Iinkcukacha ezisemgangathweni
API 5Lngokubanzi ibhekisa kumgangatho wokwenziwa kwemibhobho yentsimbi yombhobho. Imibhobho yentsimbi yombhobho ibandakanya imibhobho yentsimbi engenamthungo kunye nemibhobho yentsimbi edityanisiweyo. Okwangoku, iintlobo zemibhobho yentsimbi esetyenziswa ngokuqhelekileyo kwimibhobho yeoli ibandakanya i-spiral submerged arc welded pipe (SSAW), i-straight seam edityanisiweyo yombhobho odityanisiweyo we-arc (LSAW), kunye nombhobho odityanisiweyo wokumelana nombane (ERW). Imibhobho yentsimbi engenamthungo ikhethwa ngokubanzi xa i-diameter yombhobho ingaphantsi kwe-152mm.
Umgangatho wesizwe we-GB/T 9711-2011 Imibhobho yentsimbi yeendlela zothutho lweoyile kunye negesi yegesi ihlanganiswe ngokusekweAPI 5L.
I-GB/T 9711-2011 icacisa iimfuno zokwenziwa kwemibhobho yentsimbi engenamthungo kunye nemibhobho yentsimbi edityanisiweyo kumanqanaba amabini okucaciswa kwemveliso (PSL1 kunye ne-PSL2) esetyenziswa kwiinkqubo zothutho lwemibhobho ye-oyile kunye negesi. Ngoko ke, lo mgangatho usebenza kuphela kwimibhobho yensimbi engenamthungo kunye nemibhobho yentsimbi edityanisiweyo yokuthutha ioli kunye negesi, kwaye ayisebenzi kwimibhobho yentsimbi.
Ibakala Steel
Amanqaku entsimbi ekrwada yeAPI 5Limibhobho yentsimbi ibandakanya i-GR.B, X42, X46, X52, X56, X60, X70, X120 pipeline steel. Iindidi ezahlukeneyo zetsimbi zeemibhobho zetsimbi zineemfuno ezahlukeneyo zezinto eziluhlaza kunye nemveliso, kodwa ukulingana kwekhabhoni phakathi kwamabakala ensimbi ahlukeneyo alawulwa ngokungqongqo.
Umgangatho woMgangatho
Kumgangatho we-API 5L wepayipi yensimbi, imigangatho yomgangatho (okanye iimfuno) zemibhobho yensimbi ihlulwe kwi-PSL1 kunye ne-PSL2. I-PSL sisishunqulelo senqanaba lokuchazwa kwemveliso.
I-PSL1 ibonelela ngeemfuno zomgangatho wombhobho wentsimbi ngokubanzi; I-PSL2 yongeza iimfuno ezisisinyanzelo zokwakheka kweekhemikhali, ukuqina kwenotshi, iipropathi zamandla kunye ne-NDE eyongezelelweyo.
Inqanaba lombhobho wensimbi we-PSL1 umbhobho wensimbi (igama elibonisa umgangatho wamandla wombhobho wensimbi, njenge-L290, i-290 ibhekisela kumandla amancinci okuvelisa umbhobho we-290MPa) kunye nebakala lensimbi (okanye ibakala, njenge-X42, apho I-42 imele ubuncinci bamandla okuvelisa okanye isangqa esiphakamileyo Ubuncinci amandla okuvelisa umbhobho wensimbi (kwi-psi) ifana neyombhobho yensimbi Iqulunqwe ngoonobumba okanye inani elixubekileyo leeleta kunye namanani abonisa izinga lamandla yombhobho wensimbi, kwaye ibakala lensimbi lihambelana nokubunjwa kweekhemikhali zensimbi.
Iipayipi zensimbi ze-PSL2 zenziwe ngeeleta okanye inhlanganisela yeeleta kunye namanani asetyenziselwa ukuchonga umgangatho wamandla wombhobho wensimbi. Igama lensimbi (ibakala lentsimbi) lihambelana nokubunjwa kweekhemikhali zentsimbi. Ikwabandakanya unobumba omnye (R, N, Q okanye M) yenza isimamva, esibonisa isimo sokuhanjiswa. Kwi-PSL2, emva kwemeko yokuhanjiswa, kukho kwakhona ileta S (indawo yenkonzo ye-asidi) okanye i-O (indawo yenkonzo yaselwandle) ebonisa ubume benkonzo.