I-API 5L X70 (L485)iwuhlobo lwepayipi lensimbi elisetshenziswa embonini kawoyela negesi kumasistimu okuthutha amapayipi, eliqanjwe ngobuncane balokhiqiza amandla angu-70,300 psi (485 MPa), futhi iqukethe womabili amafomu amapayipi angenamthungo nashiselwe futhi ihlukaniswe ngamaleveli amabili wokucaciswa komkhiqizo, i-PSL1 ne-PSL2.KuPSL1, i-X70 iyibanga eliphezulu kakhulu, kanti kuPSL2 iphinde ibe ngelinye lamabanga aphezulu epayipi lensimbi.
Ipayipi lensimbi le-API 5L X70 lifaneleka ngokukhethekile ezidingweni zebanga elide, ezokuthutha ezinomfutho omkhulu ngenxa yamandla ayo aphezulu nokumelana nokucindezela.Ukuze imelane nezingcindezi eziphakeme, ipayipi lensimbi le-X70 livamise ukuklanywa libe nezindonga eziwugqinsi ukuze kuqinisekiswe amandla anele nokuqina.
Insimbi ye-Botopingumkhiqizi ochwepheshe wepayipi lensimbi elinezindonga eziwugqinsi elinezinhlangothi ezimbili elingaphansi kwe-arc LSAW elitholakala eChina.
Indawo: Cangzhou City, Hebei Province, China;
Isamba Sotshalomali: 500 million RMB;
Indawo yefekthri: 60,000 square metres;
Amandla okukhiqiza ngonyaka: amathani angama-200,000 amapayipi ensimbi e-JCOE LSAW;
Izinsiza: Ukukhiqiza okuthuthukile kanye nemishini yokuhlola;
Ubuchwepheshe: Ukukhiqizwa kwepayipi lensimbi ye-LSAW;
Isitifiketi: I-API 5L iqinisekisiwe.
Imibandela Yokulethwa
Isimo sokulethwa isimo esifakwe ukushisa noma esicutshunguliwe seshubhu lensimbi uma selilungele ukulethwa ekhasimendeni ngemva kokukhiqiza.Isimo sokudiliva sibalulekile ukuze kuqinisekiswe ukuthi ishubhu inezakhiwo ezidingekayo zemishini kanye nobuqotho besakhiwo.
Ngokuya ngezinga le-PSL nesimo sokulethwa, i-X70 ingahlukaniswa ngale ndlela elandelayo:
I-PSL1: X70 (L485);
I-PSL2: X70Q (L485Q) kanye ne-X70M (L485M);
Izinhlamvu zesijobelelo se-PSL2 u-Q kanye no-M zimelela ngokulandelana:
Q: Kucishiwe futhi kuthukuthele;
M: I-Thermomechanical rolled noma i-thermomechanical eyakhiwe;
I-API 5L X70 Inqubo Eyamukelekayo Yokukhiqiza
Inqubo yokukhiqiza ye-X70 ihlanganisa kokubiliengenamthungo futhi eshiselweamafomu, angahlukaniswa kanje:
Kulokhu,SAWL(I-LSAW) iyinqubo evamile esetshenziswa ekukhiqizeni izinqubo ezishiselwe i-X70 futhi inenzuzo ekukhiqizeni ipayipi lensimbi enobubanzi obukhulu, enodonga oluwugqinsi.
Nakuba amapayipi ensimbi angenamthungo asabhekwa njengokukhetha okuthandwayo ngenxa yezimpawu zawo ngaphansi kwezimo ezithile ezimbi kakhulu, ububanzi obukhulu bamapayipi ensimbi angenamthungo akhiqizwa ngokuvamile bukhawulelwe ku-660 mm.Lo mkhawulo kasayizi ungaba yinkinga uma ubhekene namaphrojekthi amapayipi okuthutha amabanga amade.
Ngokuphambene, inqubo ye-LSAW iyakwazi ukukhiqiza amashubhu anobubanzi obufika ku-1,500 mm kanye nobukhulu bodonga bufika ku-80 mm.Futhi intengo ingabiza kakhulu kunensimbi engenamthungo.
