1. I-Womic Steel: Amakhono Okukhiqiza kanye Namandla Enkampani Yesevisi E-X65 Sour
I-Womic Steel Group isebenzisa imigqa yokukhiqiza ezinikele yamapayipi e-LSAW anamandla aphezulu. Isevisi ye-X65 sour inzima kakhulu kune-X52 ngenxa yamandla aphezulu kanye nezidingo zokuqina eziqinile. Izilawuli ezibalulekile zifaka:
● Okulingana nekhabhoni ephansi (i-CEV ≤ 0.40%, evamile ≤ 0.38%)
● I-sulfur ephansi kakhulu (S ≤ 0.0015%) kanye ne-phosphorus ephansi (P ≤ 0.015%)
● Ukwelashwa nge-calcium yokulawula ukuma kokufakwa (isilinganiso se-Ca/S ≥ 1.5)
● Amapuleti okupholisa asheshayo (TMCP) ukuze kufezwe isakhiwo esincane se-ferrite esithambile
● Ukwelashwa kokushisa ngemva kokushiswa (PWHT) kwawo wonke amapayipi, kungakhathaliseki ukuthi udonga lubanzi kangakanani
● Ukuhlolwa kobulukhuni okungu-100% (ukushisela, i-HAZ, insimbi eyisisekelo) – okuqondiwe ≤ 85 HRB
● Ukuhlolwa kwe-HIC kanye ne-SSC ngokwezindinganiso ze-NACE ngaphandle kokwamukelwa kwezinkinga kumaphrojekthi amaningi
Izinqubo zokukhiqiza: I-JCOE, i-UOE (ekhethwayo ngenxa yokucindezeleka okusele okuphansi), ipuleti eligoqiwe, konke kune-PWHT ephoqelekile esithandweni semoto esingaphansi (ubude bamamitha ayi-12, 600°C ± 10°C). Ukuhlolwa kweqembu lesithathu yi-SGS, BV, TÜV, DNV, ABS, noma i-LR ukuze kuqinisekiswe isevisi egcwele.
Umthamo wonyaka wesevisi ye-sour X65 LSAW:Amathani angu-25,000.
Ukuvumelana Nokuguquguquka Kokukhiqiza Kwesevisi E-X65 Sour:
● I-JCOE: 406–1,422mm OD × 6.0–50.8mm Isisindo × ≤ 18m
● I-UOE: 508–1,220mm OD × 6.0–40.0mm WIT × ≤ 24m (kuthandwa kakhulu uma kumanzi ngenxa yokucindezeleka okuphansi okusele)
● Ipuleti eligoqiwe: 600–1,600mm OD × 25–60mm WIT × ≤ 12m
● I-PWHT ifakwa kuwo wonke amapayipi (cwilisa ku-600°C ± 10°C, bamba ihora eli-1 ngobukhulu obungu-25mm, uphole kancane ≤ 200°C/hr)
2. Isevisi Engamanzi ye-API 5L X65 PSL2: Izici Zokwakheka Kwezinto Nokusebenza
Ngesevisi ye-X65 sour, i-chemistry iqinile kune-PSL2 ejwayelekile futhi iqine kune-X52 sour. Umgomo uwukufinyelela amandla aphezulu (isivuno esingu-450 MPa) ngenkathi kugcinwa ukumelana okuhle kakhulu kwe-HIC kanye ne-SSC.
