1. I-Womic Steel: Amandla okuvelisa kunye namandla enkampani
I-Womic Steel Group isebenzisa imigca emininzi yemveliso ye-LSAW egubungela iindlela ezintathu eziphambili zokwenza izinto ukuhlangabezana neemfuno ezahlukeneyo zeprojekthi:
● Umgca we-JCOE:Kwimithamo engama-406mm – 1,422mm (16″–56″), ubukhulu bodonga bufikelela kwi-50.8mm. I-JCO yenziwe inyathelo ngenyathelo ngokwandiswa koomatshini. Ukusebenza kakuhle, ukujikeleza okuhle.
●Umgca we-UOE:Kwiidayamitha ezingama-508mm – 1,220mm (20″–48″), ubukhulu bodonga bufikelela kwi-40mm. Ukwakha u-U emva koko ukwakha u-O kunye nokwandiswa kwe-hydraulic. Ukuchaneka okugqwesileyo kobukhulu, kukhethwa kwinkonzo yamanzi anzulu kunye neyomuncu.
●Ipleyiti Eqengqekileyo (Umthungo Omnye):Kwiidayamitha ezingama-600mm – 1,600mm (24″–63″), ubukhulu bodonga buqala kwi-25mm ukuya kwi-60mm. Ipleyiti enye iqengqelwe kwisilinda ene-weld enye ende. Ilungele ubukhulu bodonga obunzima obungaphaya komthamo we-JCOE/UOE.
●Ipleyiti Eqengqelekayo (Umthungo Ophindwe Kabini):Ukuze udonga lube nobukhulu obungaphezulu kwe-50.8mm ukuya kuthi ga kwi-80mm, kusetyenziswa iipleyiti ezimbini ezidityanisiweyo ngobude. Zisetyenziswa rhoqo kwiipayipi ze-oyile ezixineneyo ezinoxinzelelo oluphezulu.
Umthamo we-LSAW uwonke udlula iitoni ezingama-300,000 ngonyaka. I-Womic Steel ibamba i-API 5L Monogram, ISO 9001, CE PED, kwaye ihlolwa rhoqo yi-ABS, DNV, TÜV, kunye ne-BV. Irekhodi yehlabathi kumazwe angaphezu kwama-80.
Ukuguquguquka kweMveliso:
●I-JCOE: 406–1,422mm OD × 6.0–50.8mm Ubunzima × ≤ 18m
●I-UOE: 508–1,220mm OD × 6.0–40.0mm Ubunzima × ≤ 24m (ukwandiswa koomatshini kuphucula ukujikeleza)
●Ipleyiti eqengqekileyo (umthungo omnye): 600–1,600mm OD × 25–60mm Ubunzima × ≤ 12m (umlinganiselo wobunzima)
●Ipleyiti eqengqekileyo (umthungo ophindwe kabini): 1,000–2,000mm OD × 25–80mm Ubunzima × ≤ 12m
Zonke iipayipi zinokubonelelwa nge-PWHT (unyango lobushushu emva kokuwelda) ukuze zisetyenziswe eludongeni oluqinileyo okanye olumuncu.
2. I-API 5L X42: Ukwakhiwa kwezinto kunye neempawu zokusebenza
I-API 5L X42 yipayipi yomgca ophakathi enamandla anika amandla okuvelisa ubuncinci obuyi-290 MPa (42,100 psi) kunye namandla okudonsa obuncinci obuyi-415 MPa (60,200 psi). Izalisa umsantsa phakathi kwe-GR.B (245 MPa) kunye ne-X52 (360 MPa), edla ngokuchazwa kwiinkqubo zokuqokelela igesi apho iimfuno zoxinzelelo ziphakathi kodwa ziphezulu kunemigca yokusasaza eqhelekileyo.
Ulwakhiwo lweeKhemikhali (Uhlalutyo lweeLadle, ubuninzi be-% ngobunzima):
| I-elementi | I-API 5L X42 PSL1 (ubuninzi %) | I-API 5L X42 PSL2 (ubuninzi %) |
| C | 0.26 | 0.22 |
| Mn | 1.30 | 1.30 |
| P | 0.030 | 0.025 |
| S | 0.030 | 0.015 |
| Si | 0.45 | 0.45 |
| Nb+V+Ti | 0.05 | 0.05 (njengoko kuvunyelwene) |
I-PSL2 ifuna i-carbon equivalent (CEV) ≤ 0.43% ukuze kuphuculwe ukudityaniswa kwentsimbi kwiimeko zasentsimini.
