wai o ngā paipa raina takitahi, ā, kāore te paerewa e whakaae ana kia whakamahia he whakamātautau kore-whakangaro hei whakakapi i te pēhanga wai. He rerekētanga nui anō hoki tēnei i waenga i te paerewa API me te paerewa Haina. Kāore e hiahiatia he tirotiro kore-whakangaro mō te PSL1, engari me tirotiro kore-whakangaro mō te PSL2 takitahi.