Ukwakheka Kwamakhemikhali (Ukuhlaziywa Kwezingilazi, imigomo ejwayelekile yesevisi emuncu):
| Isici | Ubuningi obujwayelekile be-PSL2 | I-X65 Sour Service Target (Womic) |
| C | 0.12 | ≤ 0.08 (okuvamile 0.05-0.07) |
| Mn | 1.60 | ≤ 1.40 (okuvamile 1.20-1.35) |
| P | 0.025 | ≤ 0.015 |
| S | 0.015 | ≤ 0.0015 (okuvamile okungu-0.0010) |
| Si | 0.45 | 0.20-0.35 |
| V | 0.10 | ≤ 0.06 |
| Nb | 0.05 | 0.04-0.07 |
| Ti | 0.04 | ≤ 0.025 |
| Mo | Akucacisiwe | ≤ 0.30 (komuncu, ngokuvamile 0.15-0.25) |
| Ni | Akucacisiwe | ≤ 0.50 (ongakukhetha uma izinga lokushisa liphansi) |
| I-CEV | ≤ 0.43 | ≤ 0.40 (okuvamile ≤ 0.38) |
| I-Pcm | ≤ 0.25 | ≤ 0.22 |
Ukwelashwa nge-calcium (isilinganiso se-Ca/S ≥ 1.5) kuqinisekisa ukufakwa kwe-globular sulfide. Ukwengezwa kwe-molybdenum kuthuthukisa ukumelana ne-SSC emazingeni aphezulu amandla.
Izakhiwo Zemishini (Ngemva kwe-PWHT):
| Impahla | Isevisi ye-X65 PSL2 Sour (Womic) |
| Amandla Okukhiqiza (iminithi) | I-450 MPa (65,300 psi) |
| Amandla Okukhiqiza (ubuningi) | I-570 MPa (82,700 psi) |
| Amandla Okudonsa (iminithi) | 535 MPa (77,600 psi) |
| Ukwelulwa (iminithi) | 19% |
| Ubulukhuni (ubuningi)-amaphrojekthi amaningi | 85 HRB (U-Womic ufinyelele ku-78-85 HRB) |
| Ukuqina Komthelela @ -20°C (ongakukhetha) | ≥ 27 J (okuvamile 80-150 J) |
| Ukuqina Komthelela @ -46°C (ongakukhetha) | ≥ 27 J (okuvamile okungu-60-100 J) |
Ukuhlolwa Okuphoqelekile Kwesevisi Yomuncu ye-X65:
● I-HIC nge-NACE TM0284 (Isixazululo A, amahora angu-96)-ukwamukelwa: I-CLR ≤ 5%, i-CTR ≤ 1.5%, i-CSR ≤ 0.5% (amaphrojekthi amaningi adinga u-0%)
● I-SSC nge-NACE TM0177 (Indlela A, 720h, 90% SMYS)-akukho ukuqhekeka
● Ukuqina kudlula ku-weld, HAZ, kanye ne-base metal (ubuningi be-85 HRB)
● I-Charpy V-Notch ku-0°C noma ngaphansi (ngokuvamile i-27 J min)
● I-DWTT (yokulawula ukuphuka, uma kuchaziwe)
3. Ukuhambisana Nobubanzi Nokulinganisa Kwezindinganiso
| Into | Imininingwane |
| Okujwayelekile | I-API 5L PSL2 enesengezo sesevisi esimuncu |
| I-NACE | I-NACE MR0175 / ISO 15156 (uhlelo lwakamuva) |
| Izinqubo Zokukhiqiza | I-JCOE, i-UOE, ipuleti eligoqiwe (konke kune-PWHT) |
| Ububanzi Bobubanzi Bangaphandle | 219mm-1,600mm (8″)-63″) |
| Ububanzi Bokujiya Kodonga | 6.0mm-60mm (JCOE/UOE max 50.8mm, ipuleti eligoqiwe max 60mm) |
| Ibanga Lobude | 6m -Isilinganiso esingu-18m; kufika ku-24m (UOE) |
| Ukuqeda Ukuqeda | Isiphelo Esigobekile (BE) nge-API ngayinye 5L |
| Ukuqedwa Komphezulu | I-Bare, 3LPE, 3LPP, FBE (izimbozo kumele zibe mnandi futhi zifanelekile) |
| Ukubekezelelana | I-OD: ±0.5%; Isisindo: -0% / +15%; Ubude: +50mm / -0mm |
