I-API 5L X65 PSL2 Sour Service LSAW Steel Pipe: Amandla okuvelisa kunye neenkcukacha zeMveliso

Inkcazo emfutshane:

I-Womic Steel inika umbhobho wentsimbi we-LSAW osemgangathweni ophezulu we-API 5L X65 PSL2 sour service LSAW wokuhambisa ioyile negesi ngokufuna kwiindawo ezixineneyo ze-H₂S (ezimuncu). I-X65 PSL2 enesiqinisekiso senkonzo yemuncu inika amandla amancinci esivuno se-450 MPa (65,300 psi) kunye nemida yobunzima obuqinileyo (≤ 85 HRB eqhelekileyo), i-low carbon equivalent (CEV ≤ 0.40%), kunye nokumelana okuqinisekisiweyo kwi-hydrogen induced cracking (HIC) kunye ne-sulfide stress cracking (SSC). Inkqubo ye-LSAW ibandakanya iindlela ze-JCOE, UOE, kunye neendlela ze-rolled plate welding, kunye nonyango olunyanzelekileyo lwe-post-weld heat treatment (PWHT) kuzo zonke iipayipi zenkonzo yemuncu nokuba ubukhulu bodonga bunjani. Ububanzi bangaphandle ukusuka kwi-219mm ukuya kwi-1,600mm (8″ – 63″), ubukhulu bodonga ukusuka kwi-6.0mm ukuya kwi-60mm, ubude ukuya kuthi ga kwi-24m. Isatifikethi sokugaywa esine-EN 10204 3.2, uvavanyo lwe-ultrasonic oluyi-100% olune-TOFD, uvavanyo lwe-hydro, iziphelo ezibekiweyo, kunye nephakheji epheleleyo yamaxwebhu enkonzo emuncu (HIC, SSC, iindlela zokuqina). Ifanelekile kwiipayipi zegesi emuncu ezinoxinzelelo oluphezulu, ukuhanjiswa kweoyile emuncu kunye negesi engaphandle kolwandle, imigca yamanzi emuncu ecociweyo, kunye nokufakwa kwegesi ene-asidi.

Ubungakanani boMbhobho weNtsimbi ye-LSAW:Ububanzi obungaphandle: 219mm – 1,600mm (8″ – 63″), Ubukhulu bodonga: 6.0mm – 60.0mm (JCOE/UOE max 50.8mm, ipleyiti eqengqelweyo max 60mm), Ubude: 6m – 18m esemgangathweni, ubude obulungiselelweyo bufikelela kwi-24m

Umbhobho weNtsimbi weLSAW oMgangatho oMgangatho kunye noBanga:I-API 5L X65 PSL2 eneemfuno ezongezelelweyo zenkonzo ye-sour ngokwe-NACE MR0175/ISO 15156; i-HIC ngokwe-NACE TM0284; i-SSC ngokwe-NACE TM0177; ikwahlangabezana nesongezelelo senkonzo ye-sour ye-DNV-OS-F101

Ukusetyenziswa kwePipe yeNtsimbi ye-LSAW:Imigca yemithwalo yegesi yendalo emuncu enoxinzelelo oluphezulu (ukuya kuthi ga kwi-15 MPa), imibhobho yeoyile emuncu emanzini anzulu, imigca yokucocwa kwamanzi emuncu kunye ne-amine, imigodi yokufaka igesi ene-asidi, imigca yokuphakamisa igesi kwiindawo ezimuncu, imibhobho yenkonzo exutyiweyo ye-CO₂-H₂S, imibhobho yokubuyisela i-sulfur

I-Womic Steel inikezela ngamaxabiso asemgangathweni aphezulu kunye namaxabiso akhuphisanayo e-API 5L X65 PSL2 sour service LSAW steel pipe, i-HIC tested line pipe, i-SSC resistant pipe, i-NACE compliant high strength pipe. Isatifikethi se-mill EN 10204 3.2, i-hydro test, i-UT/TOFD, i-PWHT, i-beveled end, i-3LPE/FBE coating iyafumaneka. Ubonelelo oluthe ngqo kwifektri kwiiprojekthi ze-sour oil kunye negesi kwihlabathi liphela.

