Ngā whakaritenga paerewa
API 5LKo te tikanga whānui e pā ana ki te paerewa whakatinanatanga mō ngā paipa maitai paipa. Kei roto i ngā paipa maitai paipa ngā paipa maitai kore hononga me ngā paipa maitai whakarewa. I tēnei wā, ko ngā momo paipa maitai whakarewa e whakamahia whānuitia ana i runga i ngā paipa hinu ko te paipa whakarewa pewa hurihuri (SSAW), te paipa whakarewa pewa hurihuri hononga tika (LSAW), me te paipa whakarewa ātete hiko (ERW). Ko ngā paipa maitai kore hononga ka tīpakohia i te nuinga o te wā ina iti iho i te 152mm te diameter o te paipa.
Ko te paerewa ā-motu GB/T 9711-2011 mō ngā paipa maitai mō ngā pūnaha kawe paipa o te umanga hinu me te hau, kua whakahiatohia i runga iAPI 5L.
E whakamārama ana a GB/T 9711-2011 i ngā whakaritenga hanga mō ngā paipa rino kore hononga me ngā paipa rino whakarewa i ngā taumata whakatakotoranga hua e rua (PSL1 me PSL2) e whakamahia ana i roto i ngā pūnaha kawe paipa ahumahi hinu me te hau. Nō reira, e pā ana tēnei paerewa ki ngā paipa rino kore hononga me ngā paipa rino whakarewa mō te kawe hinu me te hau, ā, kāore e pā ki ngā paipa rino maka.
Te taumata maitai
Ko ngā taumata maitai o ngā rauemi mata oAPI 5LKei roto i ngā paipa maitai ko te maitai paipa GR.B, X42, X46, X52, X56, X60, X70, X120. He rerekē ngā whakaritenga mō ngā rauemi mata me te hanga o ngā paipa maitai rerekē, engari he tino whakahaeretia te ōritenga waro i waenga i ngā momo maitai rerekē.
Paerewa Kounga
I roto i te paerewa paipa maitai API 5L, ka wehea ngā paerewa kounga (ngā whakaritenga rānei) o ngā paipa maitai ki te PSL1 me te PSL2. Ko te PSL te whakarāpopototanga o te taumata whakatakotoranga hua.
E whakarato ana a PSL1 i ngā whakaritenga whānui mō te kounga paipa maitai; e tāpiri ana a PSL2 i ngā whakaritenga ā-ture mō te hanganga matū, te pakari o te kohao, ngā āhuatanga kaha me te NDE tāpiri.
Ko te taumata paipa rino o te paipa rino PSL1 (ko te ingoa e tohu ana i te taumata kaha o te paipa rino, pērā i te L290, ko te 290 e pā ana ki te kaha tuku iti rawa o te tinana paipa ko te 290MPa) me te taumata rino (te taumata rānei, pērā i te X42, ko te 42 te tohu o te kaha tuku iti rawa, te porowhita whakarunga rānei. Ko te kaha tuku iti rawa o te paipa rino (i roto i te psi) he rite ki te paipa rino. He mea tito mai i ngā reta, i te maha whakauru rānei o ngā reta me ngā tau e tohu ana i te taumata kaha o te paipa rino, ā, e pā ana te taumata rino ki te hanganga matū o te rino.
Ko ngā paipa maitai PSL2 he mea tito mai i ngā reta, i te huinga rānei o ngā reta me ngā tau hei tautuhi i te taumata kaha o te paipa maitai. E pā ana te ingoa maitai (te taumata maitai) ki te hanganga matū o te maitai. Kei roto hoki he reta kotahi (R, N, Q, M rānei) hei hanga i tētahi whakamutunga, e tohu ana i te tūnga tuku. Mō PSL2, i muri i te tūnga tuku, kei reira anō te reta S (taiao ratonga waikawa) me te O rānei (taiao ratonga moana) e tohu ana i te tūnga ratonga.