Iipropati zoomatshini (Ubushushu begumbi):
| Ipropati | I-API 5L X42 PSL1 | I-API 5L X42 PSL2 |
| Amandla Okuvelisa (umzuzu) | 290 MPa (42,100 psi) | 290–495 MPa |
| Amandla okuThamba (umzuzu) | I-415 MPa (60,200 psi) | 415–655 MPa |
| Ukwandiswa (umzuzu) | 23% (kwigeyiji engama-50mm) | 22% |
| Ubunzima (ubuninzi) | Ayichazwanga ngqo | 90 HRB |
| Ukuqina kwempembelelo (umzuzu) | Ayifuneki | 27 J @ 0°C (ukhetho -20°C) |
Thelekisa ne-GR.B kunye ne-X52:
| Ibanga | I-MPa yemveliso | Isicelo esiqhelekileyo |
| GR.B | 245 | Ukusasazwa kwamanzi/igesi okuqhelekileyo |
| X42 | 290 | Ukuqokelelana kwegesi enoxinzelelo oluphakathi, ukufakwa kwamanzi |
| X52 | 360 | Imigca yesiqu enoxinzelelo oluphezulu |
3. Ukuthobela uLuhlu lweeDimensional kunye neMigangatho
| Into | Inkcazo |
| Umgangatho | I-API 5L PSL1 / PSL2 (kwakhona ne-ISO 3183 L290) |
| Iinkqubo zoMveliso | I-JCOE, i-UOE, ipleyiti eqengqekileyo (umthungo omnye/ophindwe kabini) |
| Uluhlu lweDayamitha yangaphandle | 219mm – 1,600mm (8″ – 63″) |
| Uluhlu Lobukhulu Bodonga | I-JCOE/UOE: 5.0mm – 50.8mm; Ipleyiti eqengqekileyo: 25mm – 60mm (ukuya kuthi ga kwi-80mm ngokwezifiso) |
| Uluhlu lobude | Umgangatho: 6m, 12m, 18m; Yandisiwe: ukuya kuthi ga kwi-24m (JCOE/UOE) okanye i-12m (udonga olunzima olujikeleziweyo) |
| Isiphelo Sokugqiba | Isiphelo esicacileyo (PE), Isiphelo esijijekileyo (BE) nge-API nganye 5L |
| Umphezulu Ukugqiba | Ingenanto, Ioyile, 3LPE, FBE, I-Coal Tar Epoxy, I-Liquid Epoxy |
| Ukunyamezelana | I-OD: ±0.5% okanye ±3.2mm (nokuba yeyiphi na engaphantsi); Ubunzima: -0% / +15%; Ubude: +50mm / -0mm |
4. Ubukhulu kunye neenkcukacha ezikhoyo – Ipayipi yentsimbi ye-API 5L X42 LSAW (Ubungakanani obuqhelekileyo obukhethiweyo)
| OD (mm) | Iinketho ze-WT (mm) | Inkqubo | Ubunzima obumalunga (kg/m2) | Ubude obuqhelekileyo |
| 273 | 6.4, 8.0, 10.0, 12.5 | I-JCOE | 42.1 – 80.1 | 12m |
| 324 | 6.4, 8.0, 10.0, 12.5, 14.0 | I-JCOE | 50.2 – 107.1 | 12m / 18m |
| 406 | 8.0, 10.0, 12.5, 14.0, 16.0 | JCOE/UOE | 78.5 – 153.9 | 12m / 18m |
| 508 | 8.0, 10.0, 12.5, 14.0, 16.0, 19.0 | I-UOE | 98.6 – 229.1 | 12m / 18m / 24m |
| 610 | 10.0, 12.5, 14.0, 16.0, 19.0, 22.0 | I-UOE | 148.0 – 319.1 | 12m / 18m / 24m |
| 711 | 10.0, 12.5, 14.0, 16.0, 19.0, 22.0, 25.4 | JCOE/UOE | 172.9 – 429.4 | 12m / 18m |
| 813 | 12.5, 14.0, 16.0, 19.0, 22.0, 25.4, 30.0 | I-JCOE | 246.7 – 579.8 | 12m / 18m |
| 914 | 14.0, 16.0, 19.0, 22.0, 25.4, 30.0, 35.0 | I-JCOE | 310.8 – 759.2 | 12m / 18m |
| 1,016 | 16.0, 19.0, 22.0, 25.4, 30.0, 35.0, 40.0 | I-JCOE/Eqengqiweyo | 394.6 – 963.9 | 12m |
| 1,220 | 19.0, 22.0, 25.4, 30.0, 35.0, 40.0, 45.0 | Iqengqelekile (umthungo omnye) | 563.0 – 1,304.2 | 12m |
| 1,422 | 25.4, 30.0, 35.0, 40.0, 45.0, 50.0 | Iqengqelekile (inye/iphindwe kabini) | 875.1 – 1,692.5 | 12m |
| 1,600 | 30.0, 40.0, 50.0, 60.0 | Iqengqelekile (umthungo ophindwe kabini) | 1,162 – 2,280 | 10m / 12m |
Iipayipi ezinkulu zodonga (≥ 40mm) zihlala zifuna i-PWHT ukunciphisa uxinzelelo olushiyekileyo kunye nokuhlangabezana nemida yobunzima ukuze kusebenze kakuhle.