I-API 5L X70 Chemical Composition
Ukwakheka Kwekhemikhali ye-PSL 1 Ipayipi eno-t ≤ 25.0 mm (0.984 in.)
Ukwakheka Kwekhemikhali ye-PSL 2 Ipayipi eno-t ≤ 25.0 mm (0.984 in.)
Ngemikhiqizo yepayipi yensimbi ye-PSL2 ehlaziywe ngeokuqukethwe kwekhabhoni okungu-≤0.12%, okulingana nekhabhoni CEpcmingabalwa kusetshenziswa ifomula elandelayo:
CEpcm= C + Si/30 + Mn/20 + Cu/20 + Ni/60 + Cr/20 + Mo/15 + V/15 + 5B
Ngemikhiqizo yepayipi yensimbi ye-PSL2 ehlaziywe ngeokuqukethwe kwekhabhoni > 0.12%, okulingana nekhabhoni CEllwingabalwa kusetshenziswa ifomula engezansi:
CEllw= C + Mn/6 + (Cr + Mo + V)/5 + (Ni +Cu)/15
Ukwakheka Kwekhemikhali no-t ＞ 25.0 mm (0.984 in.)
Izonqunywa ngokuxoxisana futhi iguqulelwe ekubunjweni okufanele ngokusekelwe ezidingweni zokwakheka kwamakhemikhali ngenhla.
I-API 5L X70 Mechanical Properties
I-Tensile Properties
PSL1 X70 Tensile Properties
Izakhiwo ze-PSL2 X70 Tensile
Qaphela: Izidingo zichazwe ngokuningiliziwe kuI-API 5L X52, engabukwa uma kudingeka.
Okunye Ukuhlolwa Kwemishini
Uhlelo olulandelayo lokuhlolaisebenza ezinhlotsheni zamapayipi ensimbi ye-SAW kuphela.
Ukuhlolwa kokugoba komhlahlandlela we-weld;
Ukuhlolwa kokuqina kwepayipi elihlanganisiwe elibandayo;
Ukuhlolwa kwe-Macro ye-seam ehlanganisiwe;
futhi kuphela ipayipi lensimbi le-PSL2: ukuhlolwa komthelela we-CVN nokuhlolwa kwe-DWT.
Izinto zokuhlola namafrikhwensi okuhlola ezinye izinhlobo zamapayipi zingatholakala kuThebula 17 no-18 wezinga le-API 5L.
Ukuhlolwa kwe-Hydrostatic
Isikhathi Sokuhlola
Bonke osayizi bamashubhu ensimbi angenamthungo nashikelwe ano-D ≤ 457 mm (18 in.):isikhathi sokuhlola ≥ 5s;
Ipayipi lensimbi elishiselwe D > 457 mm (18 in.):isikhathi sokuhlola ≥ 10s.
Imvamisa Yokuhlola
Ipayipi ngalinye lensimbifuthi ngeke kube khona ukuvuza okuvela kumshini wokushisela noma wepayipi ngesikhathi sokuhlolwa.
Izingcindezi zokuhlola
I-hydrostatic test pressure P ye-aipayipi lensimbi elingenaluthoingabalwa ngokusebenzisa ifomula.
P = 2St/D
Singcindezi ye-hoop.inani lilingana namandla amancane ashiwo epayipi lensimbi xa iphesenti, ku-MPa (psi);
tubukhulu bodonga olucacisiwe, obuvezwa ngamamilimitha (amasentimitha);
Diwububanzi obushiwo bangaphandle, obuvezwa ngamamilimitha (amayintshi).
Ukuhlola Okungonakali
Okwamashubhu e-SAWizindlela ezimbili,UT(ukuhlolwa kwe-ultrasonic) nomaRT(ukuhlolwa kwe-radiographic), kuvame ukusetshenziswa.
ET(ukuhlolwa kwe-electromagnetic) akusebenzi kumashubhu e-SAW.