4. Ubukhulu Nemininingwane Etholakalayo - I-API 5L X65 PSL2 Sour Service LSAW Steel Pipe
| I-OD (mm) | Izinketho ze-WT (mm) | Inqubo | Isisindo Esilinganiselwayo (kg/m) | Ubude Obujwayelekile | Izici Zesevisi Emuncu |
| 219 | 6.4, 8.0, 10.0, 12.5 | I-JCOE | 33.6-63.6 | 12m | I-PWHT, i-HIC ihlolwe |
| 273 | 8.0, 10.0, 12.5, 14.0, 16.0 | I-JCOE | 52.3-101.5 | 12m / 18m | Ubulukhuni ≤ 85 HRB |
| 324 | 10.0, 12.5, 14.0, 16.0, 19.0 | I-JCOE | 77.4-142.8 | 12m / 18m | I-CEV ≤ 0.40, i-Mo ingeziwe |
| 406 | 10.0, 12.5, 14.0, 16.0, 19.0, 22.0 | I-JCOE/UOE | 97.7-208.4 | 12m / 18m | I-SSC ihlolwe |
| 508 | 12.5, 14.0, 16.0, 19.0, 22.0, 25.4 | I-UOE | 152.7-302.3 | 12m / 18m / 24m | Ukuqina okugcwele komgwaqo |
| 610 | 14.0, 16.0, 19.0, 22.0, 25.4, 28.0 | I-UOE | 205.8-401.8 | 12m / 18m / 24m | I-HIC CLR 0% ejwayelekile |
| 711 | 16.0, 19.0, 22.0, 25.4, 28.0, 31.8 | I-UOE/JCOE | 274.3-532.9 | 12m / 18m | I-PWHT iyimpoqo |
| 813 | 19.0, 22.0, 25.4, 30.0, 32.0, 35.0 | I-JCOE | 372.1-671.4 | 12m / 18m | I-NACE MR0175 |
| 914 | 22.0, 25.4, 30.0, 35.0, 38.0, 40.0 | I-JCOE/Egoqiwe | 484.3-862.0 | 12m | I-S ephansi (≤ 0.0015%) |
| 1,016 | 25.4, 30.0, 35.0, 40.0, 45.0, 50.0 | Kugoqwe | 619.9-1,191.7 | 12m | I-Ca iphathwe, i-Mo ifinyelela ku-0.25% |
| 1,220 | 30.0, 35.0, 40.0, 45.0, 50.0, 55.0 | Kugoqwe | 880.9-1,577.8 | 12m | Amanzi ajulile amuncu |
Wonke amapayipi esevisi e-X65 sour athola i-PWHT kungakhathaliseki ukuthi udonga lubanzi kangakanani. I-UOE ikhethwa kakhulu ngobukhulu obungu-≤ 1,220mm ngenxa yokulawula ukucindezeleka okusele okuphezulu.
5. Izindinganiso Ezivamile Zepayipi Lenkonzo Enomunyu Enamandla Aphezulu
| Okujwayelekile | Isicelo | Izidingo Zokuhlola |
| I-API 5L PSL2 + Isijobelelo H | Ipayipi lomugqa wesevisi emuncu | I-HIC, i-SSC, ubulukhuni ≤ 90 HRB |
| I-NACE MR0175 / ISO 15156 | Izinto zokwakha izindawo ze-H₂S | Imikhawulo ebulukhunini, i-chemistry |
| I-NACE TM0284 | Indlela yokuhlola ye-HIC | I-CLR, i-CTR, i-CSR |
| I-NACE TM0177 | Indlela yokuhlola ye-SSC (Indlela A, B, C, D) | Akukho ukuqhekeka |
| I-DNV-OS-F101 (isengezo esimuncu) | Amapayipi omuncu asogwini | I-CTOD eyengeziwe kanye nokukhathala |
| I-Shell DEP 31.40.30.31 | Isevisi yamanzi ajulile | Ubulukhuni obuqinile (≤ 85 HRB) |
Isifinyezo sokusetshenziswa:Imigqa yemithwalo yegesi emuncu enomfutho ophezulu, amapayipi kawoyela omuncu emanzini ajulile, isevisi ye-asidi yasogwini, indawo yokuhluza amanzi omuncu, amayunithi e-amine, ukujova igesi ye-asidi, i-CCS ene-H₂S.
6. Inqubo Yokukhiqiza - I-LSAW ye-X65 PSL2 Sour Service
Isevisi ye-X65 sour idinga amapuleti e-TMCP athuthukile kanye nokulawulwa kwenqubo okuqinile kakhulu.