Thumela i-imeyile kuthi Iinkcukacha zeMveliso

Iinkcukacha zeMveliso

Iithegi zeMveliso

1. I-Womic Steel: Amandla okuvelisa kunye namandla enkampani kwi-X65 Sour Service

I-Womic Steel Group isebenzisa imigca yemveliso ezinikeleyo yeepayipi ze-LSAW ezisebenza ngamandla amakhulu. Inkonzo ye-X65 sour ifuna kakhulu kune-X52 ngenxa yokuqina okuphezulu kunye neemfuno zokuqina ezingqongqo. Ulawulo oluphambili luquka:

● Ixabiso eliphantsi lekhabhoni (i-CEV ≤ 0.40%, eqhelekileyo ≤ 0.38%)

● I-sulfur ephantsi kakhulu (S ≤ 0.0015%) kunye ne-phosphorus ephantsi (P ≤ 0.015%)

● Unyango lwe-calcium lokulawula imo equkethwe (umlinganiselo we-Ca/S ≥ 1.5)

● Iipleyiti zokupholisa ezikhawulezileyo (TMCP) ukuze kufezekiswe isakhiwo se-acicular ferrite microstructure

● Unyango lobushushu emva kokuwelda (PWHT) kuzo zonke iipayipi, nokuba udonga lungakanani na ubukhulu

● Uvavanyo lobunzima obuyi-100% (i-weld, i-HAZ, i-base metal) – ithagethi ≤ 85 HRB

● Uvavanyo lwe-HIC kunye ne-SSC ngokwemigangatho ye-NACE ngaphandle kokwamkelwa kwamaqhekeza kwiiprojekthi ezininzi

Iinkqubo zemveliso: JCOE, UOE (ikhethwayo ngenxa yoxinzelelo olusezantsi olushiyekileyo), ipleyiti eqengqiweyo, zonke zine-PWHT eyimfuneko kwisithando somlilo esingaphantsi kwemoto (ubude be-12m, 600°C ± 10°C). Ukuhlolwa ngumntu wesithathu yi-SGS, BV, TÜV, DNV, ABS, okanye i-LR ukuze kufunyanwe isiqinisekiso senkonzo egcweleyo.

Umthamo wonyaka wenkonzo ye-sour X65 LSAW:Iitoni ezingama-25,000.

Ukuguquguquka kwemveliso kwiNkonzo ye-X65 Sour:

● I-JCOE: 406–1,422mm OD × 6.0–50.8mm Ubunzima × ≤ 18m

● UOE: 508–1,220mm OD × 6.0–40.0mm Ubunzima × ≤ 24m (ikhethwa kwi-muncu ngenxa yoxinzelelo oluphantsi olushiyekileyo)

● Ipleyiti eqengqekileyo: 600–1,600mm OD × 25–60mm Ubunzima × ≤ 12m

● I-PWHT ifakwa kumbhobho ngamnye (cwilisa i-600°C ± 10°C, gcina iyure e-1 ngobukhulu obuyi-25mm, upholise kancinci ≤ 200°C/hr)

2. I-API 5L X65 PSL2 Inkonzo Emuncu: Ukwakhiwa Kwezinto kunye Neempawu Zokusebenza

Kwinkonzo ye-X65 sour, ikhemistri iqinile kunePSL2 eqhelekileyo kwaye iqinile kuneX52 sour. Injongo kukufumana amandla aphezulu (isivuno se-450 MPa) ngelixa kugcinwa ukumelana okuhle kwe-HIC kunye ne-SSC.

Ukwakhiwa kweeKhemikhali (Uhlalutyo lweeLadle, iithagethi eziqhelekileyo zenkonzo emuncu):

I-elementi	Ubuninzi bePSL2 obuqhelekileyo	Ithagethi yeNkonzo yeSour ye-X65 (iWomic)
C	0.12	≤ 0.08 (eqhelekileyo yi-0.05-0.07)
Mn	1.60	≤ 1.40 (eqhelekileyo yi-1.20-1.35)
P	0.025	≤ 0.015
S	0.015	≤ 0.0015 (0.0010 eqhelekileyo)
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	Ayichazwanga ngqo	≤ 0.30 (kwi-muncu, rhoqo yi-0.15-0.25)
Ni	Ayichazwanga ngqo	≤ 0.50 (ukhetho lobushushu obuphantsi)
I-CEV	≤ 0.43	≤ 0.40 (eqhelekileyo ≤ 0.38)
I-Pcm	≤ 0.25	≤ 0.22

Unyango lweCalcium (umlinganiselo weCa/S ≥ 1.5) luqinisekisa ukufakwa kwe-globular sulfide. Ukongezwa kweMolybdenum kuphucula ukumelana ne-SSC kumanqanaba aphezulu amandla.