Izithungo ezishiselwe kumapayipi ashiselwe amabanga ≥ L210/A kanye nobubanzi ≥ 60.3 mm (2.375 in) azohlolwa ngendlela engonakalisi ukuze kubonakale ukujiya nobude obugcwele (100 %) njengoba kucacisiwe.
Ukuhlolwa kwe-UT okungabhubhisi
Ukuhlolwa kwe-RT okungabhubhisi
Epayipini le-SAW ne-COW, amashisela kufanele ahlolwe ngezindlela zokuhlola nge-radiographic okungenani okungama-200 mm (8.0 in) kokuphela kwepayipi ngalinye.in) ekugcineni kwepayipi ngalinye kuzohlolwa ngokuhlolwa kwe-radiographic.
Ishadi Leshejuli Yepayipi le-API 5L
Ukuze kube lula ukubuka nokusebenzisa, sihlele uhlelo olufanele lwamafayela e-PDF.Ungakwazi ukulanda futhi ubuke la madokhumenti uma kudingeka.
Cacisa Ububanzi Bangaphandle Nokuqina Kodonga
Amanani amisiwe obubanzi obucacisiwe bangaphandle kanye nogqinsi olucacisiwe lwezindonga zepayipi lensimbi kunikezwaISO 4200futhiI-ASME B36.10M.
I-Dimensional Tolerances
Izidingo ze-API 5L zokubekezelelana kobukhulu zichazwe kabanziI-API 5L Ibanga B.Ukuze ugweme ukuphindaphinda, ungachofoza ifonti eluhlaza okwesibhakabhaka ukuze ubuke imininingwane efanele.
Ukukhubazeka Okujwayelekile Nokulungiswa
Kumashubhu e-SAW, amaphutha alandelayo avame ukutholakala: imiphetho ene-nibbled, ukushiswa kwe-arc, i-delamination, ukuphambuka kwejometri, izigaxa ezinzima, njll.
Ukushiyeka okutholwe ekuhlolweni okubonakalayo kuzoqinisekiswa, kuhlukaniswe, futhi kulahlwe ngale ndlela elandelayo.
a) Ukujula ≤ 0.125t, futhi akuthinti ubuncane obuvumelekile bodonga ukujiya buyonqunywa njengokushiyeka okwamukelekayo futhi kuzolahlwa ngokuvumelana nezinhlinzeko ze-C.1.
b) Amaphutha angaphansi kuka-0.125t ekujuleni angathinti ukujiya kodonga obuncane obuvumelekile kuyobhekwa njengamaphutha futhi kuyosuswa ngokulola kabusha ngokuvumelana no-C.2 noma kulahlwe ngokuvumelana no-C.3.
c) Isici esithinta ukujiya kodonga obuncane obuvunyelwe kufanele kuqashelwe njengesici futhi kuzolahlwa ngokuhambisana no-C.3.
Ukuhlonza Umbala
Uma iceliwe, umaka wombala ocishe ube ngu-50 mm (2 in.) ububanzi ungapendiwa endaweni engaphakathi yepayipi ngalinye lensimbi ukuze kube lula ukuhlukaniswa kwezinto ezihlukene.
| Ibanga lombhobho | Umbala Wopende |
| I-L320 noma i-X46 | Mnyama |
| I-L360 noma i-X52 | Okuhlaza |
| I-L390 noma i-X56 | Okuluhlaza okwesibhakabhaka |
| I-L415 noma i-X60 | Okubomvu |
| I-L450 noma i-X65 | Emhlophe |
| I-L485 noma i-X70 | Purple-violet |
| I-L555 noma i-X80 | Okuphuzi |
Ilingana nani i-X70 Steel?
ISO 3183 - L485: Lena insimbi yepayipi ngaphansi kwezindinganiso zamazwe ngamazwe futhi iyafana ngezakhiwo ne-API 5L X70.
I-CSA Z245.1 - GR 485: Leli izinga lensimbi leCanadian Standards Association lamapayipi kawoyela negesi.