Ukukhetha Ipuleti:
● Ikhabhoni ephansi (≤ 0.08%), i-manganese ephansi (≤ 1.40%), i-sulfur ephansi kakhulu (≤ 0.0015%)
● Ilashwe nge-calcium (Ca/S ≥ 1.5)
● Ukwengezwa kwe-Mo (0.15-0.25%) kokumelana ne-SSC
● I-TMCP enokupholisa okusheshayo-isakhiwo esincane se-ferrite esicacile
Izinyathelo Zokwenza I-JCOE / UOE + Okumuncu Okuthile:
●Ukugaya umphetho -Ukunemba ±0.5mm, i-J bevel ukuze kungene kangcono i-weld.
●Ukwakha -Kukhethwa i-UOE (ukucindezeleka okuphansi okusele). I-JCOE iyamukeleka ezindaweni ezisogwini.
●Ukushisela kwe-SAW -Okokufaka ukushisa ≤ 2.2 kJ/mm (kungaphansi kokujwayelekile). Izinga lokushisa eliphakathi nendawo ≤ 150°C.
●I-UT engu-100% ene-TOFD -Izwela kakhulu kune-UT ejwayelekile.
●Ukwelashwa Kokushisa Ngemva Kokushiswa (PWHT) -Kuphoqelekile kuyo yonke isevisi emuncu X65. Cwilisa ku-580-600°C (izinga lokushisa eliphansi kune-X52 ukuze ugweme ukulahlekelwa amandla). Bamba ihora eli-1 ngobukhulu obungu-25mm. Faka isithando somlilo ku-≤ 150°C ngehora.
●Ukwandiswa kwemishini (UOE) -Kunqunyelwe ku-0.5-0.8% (uma kuqhathaniswa no-1.5% ngokwejwayelekile) ukuze kugwenywe ukuqina komsebenzi obandayo.
●Ukuhlolwa kokuqina -Imizila emithathu egcwele ngepayipi ngalinye (insimbi eyisisekelo, i-HAZ, umugqa ophakathi nendawo wokushisela). Ubuningi obungu-85 HRB.
●Ukuhlolwa kwe-HIC -Ngokwe-NACE TM0284 Isixazululo A, amahora angu-96. Amasampula avela emaphethelweni epayipi.
●Ukuhlolwa kwe-SSC -Ngokwe-NACE TM0177 Indlela A, amahora angu-720 ku-90% SMYS.
Amapharamitha e-PWHT Furnace e-X65 Sour:
● Izinga lokushisa: 590°C ± 10°C (liphansi kune-X52 ukuze ligcine amandla)
● Isikhathi sokucwilisa: ihora eli-1 ngama-25mm (ubuncane ihora eli-1)
● Izinga lokupholisa: ≤ 150°C ngehora kusukela ku-590°C kuya ku-300°C
● Ama-thermocouple amaningi ebusweni bepayipi
7. Ukulawulwa Kwekhwalithi Nokuhlolwa Kwe-X65 Sour Service LSAW
| Isiteji | Ukuhlolwa | Izindlela Zokwamukela |
| Ipuleti | Amakhemikhali (OES) | C ≤ 0.08, S ≤ 0.0015%, CEV ≤ 0.38, Mo 0.15-0.25% |
| Ipuleti | I-Ultrasonic (i-lamination) | Azikho izingqimba > 3mm |
| Ipuleti | Ukuthamba + i-Charpy ku--20°C | Isivuno ≥ 450 MPa, CVN ≥ 50J |
| Ukushisela | I-UT engu-100% ene-TOFD | Azikho izinkomba > 1.6mm |
| Ukushisela | I-RT (ubuncane obungu-10%) | Akukho mifantu, ukuntuleka kokuhlangana |
| Ngemuva kwe-PWHT | Ubulukhuni (HRB)-BM, Weld, HAZ | ≤ 85 HRB (indawo ngayinye) |
| Kuqediwe | I-HIC (NACE TM0284) | I-CLR ≤ 2% (ngokuvamile i-0%), i-CTR ≤ 1%, i-CSR ≤ 0.5% |
| Kuqediwe | I-SSC (NACE TM0177 Indlela A, amahora angu-720) | Akukho ukuqhekeka |
| Kuqediwe | I-Charpy ku--20°C noma ngaphansi | ≥ 27 J (min), okujwayelekile okungu-80-150 J |
| Kuqediwe | Ukuthamba | Isivuno esingu-450-570 MPa, Ukuthambekela ≥ 535 MPa |
| Kuqediwe | Ukuhlolwa Kwamanzi | 90-100% SMYS |
Iphakheji yamadokhumenti ihlanganisa: Uhlobo lwe-MTC 3.2, amashadi e-PWHT, amamephu obunzima, imibiko ye-HIC kanye ne-SSC, amalogi e-UT/TOFD, izitifiketi zokuhlolwa kwamanzi.
