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 lamapayipi ensimbi; I-PSL2 yengeza izidingo eziyisibopho zokwakheka kwamakhemikhali, ukuqina kwenotshi, izakhiwo zamandla kanye ne-NDE eyengeziwe.
Ibanga lepayipi lensimbi le-PSL1 ipayipi lensimbi (igama elibonisa izinga lamandla lepayipi lensimbi, elifana ne-L290, 290 libhekisela kumandla amancane okukhiqiza omzimba wepayipi angama-290MPa) kanye nebanga lensimbi (noma ibanga, elifana no-X42, lapho u-42 emele amandla amancane esivuno noma indilinga ephezulu Ipayipi elincane lensimbi lilingana naleyo psi amandla ensimbi afana naleyo psi amandla ensimbi. yakhiwe ngezinhlamvu noma inombolo exubile yezinhlamvu nezinombolo ezikhomba izinga lamandla epayipi 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. Iphinde ihlanganise uhlamvu olulodwa (R, N, Q noma M ) lwakha isijobelelo, esibonisa isimo sokulethwa. Ku-PSL2, ngemva kwesimo sokulethwa, kukhona nohlamvu S (indawo yesevisi ye-asidi) noma u-O (indawo yesevisi yasolwandle) ebonisa isimo sesevisi.