5. Imigangatho Eqhelekileyo kunye namaBanga – Umbhobho woMgca we-LSAW kunye noMbhobho woLwakhiwo
| Umgangatho | Amanqanaba eNsimbi | Isicelo esiqhelekileyo | Inkqubo Yokwenza |
| I-API 5L PSL1/PSL2 | X42, X52, X60, X65, X70 | Ukuhanjiswa kweoyile/igesi | I-JCOE/UOE/Eqengqiweyo |
| I-ASTM A53 | GR.B | Imibhobho yoxinzelelo oluphantsi | I-JCOE |
| I-ASTM A106 | GR.B/C | Ubushushu obuphezulu | I-JCOE/Eqengqiweyo |
| EN 10217-1 | S235JR, S275JR | Iityhubhu zoxinzelelo | I-JCOE |
| EN 10219 | S355JRH, S355J2H | Amacandelo ezakhiwo | I-JCOE/Eqengqiweyo |
| I-DNV-OS-F101 | L290 (X42) | Imibhobho engaphantsi kolwandle | I-UOE |
| BS 7191 | L290 (X42) | Ulwakhiwo lwaselwandle | I-UOE/Iqengqelwe |
Isishwankathelo sokusetyenziswa:Iinethiwekhi zokuqokelela igesi, imigca yokufaka amanzi, izinyuko zolwandle, iipali zesiseko sebhulorho, imibhobho yodaka, imibhobho enzima yodonga kwiindawo zokucocisa.
6. Iinkqubo zoMveliso – i-LSAW (i-JCOE / i-UOE / iPlate eRolliweyo) yePipe yeNsimbi ye-X42
I-Womic Steel ikhetha inkqubo efanelekileyo ngokusekelwe kububanzi, ubukhulu bodonga, kunye neemfuno zepropathi yoomatshini.
Inkqubo ye-JCOE (406–1,422mm OD, 6.0–50.8mm WIT):
● Ukusika umphetho wepleyiti (i-X okanye i-J bevel)
● Ukugoba (ukugoba) imiphetho ngaphambi kokuba igobe
● Ukwakha imilo ka-J (cinezela ngenqindi)
● Ukwakheka kohlobo lwe-C (uthotho lweedayi)
● Ukwakheka komfanekiso we-O (isilinda yokugqibela)
● Ukuwelda ngeetack (ii-spot tacks ecaleni komthungo)
● I-SAW yangaphakathi (enye okanye ezininzi)
● I-Outer SAW (emva kokuvavanya ukuba kuyimfuneko)
● Ukwandiswa koomatshini (ukwanda kwe-OD eyi-1–1.5% ukuze kubekho ukujikeleza kunye nokunciphisa uxinzelelo)
● Ifanelekile kwiindlela ezininzi zokufaka iipayipi zomgca, ibhalansi elungileyo yeendleko kunye nomgangatho.
Inkqubo ye-UOE (508–1,220mm OD, 6.0–40mm WIT):
● U-press wenza ipleyiti ibe yi-U
● I-O-press ivala ibe yimo ye-cylindrical
● I-Expander (yoomatshini) ukuya kububanzi bokugqibela kunye nokujikeleza
● Ukuwelda okufana neJCOE kodwa kunomphumo ophezulu
● Ikhethwa kakhulu kwiipayipi zamanzi anzulu kunye nenkonzo emuncu ngenxa yokuba ijikelezile kakhulu (±0.2% OD) kunye noxinzelelo oluphantsi olushiyekileyo.
Ipleyiti Eqengqelekayo (Umthungo Omnye) woDonga Olunzima (600–1,600mm OD, 25–60mm WIT):
● Ipleyiti yentsimbi enye iqengqelwa kwisilinda kusetyenziswa umatshini wokugoba onemiqolo emi-3 okanye emi-4
● Umthungo we-longitudinal odityaniswe nge-SAW (i-multi-pass, edla ngokuba namacala amabini)
● Akukho kwandiswa koomatshini (ukujikelezwa kufezekiswa ngokuchaneka kokuqengqeleka)
● Ifanelekile kwiipayipi eziqinileyo zodonga apho izixhobo ze-JCOE/UOE zilinganiselweyo
● Idla ngokufuna i-PWHT (ukunciphisa uxinzelelo) ukuze kuhlangatyezwane neemfuno zobunzima ukuze kusetyenziswe i-muncu.