8. Izicelo Eziyinhloko - I-API 5L X65 PSL2 Insizakalo Emuncu Ipayipi Lensimbi le-LSAW
●Imigqa yemithwalo yegesi yemvelo emuncu enomfutho ophezulu -Ukudluliselwa kwebanga elide ku-10-15 MPa nge-H₂S kufika ku-50 ppm
● Amapayipi kawoyela omuncu ogwini olujulile -Imigqa yangaphansi kolwandle ezindaweni ze-H₂S (ukuhlolwa kwe-UOE + CTOD)
● Ukugeleza kukawoyela ongahluziwe omuncu -Imigqa yokucindezela okuphezulu esuka ezindlini zomthombo wemithombo iye ezikhungweni eziphakathi
● Imizila yamanzi acwengekile -I-Ammonium bisulfide kanye nensizakalo ye-H₂S (izinga lokushisa eliphezulu)
● Amapayipi okwelapha iyunithi ye-amine -I-amine ecebile nengenamafutha (i-H₂S ne-CO₂)
● Imithombo yokujova igesi ene-asidi -Ukufaka kabusha izingxube ze-H₂S/CO₂ ezindaweni zokulahla
● Izintambo zokuphakamisa igesi -Ukufakwa kwegesi emuncu ukuze kuphakanyiswe okwenziwe
● Amapayipi e-CCS anokungcola kwe-H₂S -Ukubanjwa nokugcinwa kwekhabhoni lapho umfudlana we-CO₂ uqukethe i-H₂S
9. Ukupakisha Nokuthumela - Ipayipi Le-LSAW Lesevisi Engamanzi ye-X65
Kufana nokupakishwa okujwayelekile kwe-LSAW okunesivikelo esithuthukisiwe ekugcineni (izivalo zensimbi engagqwali zinconywa ukugwema ukungcola). Imibhalo ifaka idokhumenti ephelele yekhwalithi yesevisi emuncu ngaphezu kwamadokhumenti okuthumela ajwayelekile.
10. Izinzuzo ze-Womic Steel kanye ne-FAQ - Isevisi ye-X65 PSL2 Sour LSAW
Kungani i-Womic Steel isetshenziswa njenge-X65 Sour Service?
● Isithando somlilo se-PWHT esinikezelwe (ubude bamamitha ayi-12) esinokulawula izinga lokushisa okunembile (590°C ± 10°C)
● Ukuhlolwa kwe-HIC kanye ne-SSC kwangaphakathi (ilebhu egunyazwe yi-CNAS)
● Amapuleti axutshwe ne-mo ukuze amelane ne-SSC ephezulu
● Inqubo ye-UOE yokucindezeleka okusele okuphansi (okungcono kakhulu emanzini ajulile anomuncu)
● Kutholakala ukuhlolwa kwe-sour okubonwe ngumuntu wesithathu (SGS, BV, TÜV, DNV)
● Amapayipi esevisi e-X65 angaphezu kwamakhilomitha angu-300 ahlinzekwa emhlabeni jikelele
Imibuzo ejwayelekile ukubuzwa:
U: Uyini umehluko phakathi kwesevisi ye-X52 sour kanye ne-X65 sour?
