Ukucaciswa okujwayelekile
I-API 5Lngokuvamile ibhekisela ezingeni lokukhishwa lamapayipi ensimbi epayipi. Amapayipi ensimbi amapayipi ahlanganisa amapayipi ensimbi angenamthungo namapayipi ensimbi ashiselwe. Njengamanje, izinhlobo zamapayipi ensimbi ashiselwe ngokuvamile asetshenziswa kumapayipi kawoyela ahlanganisa ipayipi elishiselwe i-arc elishiselwe eligobile (i-SSAW), ipayipi elishiselwe i-arc elihlanganisiwe eliqondile (LSAW), kanye nepayipi elishiselwe ukumelana nogesi (ERW). Amapayipi ensimbi angenamthungo ngokuvamile akhethwa lapho ububanzi bepayipi bungaphansi kuka-152mm.
Amapayipi ensimbi ajwayelekile we-GB/T 9711-2011 wezinhlelo zokuthutha zamapayipi embonini kawoyela negesi ahlanganiswa ngokusekelweI-API 5L.
I-GB/T 9711-2011 icacisa izidingo zokukhiqiza amapayipi ensimbi angenamthungo namapayipi ensimbi ashiselwe emazingeni amabili okucaciswa komkhiqizo (PSL1 kanye ne-PSL2) asetshenziswa ezinhlelweni zokuthutha zamapayipi ezimboni zikawoyela negesi. Ngakho-ke, leli zinga lisebenza kuphela kumapayipi ensimbi angenamthungo namapayipi ensimbi ashiselwe ukuthutha uwoyela negesi, futhi akusebenzi kumapayipi ensimbi.
Ibanga lensimbi
Amabanga ensimbi eluhlaza weI-API 5Lamapayipi ensimbi afaka i-GR.B, X42, X46, X52, X56, X60, X70, X120 pipeline steel. Amamaki ensimbi ahlukene amapayipi ensimbi anezidingo ezihlukene zezinto zokusetshenziswa nokukhiqiza, kodwa okulingana nekhabhoni phakathi kwamabanga ensimbi ahlukene kulawulwa ngokuqinile.
Izinga Lekhwalithi
Esilinganisweni sepayipi lensimbi ye-API 5L, izindinganiso zekhwalithi (noma izidingo) zamapayipi ensimbi zihlukaniswa zibe i-PSL1 ne-PSL2. I-PSL isifinyezo sezinga lokucaciswa komkhiqizo.
I-PSL1 ihlinzeka ngezimfuneko zezinga lezinga lepayipi lensimbi elijwayelekile; I-PSL2 yengeza izidingo eziyisibopho zokwakheka kwamakhemikhali, ukuqina kwenotshi, izakhiwo zamandla kanye ne-NDE eyengeziwe.
Ibanga lepayipi lensimbi lepayipi lensimbi le-PSL1 (igama elibonisa izinga lamandla epayipi lensimbi, elifana ne-L290, 290 libhekisela emandleni amancane okukhiqiza omzimba wamapayipi angama-290MPa) kanye nebanga lensimbi (noma ibanga, njenge-X42, lapho I-42 imele amandla amancane esivuno noma isiyingi esiphezulu Amandla amancane okukhiqiza wepayipi yensimbi (ku-psi) afana nalawo wepayipi yensimbi Yakhiwe ngezinhlamvu noma inombolo exubile yezinhlamvu nezinombolo ezikhomba izinga lamandla wepayipi lensimbi, futhi ibanga lensimbi lihlobene nokwakheka kwamakhemikhali ensimbi.
Amapayipi ensimbi e-PSL2 akhiwe ngezinhlamvu noma inhlanganisela yezinhlamvu nezinombolo ezisetshenziselwa ukukhomba izinga lamandla lepayipi lensimbi. Igama lensimbi (ibanga lensimbi) lihlobene nokwakheka kwamakhemikhali ensimbi. Kuhlanganisa futhi uhlamvu olulodwa (R, N, Q noma M ) lwakha isijobelelo, esibonisa isimo sokudiliva. Ku-PSL2, ngemva kwesimo sokulethwa, kukhona nohlamvu S (indawo yesevisi ye-asidi) noma u-O (indawo yesevisi yasolwandle) ebonisa isimo sesevisi.