Iipropati zoomatshini (Emva kwe-PWHT):

Ipropati	Inkonzo ye-X65 PSL2 Sour (Womic)
Amandla Okuvelisa (umzuzu)	I-450 MPa (65,300 psi)
Amandla okuvelisa (ubuninzi)	I-570 MPa (82,700 psi)
Amandla okuThamba (umzuzu)	I-535 MPa (77,600 psi)
Ukwandiswa (umzuzu)	19%
Ubunzima (ubuninzi)-iiprojekthi ezininzi	I-HRB engama-85 (uWomic uphumelele kwi-HRB engama-78-85)
Ukuqina kwempembelelo @ -20°C (ukhetho)	≥ 27 J (eqhelekileyo yi-80-150 J)
Ukuqina kwempembelelo @ -46°C (ukhetho)	≥ 27 J (eqhelekileyo yi-60-100 J)

Uvavanyo oluyimfuneko lweNkonzo ye-X65 Sour:

● I-HIC nganye kwi-NACE TM0284 (Isisombululo A, iiyure ezingama-96)-ukwamkelwa: CLR ≤ 5%, CTR ≤ 1.5%, CSR ≤ 0.5% (iiprojekthi ezininzi zifuna u-0%)

● I-SSC nganye kwi-NACE TM0177 (Indlela A, 720h, 90% SMYS)-akukho kuqhekeka

● Ukuqina kudlula kwi-weld, i-HAZ, kunye ne-base metal (ubuninzi be-85 HRB)

● I-Charpy V-Notch kwi-0°C okanye ngaphantsi (ngesiqhelo yi-27 J min)

● I-DWTT (yokulawula ukwaphuka, ukuba ichaziwe)

3. Ukuthobela uLuhlu lweeDimensional kunye neMigangatho

Into	Inkcazo
Umgangatho	I-API 5L PSL2 ene-sugar service supplement
I-NACE	I-NACE MR0175 / ISO 15156 (uhlelo lwamva nje)
Iinkqubo zoMveliso	I-JCOE, i-UOE, ipleyiti eqengqiweyo (yonke ine-PWHT)
Uluhlu lweDayamitha yangaphandle	219mm-1,600mm (8″)-63″)
Uluhlu Lobukhulu Bodonga	6.0mm-60mm (JCOE/UOE max 50.8mm, ipleyiti eqengqelweyo max 60mm)
Uluhlu lobude	6m -Umgangatho we-18m; ukuya kuthi ga kwi-24m (UOE)
Isiphelo Sokugqiba	Isiphelo esiBeveled (BE) nge-API nganye 5L
Umphezulu Ukugqiba	I-Bare, 3LPE, 3LPP, FBE (iingubo kufuneka zibe mnandi kwaye zifanelekile)
Ukunyamezelana	I-OD: ±0.5%; Ubunzima: -0% / +15%; Ubude: +50mm / -0mm

4. Ubukhulu kunye neenkcukacha ezikhoyo - API 5L X65 PSL2 Sour Service LSAW Steel Pipe

OD (mm)	Iinketho ze-WT (mm)	Inkqubo	Ubunzima obumalunga (kg/m2)	Ubude obuqhelekileyo	Iimpawu zeNkonzo emuncu
219	6.4, 8.0, 10.0, 12.5	I-JCOE	33.6-63.6	12m	I-PWHT, i-HIC ivavanyiwe
273	8.0, 10.0, 12.5, 14.0, 16.0	I-JCOE	52.3-101.5	12m / 18m	Ubunzima ≤ 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 yongeziwe
406	10.0, 12.5, 14.0, 16.0, 19.0, 22.0	JCOE/UOE	97.7-208.4	12m / 18m	I-SSC ivavanyiwe
508	12.5, 14.0, 16.0, 19.0, 22.0, 25.4	I-UOE	152.7-302.3	12m / 18m / 24m	Indlela epheleleyo yobunzima
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% eqhelekileyo
711	16.0, 19.0, 22.0, 25.4, 28.0, 31.8	I-UOE/JCOE	274.3-532.9	12m / 18m	I-PWHT iyimfuneko
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/Eqengqiweyo	484.3-862.0	12m	I-S ephantsi (≤ 0.0015%)
1,016	25.4, 30.0, 35.0, 40.0, 45.0, 50.0	Iqengqiwe	619.9-1,191.7	12m	Inyangwe nge-Ca, i-Mo ukuya kuthi ga kwi-0.25%
1,220	30.0, 35.0, 40.0, 45.0, 50.0, 55.0	Iqengqiwe	880.9-1,577.8	12m	Amanzi anzulu amuncu

Zonke iipayipi zenkonzo ye-X65 sour zifumana i-PWHT nokuba ubukhulu bodonga bunjani na. I-UOE ikhethwa kakhulu kwiidayamitha ≤ 1,220mm ngenxa yokulawula uxinzelelo olusele kakhulu.