A: Isevisi ye-X65 sour inzima kakhulu. I-X65 idinga amandla aphezulu (isivuno esingu-450 vs 360 MPa) ngenkathi igcina imikhawulo yokuqina efanayo noma eqinile (≤ 85 HRB). Lokhu kudinga ukwengezwa kwe-Mo (0.15-0.25%), ukulawulwa kwe-CEV okuqinile (≤ 0.38% vs ≤ 0.40%), kanye nokushisa kwe-PWHT okuvame ukwehla (590°C vs 600°C) ukuze kugwenywe ukulahleka kwamandla. I-X65 ivame ukucaciswa ngamapayipi anengcindezi ephezulu (> 10 MPa) kanye nezicelo zasogwini lolwandle.
Q: Ingabe i-PWHT iyimpoqo kuwo wonke amapayipi esevisi e-X65 sour kungakhathaliseki ukuthi udonga lubanzi kangakanani?
A: Yebo, ngokwe-NACE MR0175 kanye nazo zonke izincazelo ezinkulu zomsebenzisi. Ngisho nasemapayipini angu-6.4mm WT, i-PWHT iyadingeka ukuze kufezwe ubulukhuni obungu-≤ 85 HRB kanye nokunciphisa ukucindezeleka okusele. I-Womic isebenzisa i-PWHT kumapayipi angu-100% e-sour service X65.
Q: Yiziphi izindlela ezijwayelekile zokwamukela i-HIC zesevisi ye-X65 sour?
A: I-NACE TM0284 ivumela i-CLR ≤ 5%, i-CTR ≤ 1.5%, i-CSR ≤ 0.5%. Kodwa-ke, amaphrojekthi amaningi ajulile kanye nokuqina okuphezulu adinga i-CLR = 0% (akukho mifantu). Amapuleti esibabule aphansi kakhulu e-Womic (S ≤ 0.0015%) kanye nokwelashwa nge-calcium kufinyelela i-CLR 0% njalo.
Q: Ingabe amapayipi esevisi e-X65 sour angasetshenziswa ezindaweni ezibandayo noma ezishisa kakhulu?
A: Yebo, ngokuhlolwa okwengeziwe komthelela we-Charpy okushisa okuphansi. I-Womic ingahlinzeka ngesevisi ye-X65 sour ngokuhlolwa komthelela ku--20°C, -40°C, noma -46°C (ubuncane be-27J). Ngesevisi ye-arctic sour, siphinde sinikeze i-DWTT (≥ 85% indawo yokugunda ekushiseni kokuhlola). Qaphela ukuthi izinga lokushisa eliphansi kanye nensizakalo ye-sour ndawonye kudinga ukwakheka kwe-alloy okucophelelayo (ukwengezwa kwe-Ni, i-CEV ephansi). Sicela unikeze izinga lokushisa lakho lokusebenza kanye nengcindezi engaphelele ye-H₂S ukuze kuhlolwe ukufaneleka.
U: Ingakanani ingcindezi engaphelele ye-H₂S yesevisi ye-X65 sour?
A: Ngokwe-NACE MR0175, i-X65 ifanelekela isevisi emuncu efinyelela ku-0.3 psi (0.02 bar) ukucindezela okungaphelele kwe-H₂S. Ukuze uthole ukucindezela okungaphelele okuphezulu (isb., 0.5-1.0 psi), kudingeka iziqu ezengeziwe (i-HIC ene-pH ephansi, i-SSC ekucindezelekeni okuphezulu). I-Womic ine-X65 efanelekile yokucindezela okungaphelele kwe-H₂S efika ku-1.0 bar yamaphrojekthi athile. Sicela wabelane ngezimo zakho zokusebenza.
Q: Yisiphi isikhathi esijwayelekile sokulethwa kwesevisi ye-X65 sour LSAW?
A: Izinsuku ezingu-80-120, kuye ngokutholakala kwepuleti elixutshwe ne-Mo (isikhathi sokuhola amasonto angu-8-12) kanye nokuhlolwa kwe-HIC/SSC (amasonto angu-4-6). Ama-oda asheshayo (izinsuku ezingu-60-90) kungenzeka uma amapuleti ekhona esitokweni. Ukuhlolwa kofakazi beqembu lesithathu kunezela amasonto angu-1-2.
