Iinkcukacha ezisemgangathweni
I-API 5Lngokubanzi ibhekisa kumgangatho wokusebenza kwemibhobho yentsimbi yepayipi. Imibhobho yentsimbi yepayipi iquka imibhobho yentsimbi engenamthungo kunye nemibhobho yentsimbi edibeneyo. Okwangoku, iintlobo zemibhobho yentsimbi edibeneyo esetyenziswa rhoqo kwimibhobho yeoyile ziquka umbhobho we-spiral submerged arc welded (SSAW), umbhobho we-straight seam submerged arc welded (LSAW), kunye nombhobho we-electric resistance welded (ERW). Imibhobho yentsimbi engenamthungo ikhethwa ngokubanzi xa ububanzi bombhobho bungaphantsi kwe-152mm.
Iipayipi zentsimbi ze-GB/T 9711-2011 ezisemgangathweni wesizwe zeenkqubo zothutho lwemibhobho yeshishini leoyile negesi zenziwe ngokusekelwe kwiI-API 5L.
I-GB/T 9711-2011 ichaza iimfuno zokwenziwa kwemibhobho yentsimbi engenamthungo kunye nemibhobho yentsimbi edibeneyo kumanqanaba amabini enkcazo yemveliso (i-PSL1 kunye ne-PSL2) esetyenziswa kwiinkqubo zothutho lwemibhobho ye-oyile negesi kwimizi-mveliso. Ke ngoko, lo mgangatho usebenza kuphela kwimibhobho yentsimbi engenamthungo kunye nemibhobho yentsimbi edibeneyo yothutho lwe-oyile negesi, kwaye awusebenzi kwimibhobho yesinyithi esenziwe ngentsimbi.
Ibanga lentsimbi
Amanqanaba entsimbi yezinto eziluhlazaI-API 5LIipayipi zentsimbi ziquka i-GR.B, X42, X46, X52, X56, X60, X70, X120 pipeline steel. Iindidi ezahlukeneyo zentsimbi zeepayipi zentsimbi zineemfuno ezahlukeneyo zezinto ezikrwada kunye nemveliso, kodwa ixabiso lekhabhoni elilinganayo phakathi kweendidi ezahlukeneyo zentsimbi lilawulwa ngokungqongqo.
Umgangatho oMgangatho
Kwimigangatho yepayipi yentsimbi ye-API 5L, imigangatho yomgangatho (okanye iimfuno) yepayipi yentsimbi yahlulwe yaba yi-PSL1 kunye ne-PSL2. I-PSL sisifinyezo senqanaba leenkcukacha zemveliso.
I-PSL1 ibonelela ngeemfuno zomgangatho wepayipi yentsimbi yepayipi ngokubanzi; i-PSL2 yongeza iimfuneko eziyimfuneko zokwakheka kweekhemikhali, ukuqina kwe-notch, iimpawu zokuqina kunye ne-NDE eyongezelelweyo.
Udidi lwepayipi yentsimbi yombhobho wentsimbi wePSL1 (igama elibonisa inqanaba lamandla ombhobho wentsimbi, njenge-L290, 290 libhekisa kumandla amancinci okukhupha umbhobho womzimba yi-290MPa) kwaye udidi lwentsimbi (okanye udidi, olufana ne-X42, apho i-42 imele amandla amancinci okukhupha umbhobho wombane okanye isangqa esinyukayo. Amandla amancinci okukhupha umbhobho wombane ...
Iipayipi zentsimbi zePSL2 zenziwe ngoonobumba okanye indibaniselwano yoonobumba kunye namanani asetyenziselwa ukuchonga inqanaba lamandla ombhobho wentsimbi. Igama lentsimbi (udidi lwentsimbi) linxulumene nokwakheka kweekhemikhali zentsimbi. Ikwabandakanya unobumba omnye (R, N, Q okanye M) owenza isimamva, esibonisa imeko yokuhanjiswa. KwiPSL2, emva kwemeko yokuhanjiswa, kukwakho nonobumba u-S (indawo yenkonzo ye-asidi) okanye u-O (indawo yenkonzo yaselwandle) obonisa imeko yenkonzo.