5. Imigangatho Eqhelekileyo Yombhobho Wenkonzo Enobumuncu Obunamandla Ophezulu

Umgangatho	Isicelo	Iimfuno zovavanyo
I-API 5L PSL2 + Isihlomelo H	Umbhobho womgca wenkonzo emuncu	I-HIC, i-SSC, ubulukhuni ≤ 90 HRB
I-NACE MR0175 / ISO 15156	Izixhobo zeendawo ze-H₂S	Imida yokuqina, ikhemistri
I-NACE TM0284	Indlela yovavanyo lwe-HIC	I-CLR, i-CTR, i-CSR
I-NACE TM0177	Indlela yovavanyo lwe-SSC (Indlela A, B, C, D)	Akukho kuqhekeka
I-DNV-OS-F101 (isongezo esimuncu)	Imibhobho emuncu engaphandle kolwandle	I-CTOD eyongezelelweyo kunye nokudinwa
I-Shell DEP 31.40.30.31	Inkonzo yamanzi anzulu	Ubunzima obuqinileyo (≤ 85 HRB)

Isishwankathelo sokusetyenziswa:Iintambo zemibhobho yegesi emuncu enoxinzelelo oluphezulu, imibhobho yeoyile emuncu emanzini anzulu, inkonzo ye-asidi engaphandle kolwandle, indawo yokuhluza amanzi emuncu, iiyunithi ze-amine, i-acid gas injection, i-CCS ene-H₂S.

6. Inkqubo yoMveliso - i-LSAW ye-X65 PSL2 Sour Service

Inkonzo ye-X65 sour ifuna iipleyiti ze-TMCP eziphambili kunye nolawulo oluqinileyo lwenkqubo.

Ukukhethwa kwepleyiti:

● Ikhabhoni ephantsi (≤ 0.08%), i-manganese ephantsi (≤ 1.40%), i-sulfur ephantsi kakhulu (≤ 0.0015%)

● Ikhalsiyam enyangiweyo (Ca/S ≥ 1.5)

● Ukongezwa kwe-Mo (0.15-0.25%) kokumelana ne-SSC

● I-TMCP enokupholisa okukhawulezileyo-isakhiwo se-ferrite esincinci

Amanyathelo Okubumba i-JCOE / UOE + Amanyathelo Athile Okumuncu:

●Ukusila komphetho -Ukuchaneka ±0.5mm, i-J bevel ukuze kungene ngcono kwi-weld.

●Ukwenziwa -I-UOE iyathandwa (uxinzelelo olusezantsi olushiyekileyo). I-JCOE yamkelekile kwiindawo ezingaphandle kolwandle.

●Ukuwelda kwe-SAW -Igalelo lobushushu ≤ 2.2 kJ/mm (ngaphantsi komgangatho). Ubushushu bokunqumlana ≤ 150°C.

●I-UT eyi-100% ene-TOFD -Ibuthathaka ngakumbi kune-UT eqhelekileyo.

●Unyango Lobushushu Emva Kokushintshwa Kwesinyithi (PWHT) -Kuyimfuneko ukuba yonke into emuncu ibe yi-X65. Nciphisa kwi-580-600°C (ubushushu obuphantsi kune-X52 ukuze uphephe ukulahlekelwa ngamandla). Bamba iyure e-1 ngobukhulu obuyi-25mm. Yipholise kwi-≤ 150°C ngeyure.

●Ukwandiswa koomatshini (UOE) -Ilinganiselwe kwi-0.5-0.8% (xa kuthelekiswa ne-1.5% kwimigangatho) ukuze kuthintelwe ukuqina komsebenzi obandayo.

●Uvavanyo lokuqina -Iiphambuka ezintathu ezipheleleyo ngombhobho ngamnye (isiseko sesinyithi, i-HAZ, umgca ophakathi we-weld). Ubuninzi yi-85 HRB.

●Uvavanyo lwe-HIC -Ngokwe-NACE TM0284 Isisombululo A, iiyure ezingama-96. Iisampulu ezivela kwiziphelo zemibhobho.

●Uvavanyo lwe-SSC -Ngokwe-NACE TM0177 Indlela A, iiyure ezingama-720 kwi-90% ye-SMYS.