EN 10208-2 - L485MB: Lena insimbi yepayipi ngaphansi kwe-European Standard yokwenziwa kwamapayipi okuthutha uwoyela negesi.
Ukugqoka
Asigcini nje ngokuhlinzeka amakhasimende ethu ngamapayipi ensimbi ekhwalithi ephezulu ye-X70 kodwa futhi sinikeza izinhlobo eziningi zezinsizakalo zokuhlanganisa ukuze kuhlangatshezwane nezidingo ezithile zamaphrojekthi ahlukene.
Izingubo zokupenda: Izembatho zikapende zendabuko zinikeza isivikelo esiyisisekelo ekonakalini futhi zifanele izindawo ezingezona ezeqisayo noma ukuvikelwa kwesikhashana.
Ukufakwa kwe-FBE: Kusetshenziswa ebusweni bepayipi lensimbi ngenqubo yokufafaza nge-electrostatic bese yelapheka ngokushisa.Lokhu kunamathela kunokumelana okuhle kwamakhemikhali nokuhuzuka futhi kulungele amapayipi angaphansi komhlaba noma angaphansi kwamanzi.
3LPE enamathela: Ihlanganisa i-epoxy coating, i-adhesive layer, kanye ne-polyethylene layer, inikeza ukumelana nokugqwala okuhle kakhulu kanye nokuvikelwa komshini kwezinhlelo eziningi zamapayipi zokuhamba ezingaphansi komhlaba.
3LPP enamathela: Ngokufanayo ne-3LPE, i-3LPP yokugqoka iqukethe izendlalelo ezintathu, kodwa isebenzisa i-polypropylene njengesendlalelo sangaphandle.Lokhu kunamathela kunokumelana nokushisa okuphezulu futhi kufanelekile ukubhobhoza ezindaweni ezinezinga lokushisa eliphezulu.
Izembatho zingakhethwa ngokusekelwe endaweni ethile yohlelo lokusebenza kanye nezidingo zepayipi ukuze kuqinisekiswe ukwethembeka nokuphepha kwamapayipi e-API 5L X70 phakathi nesevisi.
Izizathu Zokukhetha Thina Ngepayipi Lensimbi le-X70
1. Izimboni eziqinisekisiwe ze-API 5L: Izimboni zethu ziphethe isitifiketi se-API 5L, esiqinisekisa izindinganiso zekhwalithi ephezulu ukusuka emthonjeni kuya kumkhiqizo ophelile ngenzuzo yenani.
2. Izinhlobo zamapayipi amaningi: Asiyena nje umkhiqizi wamapayipi ensimbi ashiselwe kodwa futhi siyisitoko samapayipi ensimbi angenasici, futhi singanikeza izinhlobo eziningi zamapayipi ezingahlangabezana nezidingo ezithile zamaphrojekthi ahlukene.
3. Qedela amathuluzi asekelayo: Ngaphezu kwepayipi lensimbi, singaphinde sinikeze ama-flanges, izindololwane, nezinye izinto ezisekelayo, ukuhlinzeka ngezixazululo zokuthenga okukodwa zephrojekthi yakho.
4. Isevisi eyenziwe ngokwezifiso: Siyakwazi ukuhlinzeka ngezixazululo ezenziwe ngokwezifiso ngokwezidingo eziqondile zekhasimende, okuhlanganisa ukukhiqizwa nokucubungula amapayipi ensimbi anezincazelo ezikhethekile.
5. Izinkonzo ezikhethekile: Kusukela yasungulwa ngo-2014, inkampani ibambe iqhaza kumaphrojekthi wobunjiniyela futhi yaqongelela ulwazi olucebile embonini, okuyenza ikwazi ukuhlinzeka ngezinsizakalo ezikhethekile nokusekelwa.
6. Ukusabela okusheshayo nokusekelwa: Ithimba lethu lenkonzo yamakhasimende linganikeza impendulo esheshayo kanye nokusekelwa kwezobuchwepheshe okuchwepheshile ukuze uqinisekise ukuthi izinkinga zakho nezidingo zakho zixazululwa ngesikhathi.