U: Ingabe niyalunikeza ukuhlolwa kwe-CTOD kwama-sour riser e-X65 asogwini?
A: Yebo. Senza ukuhlolwa kwe-CTOD (Crack Tip Opening Displacement) ngokwe-BS 7448 noma i-ASTM E1820 emazingeni okushisa acacisiwe (ngokuvamile -20°C noma -46°C). Amanani amancane e-CTOD: insimbi ehlanganisiwe ≥ 0.25mm, i-HAZ ≥ 0.30mm. Sihlinzeke ngamapayipi e-X65 ahlolwe yi-CTOD kumaphrojekthi ajulile oLwandle oluseNyakatho naseGulf of Mexico.
Ireferensi Yephrojekthi-Ipayipi Legesi Elimuncu LaseNyakatho Ntshonalanga (e-Australia)
Izwe:I-Australia (iWestern Australia, iNorth West Shelf)
Okujwayelekile kanye Nezinga:I-API 5L X65 PSL2 enesengezo sesevisi esimuncu ngokwe-NACE MR0175; izidingo ezengeziwe ze-CTOD kanye nokushisa okuphansi
Ubukhulu kanye nobuningi:
● OD 610mm (24″) × Ubude 15.9mm-Amamitha angu-45,000 (cishe amathani angu-9,200) akhiqizwe yinqubo ye-UOE
● OD 610mm (24″) × WT 19.0mm-Amamitha ayi-12,000 (cishe amathani angu-2,800) akhiqizwe ngenqubo ye-UOE (udonga olujiyile lwesigaba se-riser)
● OD 813mm (32″) × UBUNZIMA 22.2mm-Amamitha angu-8,000 (cishe amathani angu-3,100) akhiqizwe yinqubo ye-JCOE (ingxenye yolwandle)
Isiyonke:Amamitha angu-65,000 (65 km), cishe amathani angu-15,100
Imininingwane:Isembozo sangaphandle se-3LPP (3.5mm) sokushisa okuphezulu (95°C), iziphetho ezigobile 30°/1.6mm, i-hydrotest ku-18.0 MPa (umfutho womklamo 12.5 MPa). Umthelela we-Charpy ophoqelekile ku--20°C (ubuncane be-50J, kufinyelelwe ku-100-160J). I-CTOD ku--20°C: insimbi yokushisela ≥ 0.25mm, i-HAZ ≥ 0.30mm (kufinyelelwe ku-0.35-0.55mm). I-HIC nge-NACE TM0284 Isixazululo A, amahora angu-96-ukwamukelwa: I-CLR = 0%, i-CTR = 0%, i-CSR = 0%. I-SSC nge-NACE TM0177 Indlela A, amahora angu-720 ku-90% SMYS-Akukho ukuqhekeka. Ukuqina okuphezulu okungu-85 HRB. I-PWHT ifakwa kuwo wonke amapayipi (cwilisa ku-590°C ± 10°C, amahora angu-1.5). I-100% UT ene-TOFD kanye no-20% RT. Ukuhlolwa komuntu wesithathu yi-DNV Australia.
Isicelo:Ipayipi legesi elimuncu elithutha igesi yemvelo lisuka emasimini asogwini (elinokuqukethwe kwe-H₂S okungu-15-25 ppm) liye esitshalweni se-LNG esisogwini. Ipayipi elingamakhilomitha angu-65 lihlanganisa ingxenye engaphansi kolwandle olujulile (ukujula kwamanzi okungu-200-300m) kanye nengxenye engaphandle kolwandle enhlabathini ebolile. Ipayipi lisebenza ku-95°C kanye no-12.5 MPa.