Iiparameter zePWHT Furnace zeX65 Sour:

● Ubushushu: 590°C ± 10°C (ingaphantsi kune-X52 ukuze igcine amandla)

● Ixesha lokuntywila: iyure e-1 kwi-25mm nganye (ubuncinane iyure e-1)

● Izinga lokuphola: ≤ 150°C ngeyure ukusuka kwi-590°C ukuya kwi-300°C

● Ii-thermocouples ezininzi kumphezulu wepayipi

7. Ulawulo loMgangatho kunye noVavanyo lwe-X65 Sour Service LSAW

Iqonga	Uhlolo	Iikhrayitheriya zoKwamkelwa
Ipleyiti	Iikhemikhali (OES)	C ≤ 0.08, S ≤ 0.0015%, CEV ≤ 0.38, Mo 0.15-0.25%
Ipleyiti	I-Ultrasonic (i-lamination)	Akukho laminations > 3mm
Ipleyiti	Ukutsalwa + iCharpy kwi -20°C	Isivuno ≥ 450 MPa, CVN ≥ 50J
Ukuwelda	I-UT eyi-100% ene-TOFD	Akukho zimpawu > 1.6mm
Ukuwelda	I-RT (ubuncinci be-10%)	Akukho mifantu, ukungabikho kokudibana
Emva kwe-PWHT	Ubunzima (HRB)-BM, Weld, HAZ	≤ 85 HRB (indawo nganye)
Igqitywe tu	I-HIC (NACE TM0284)	I-CLR ≤ 2% (ngokuqhelekileyo yi-0%), i-CTR ≤ 1%, i-CSR ≤ 0.5%
Igqitywe tu	I-SSC (NACE TM0177 Indlela A, 720h)	Akukho kuqhekeka
Igqitywe tu	I-Charpy ku -20°C okanye ngaphantsi	≥ 27 J (min), eqhelekileyo 80-150 J
Igqitywe tu	Ukutsalwa	Isivuno yi-450-570 MPa, Ukutsalwa ≥ 535 MPa
Igqitywe tu	Uvavanyo lwe-Hydrostatic	90-100% SMYS

Iphakheji yamaxwebhu ibandakanya: Uhlobo lwe-MTC 3.2, iitshathi ze-PWHT, iimephu zobunzima, iingxelo ze-HIC kunye ne-SSC, iilog ze-UT/TOFD, izatifikethi zovavanyo lwe-hydro.

8. Izicelo eziphambili - API 5L X65 PSL2 Sour Service LSAW Steel Pipe

●Imigca yemithwalo yegesi yendalo emuncu enoxinzelelo oluphezulu -Uthumelo lomgama omde kwi-10-15 MPa kunye ne-H₂S ukuya kuthi ga kwi-50 ppm

● Imibhobho yeoyile emuncu emanzini anzulu aselunxwemeni -Imigca engaphantsi kolwandle kwiindawo ze-H₂S (uvavanyo lwe-UOE + CTOD)

● Ukuhamba kweoyile ekrwada emuncu -Imigca yoxinzelelo oluphezulu ukusuka kwiingcango zemithombo ukuya kwizibonelelo eziphakathi

● Imigca yamanzi amdaka yokucoca -I-Ammonium bisulfide kunye nenkonzo ye-H₂S (ubushushu obuphezulu)

● Iipayipi zokucoca iyunithi ye-amine -I-amine etyebileyo nengenamafutha (H₂S kunye neCO₂)

● Imithombo yokufaka igesi ene-asidi -Ukufaka kwakhona imixube ye-H₂S/CO₂ kwiindawo zokulahla inkunkuma

● Imigca yokuphakamisa igesi -Ukufakwa kwegesi emuncu ukuze kunyuswe izinto ezenziweyo

● Iipayipi zeCCS ezinokungcola kwe-H₂S -Ukubanjwa nokugcinwa kwekhabhoni apho umsinga we-CO₂ uqulethe i-H₂S

9. Ukupakishwa kunye nokuthunyelwa - Umbhobho we-LSAW weNkonzo ye-X65 Sour

Kufana nokupakishwa okuqhelekileyo kwe-LSAW okunokhuselo oluphuculweyo lwasekupheleni (izigqubuthelo zentsimbi engagqwaliyo ziyacetyiswa ukuthintela ungcoliseko). Amaxwebhu aquka idosi epheleleyo yomgangatho wenkonzo emuncu ukongeza kumaxwebhu aqhelekileyo okuthumela.

10. Iingenelo zeWomic Steel kunye neFAQ - X65 PSL2 Sour Service LSAW

Kutheni iWomic Steel isetyenziselwa iX65 Sour Service?

● Isithando somlilo se-PWHT esizinikeleyo (ubude be-12m) esinolawulo oluchanekileyo lobushushu (590°C ± 10°C)

● Uvavanyo lwe-HIC kunye ne-SSC lwangaphakathi (ilebhu evunyiweyo yi-CNAS)

● Iipleyiti ezixutywe ne-mo ukuze zikwazi ukumelana ne-SSC ephezulu

● Inkqubo ye-UOE yokunciphisa uxinzelelo olushiyekileyo (ekhethwayo kwiindawo ezinzulu)

● Kukho umntu wesithathu obone uvavanyo lwe-mur (SGS, BV, TÜV, DNV)

● Iipayipi zenkonzo ezimuncu ze-X65 ezingaphezu kwe-300 km zinikezelwa kwihlabathi liphela

Imibuzo ebuzwa qho:

Q: Yintoni umahluko phakathi kwenkonzo ye-X52 sour kunye ne-X65 sour?
A: Inkonzo ye-X65 sour ifuna amandla amaninzi. I-X65 ifuna amandla aphezulu (isivuno se-450 vs 360 MPa) ngelixa igcina imida efanayo okanye eqinileyo yobunzima (≤ 85 HRB). Oku kufuna ukongezwa kwe-Mo (0.15-0.25%), ulawulo oluqinileyo lwe-CEV (≤ 0.38% vs ≤ 0.40%), kwaye idla ngokuba nobushushu obuphantsi be-PWHT (590°C vs 600°C) ukuze kuthintelwe ukulahleka kwamandla. I-X65 idla ngokuchazwa kwiipayipi zoxinzelelo oluphezulu (> 10 MPa) kunye nokusetyenziswa kwamanzi anzulu olwandle.

Q: Ingaba i-PWHT iyimfuneko kuzo zonke iipayipi zenkonzo ye-X65 sour nokuba udonga lungakanani na ubukhulu?
A: Ewe, ngokwe-NACE MR0175 kunye nazo zonke iinkcukacha eziphambili zomsebenzisi. Nokuba kwiipayipi ze-6.4mm WT, i-PWHT iyadingeka ukuze kufezekiswe ubunzima obuyi-≤ 85 HRB kunye nokunciphisa uxinzelelo olushiyekileyo. I-Womic isebenzisa i-PWHT kwi-100% yeepayipi ze-X65 ezithambileyo.

Q: Zeziphi iindlela eziqhelekileyo zokwamkelwa kwe-HIC kwinkonzo ye-X65 sour?
A: I-NACE TM0284 ivumela i-CLR ≤ 5%, i-CTR ≤ 1.5%, i-CSR ≤ 0.5%. Nangona kunjalo, uninzi lweeprojekthi zamanzi anzulu kunye ne-high-integrity zifuna i-CLR = 0% (akukho mifantu). Iipleyiti zesalfure ezisezantsi kakhulu zeWomic (S ≤ 0.0015%) kunye nonyango lwe-calcium zifikelela kwi-CLR 0% rhoqo.

Q: Ngaba iipayipi zenkonzo ye-X65 sour zingasetyenziswa kwiindawo ezishushu kakhulu okanye kwiindawo ezishushu kakhulu?
A: Ewe, ngovavanyo olongezelelweyo lweCharpy olusebenzisa ubushushu obuphantsi. I-Womic ingabonelela ngenkonzo ye-X65 sour ngovavanyo lwempembelelo kwi--20°C, -40°C, okanye -46°C (ubuncinane be-27J). Kwinkonzo ye-arctic sour, sikwabonelela nge-DWTT (≥ 85% indawo yokucheba kubushushu bovavanyo). Qaphela ukuba ubushushu obuphantsi kunye nenkonzo ye-sour kunye zifuna uyilo olucokisekileyo lwe-alloy (ukongeza kwe-Ni, i-CEV ephantsi). Nceda unikeze ubushushu bakho bokusebenza kunye noxinzelelo oluncinci lwe-H₂S ukuze kuhlolwe ukufaneleka.

Q: Luthini uxinzelelo olupheleleyo lwe-H₂S kwinkonzo ye-X65 sour?
A: Ngokwe-NACE MR0175, i-X65 ifanelekile kwinkonzo emuncu ukuya kuthi ga kwi-0.3 psi (0.02 bar) uxinzelelo oluyinxenye lwe-H₂S. Kwiingcinezelo eziphezulu ezingaphelelanga (umz., 0.5-1.0 psi), kufuneka isiqinisekiso esongezelelweyo (i-HIC ene-pH ephantsi, i-SSC ekuxinzelelo oluphezulu). I-Womic ine-X65 efanelekileyo kwi-H₂S uxinzelelo oluyinxenye ukuya kuthi ga kwi-1.0 bar kwiiprojekthi ezithile. Nceda wabelane ngeemeko zakho zokusebenza.