Izinselele Zobuchwepheshe Nezixazululo:
● Izinga lokushisa eliphezulu (95°C) lihlanganiswe nesevisi emuncu -Amapayipi amaningi esevisi emuncu asebenza ngaphansi kuka-80°C. Ku-95°C, i-NACE MR0175 ibeka imingcele eqinile ekuqineni nasekukhethweni kwezinto. Amapuleti e-Mo-alloyed akhethiwe e-Womic (Mo 0.20-0.25%) kanye nesembozo se-3LPP esisetshenzisiwe (i-polypropylene, esilinganiselwe ku-120°C) esikhundleni se-3LPE (elinganiselwe ku-80°C). Izinga lokushisa le-PWHT lehlisiwe laya ku-580°C ukuze kugwenywe ukufudumala ngokweqile. Ukuqina ngemva kwe-PWHT: insimbi eyisisekelo 78-82 HRB, i-weld 80-84 HRB-ngaphakathi komkhawulo.
● Imfuneko ye-HIC engenamaphutha -Iklayenti elidingekayo i-CLR = 0% (akukho mifantu ye-HIC). Amapuleti esibabule asetshenziswe yi-Womic aphansi kakhulu (S ≤ 0.0008%) ngesilinganiso se-Ca/S esingu-2.2. Ngemva kwe-PWHT, ukuhlolwa kwe-HIC kumasampula angu-20 (4 ngokushisa ngakunye) kubonise i-CLR 0%, i-CTR 0%, i-CSR 0%. Ukuhlolwa kwe-Microstructure kubonise kuphela ama-sulfide e-globular (akukho MnS ende).
● Ukuqina kokuphuka kwe-CTOD kwe-riser yolwandle -Ingxenye yokuphakamisa (12 km) idinga ukuhlolwa kwe-CTOD ku--20°C. I-Womic yenze i-CTOD kunsimbi yokushisela kanye ne-HAZ. Imiphumela: insimbi yokushisela engu-0.40-0.55mm, i-HAZ engu-0.45-0.70mm (ngaphezu kuka-0.25mm/0.30mm). Siphinde sanikeza izincomo eziphelele zenqubo yokushisela (WPQ) zokushisela i-field girth.
● Ukunamathela kokushisa okuphezulu (3LPP) -Ukufakwa kwe-3LPP kudinga i-FBE primer (epoxy) kanye ne-polypropylene ungqimba oluphezulu. Ukufakwa kwe-Womic endaweni yokusebenzela elawulwa yisimo sezulu. Amandla okuhlubula ku-95°C alinganiswa ku-75 N/cm (ubuncane obungu-50 N/cm). Ukuhlukana kwe-Cathodic ku-95°C ngemva kwezinsuku ezingu-28: ≤ irediyasi engu-6mm.
● Ukuthutha izinto eziya eNtshonalanga ye-Australia ekude -Amapayipi athunyelwa esuka eShanghai eya echwebeni laseDampier (eNtshonalanga ye-Australia) ngomkhumbi ohamba kancane (uhambo lwezinsuku ezingu-28). Ngenxa yesizini yesiphepho, ukuthunyelwa okubili kwabambezeleka. I-Womic yalungisa isimiso sokukhiqiza ukuze ihlanganise ukuthunyelwa futhi igweme ukunciphisa ijubane. Wonke amathani angu-15,100 alethwa ngaphakathi kwefasitela lephrojekthi.
● Umphumela:Ipayipi legesi elinongwe laqala ukusebenza ngo-Q1 2025. Ngemva kwezinyanga ezingu-18 zokusebenza, ukuhlolwa kwe-in-line (ILI) akubonisanga ukungalingani okuhlobene ne-HIC noma i-SSC. Umqhubi uvumile i-Womic Steel njengomhlinzeki ofanelekayo wamaphrojekthi okwandisa igesi elinongwe esikhathini esizayo eNorth West Shelf.
Xhumana:
Iwebhusayithi: www.womicsteel.com
I-imeyili: sales@womicsteel.com
Ucingo / WhatsApp / WeChat:
UVictor: +86 15575100681
UJack: +86 18390957568
Insimbi YaseWomic-Umlingani wakho othembekile wamapayipi ensimbi e-LSAW e-API 5L X65 PSL2 ahlinzeka ngezinsizakalo zokuhlanza igesi ezishisayo, amapayipi asogwini olujulile, kanye nezinhlelo zokusebenza zezinsizakalo ze-acidic emhlabeni jikelele.
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