Q: Lingakanani ixesha eliqhelekileyo lokunikezelwa kwenkonzo ye-X65 sour LSAW?
A: Iintsuku ezingama-80-120, kuxhomekeke ekubeni ipleyiti exutyiweyo yiMo-alloyed ifumaneka na (ixesha lokuqalisa liziiveki ezi-8-12) kunye novavanyo lweHIC/SSC (iiveki ezi-4-6). Iiodolo ezikhawulezileyo (iintsuku ezingama-60-90) zinokwenzeka ukuba iipleyiti zikho esitokhweni. Uvavanyo olubonwe ngumntu wesithathu longeza iiveki ezi-1-2.

Q: Ngaba niyaluvavanya uvavanyo lwe-CTOD kwii-sour riser ze-X65 ezikwi-offshore?
A: Ewe. Senza uvavanyo lwe-CTOD (Crack Tip Opening Displacement) ngokwe-BS 7448 okanye i-ASTM E1820 kumaqondo obushushu athile (ngesiqhelo -20°C okanye -46°C). Amaxabiso aphantsi e-CTOD: isinyithi esijijekileyo ≥ 0.25mm, i-HAZ ≥ 0.30mm. Sinikezele ngemibhobho ye-X65 eyomileyo evavanyiweyo yi-CTOD kwiiprojekthi zamanzi anzulu kwiNorth Sea nakwiGulf of Mexico.

Isalathiso seProjekthi-Umbhobho wegesi oMnandi weShelf eMantla Ntshona (eOstreliya)

Ilizwe:I-Ostreliya (eNtshona Ostreliya, eNorth West Shelf)
Imigangatho kunye neBanga:I-API 5L X65 PSL2 ene-sour service supplement ngokwe-NACE MR0175; i-CTOD eyongezelelweyo kunye neemfuno zobushushu obuphantsi
Ubukhulu kunye nobungakanani:

● OD 610mm (24″) × Ubunzima 15.9mm-Iimitha ezingama-45,000 (malunga neetoni ezingama-9,200) ezenziwe ngenkqubo ye-UOE

● OD 610mm (24″) × WT 19.0mm-Iimitha ezili-12,000 (malunga neetoni ezingama-2,800) ezenziwe ngenkqubo ye-UOE (udonga olutyebileyo lwecandelo lokuphakamisa amanzi)

● OD 813mm (32″) × Ubunzima obuyi-22.2mm-Iimitha ezingama-8,000 (malunga neetoni ezingama-3,100) ezenziwe yinkqubo ye-JCOE (icandelo lolwandle)
Isimbuku:Iimitha ezingama-65,000 (iikhilomitha ezingama-65), malunga neetoni ezili-15,100

Iinkcukacha:Ingubo yangaphandle ye-3LPP (3.5mm) yobushushu obuphezulu (95°C), iziphelo ezibengezelayo ezingama-30°/1.6mm, uvavanyo lwe-hydro kwi-18.0 MPa (uxinzelelo loyilo yi-12.5 MPa). Impembelelo yeCharpy enyanzelekileyo kwi--20°C (ubuncinci be-50J, ifikelelwe kwi-100-160J). I-CTOD kwi--20°C: isinyithi esiweldiweyo ≥ 0.25mm, i-HAZ ≥ 0.30mm (ifikelelwe kwi-0.35-0.55mm). I-HIC nge-NACE TM0284 Isisombululo A, iiyure ezingama-96-ukwamkelwa: I-CLR = 0%, i-CTR = 0%, i-CSR = 0%. I-SSC nganye kwi-NACE TM0177 Indlela A, iiyure ezingama-720 kwi-90% ye-SMYS-Akukho kuqhekeka. Ubunzima obuphezulu yi-85 HRB. I-PWHT ifakwa kuzo zonke iipayipi (cwilisa kwi-590°C ± 10°C, iiyure eziyi-1.5). I-100% UT ene-TOFD kunye ne-20% RT. Ukuhlolwa komntu wesithathu yi-DNV Australia.

Isicelo:Umbhobho wegesi emuncu othutha igesi yendalo esuka kwiindawo ezikude nolwandle (ezinomxholo we-H₂S we-15-25 ppm) ukuya kwisityalo se-LNG esiselunxwemeni. Umbhobho we-65 km uquka icandelo lamanzi angaphantsi kolwandle olunzulu (ubunzulu bamanzi yi-200-300m) kunye necandelo lamanzi angaphandle kumhlaba odlakazayo. Umbhobho usebenza kwi-95°C kunye ne-12.5 MPa.

Imingeni yoBugcisa kunye neZisombululo:

● Ubushushu obuphezulu (95°C) budibene nenkonzo emuncu -Uninzi lweepayipi zenkonzo ezimuncu zisebenza ngaphantsi kwama-80°C. Kwi-95°C, i-NACE MR0175 ibeka imida engqongqo kubunzima kunye nokukhethwa kwezinto. Iipleyiti zeMo-alloyed ezikhethiweyo zeWomic (Mo 0.20-0.25%) kwaye kusetyenziswe i-3LPP coating (polypropylene, elinganiswe kuma-120°C) endaweni ye-3LPE (elinganiselwe kuma-80°C). Ubushushu bePWHT buncitshiswe ukuya kuma-580°C ukuze kuthintelwe ukufudumeza kakhulu. Ubunzima emva kwePWHT: isiseko sesinyithi 78-82 HRB, i-weld 80-84 HRB-ngaphakathi komda.

● Imfuneko ye-HIC engenamaqhekeza -I-CLR efunekayo kumthengi = 0% (akukho mifantu ye-HIC). I-Womic isebenzise iipleyiti zesalfure ezisezantsi kakhulu (S ≤ 0.0008%) kunye nomlinganiselo we-Ca/S ongu-2.2. Emva kwe-PWHT, uvavanyo lwe-HIC kwiisampuli ezingama-20 (ezi-4 ngobushushu ngabunye) lubonise i-CLR 0%, i-CTR 0%, i-CSR 0%. Uvavanyo lwe-Microstructure lubonise kuphela ii-sulfide ze-globular (akukho MnS ende).

● Ukuqina kokuqhekeka kwe-CTOD kwi-riser yolwandle -Icandelo lokuphakamisa (12 km) lifune uvavanyo lwe-CTOD kwi--20°C. I-Womic yenze i-CTOD kwisinyithi esitshisiweyo kunye ne-HAZ. Iziphumo: isinyithi esitshisiweyo 0.40-0.55mm, i-HAZ 0.45-0.70mm (ngaphezulu kakhulu kwe-0.25mm/0.30mm). Sikwanikeze neengcebiso ezipheleleyo ze-welding procedure qualification (WPQ) zokutshixiza i-field girth.

● Ukunamathela kobushushu obuphezulu (3LPP) -Ingubo ye-3LPP ifuna i-FBE primer (epoxy) kunye nomaleko ophezulu we-polypropylene. Ingubo efakwe kwi-Womic kwindawo yokusebenzela elawulwa yimozulu. Amandla okuxobula kwi-95°C alinganiswa kwi-75 N/cm (ubuncinci yi-50 N/cm). Ukuqhekeka kwe-Cathodic kwi-95°C emva kweentsuku ezingama-28: ≤ i-6mm radius.

● Uthutho-mpahla oluya eNtshona Ostreliya ekude -Iipayipi zathunyelwa ukusuka eShanghai ukuya kwizibuko laseDampier (eNtshona Ostreliya) ngenqanawa enkulu (uhambo lweentsuku ezingama-28). Ngenxa yexesha lenkanyamba, ukuthunyelwa kwempahla kabini kwalibaziseka. I-Womic yalungisa ishedyuli yemveliso ukuze idibanise ukuthunyelwa kwempahla kwaye iphephe ukunciphisa umngcipheko. Zonke iitoni ezili-15,100 zaziswa ngaphakathi kwefestile yeprojekthi.

● Iziphumo:Umbhobho wegesi emuncu waqaliswa ukusebenza kwikota yokuqala ka-2025. Emva kweenyanga ezili-18 zokusebenza, ukuhlolwa kwe-in-line (ILI) akubonisi zimpawu zingaqhelekanga ezinxulumene ne-HIC okanye i-SSC. Umqhubi uvumile iWomic Steel njengomthengisi ofanelekileyo kwiiprojekthi zokwandiswa kwegesi emuncu kwixesha elizayo kwiNorth West Shelf.

Qhagamshelana:
Iwebhusayithi: www.womicsteel.com
I-imeyile: sales@womicsteel.com

Ucingo / WhatsApp / WeChat:
UVictor: +86 15575100681
UJack: +86 18390957568

Intsimbi yeWomic-Iqabane lakho elithembekileyo le-API 5L X65 PSL2 sour service LSAW steel pipes for high-pressure sour gas trunk lines, deep water offshore pipes, kunye ne-acidic service applications kwihlabathi liphela.

Ngaphambili: Umbhobho weNtsimbi we-API 5L X65 LSAW: Amandla okuvelisa kunye neenkcukacha zeMveliso

Okulandelayo: Umbhobho weNtsimbi we-API 5L X70 LSAW: Amandla okuvelisa kunye neenkcukacha zeMveliso