Ipleyiti Eqengqelekayo (I-Double Seam) Yodonga Olunzima Kakhulu / Ububanzi Obukhulu Kakhulu (1,000–2,000mm OD, 25–80mm WIT):
Iipleyiti ezimbini ziqengqelwe kwisiqingatha seesilinda zaza zadityaniswa kwimithungo emibini emide
Isetyenziswa rhoqo kwiipayipi ezininzi ezinoxinzelelo oluphezulu, iipenstocks, kunye neegumbi zesando zamanzi ezinobubanzi obukhulu.
Zonke ii-welds ze-UT kunye ne-RT zihlolwe nge-100%.
Unyango Lobushushu Emva Kokushintshwa Kwesinyithi (PWHT):Ukuba udonga lunobukhulu obungaphezulu kwe-32mm okanye lusetyenziswa njengenkonzo emuncu (H₂S), iWomic inika unyango lokunciphisa uxinzelelo kubushushu kwi-oven engaphantsi kwemoto okanye kwindawo ekufutshane isebenzisa i-induction heating. Ukuqina kulawulwa ukuya kwi-≤ 90 HRB (okanye ≤ 248 HV10).
7. Iinkqubo zoLawulo loMgangatho kunye noVavanyo lwePipe yeNsimbi ye-API 5L X42 LSAW
| Iqonga | Indlela yokuhlola | Injongo | Inkqubo Esebenzayo |
| Ipleyiti | Uhlalutyo lweeKhemikhali (OES) | Qinisekisa imida ye-X42 | Konke |
| Ipleyiti | I-Ultrasonic (Ukuhlolwa kwe-Lamination) | Fumanisa iziphene zangaphakathi | Konke |
| Ipleyiti | Ukutsalwa / Ukugoba | Ukuqinisekiswa koomatshini | Konke |
| Ngexesha lokwakheka | Ubukhulu (ububanzi, ukujiya) | Qinisekisa ukuba izinto ziyafana | Konke |
| Umthungo wokuwelda | I-UT ezenzekelayo eyi-100% (okanye i-PAUT) | Fumanisa ukungabikho kwe-fusion, i-slag, i-porosity | Konke |
| Umthungo wokuwelda | RT (indawo okanye ubude obupheleleyo xa kujongwa i-spec) | Ukuqinisekiswa komgangatho we-Weld | Konke |
| Umthungo wokuwelda | I-MPI (iinzwane kunye ne-HAZ) | Imingxunya yomphezulu | Konke |
| Umbhobho ogqityiweyo | Uvavanyo lwe-Hydrostatic (nge-API 5L nganye) | Ukunyaniseka koxinzelelo | Konke |
| Umbhobho ogqityiweyo | I-Charpy V-Notch (PSL2) | Ukuqina kobushushu obuphantsi (27J @ 0°C) | I-PSL2 kuphela |
| Umbhobho ogqityiweyo | Ukuqina (HRB/HV10) | Ukuthobela imithetho yenkonzo eyomileyo | I-PSL2 / i-mur |
| Umbhobho ogqityiweyo | Ukugoba okukhokelwayo / ukuThatyathwa | Ubuchule | Konke |
| Umbhobho ogqityiweyo | Okubonakalayo kunye nokumakisha | Imeko yomphezulu, ukulandeleka | Konke |
Ukhetho lwenkonzo ebalulekileyo:
● I-HIC nge-NACE TM0284
● I-SSC ngokwe-NACE TM0177
● Impembelelo yobushushu obuphantsi kwi -20°C, -40°C okanye -60°C
● I-DWTT (Uvavanyo lokuTyhila ngobunzima) lokulawula ukwanda kwamathambo
Imephu epheleleyo yobunzima becandelo elinqamlezileyo yodonga olutyebileyo
8. Izicelo eziphambili – Ipayipi yentsimbi ye-API 5L X42 LSAW
● Iinethiwekhi zokuqokelela igesi – ukuqokelela igesi yendalo kwiingcango zemithombo ukuya kwizityalo zokucubungula (uxinzelelo oluya kuthi ga kwi-6 MPa)
● Imigca yokuhamba kweoyile ekrwada – uthutho olufutshane ukusuka kwindawo yomthombo ukuya kwindawo eninzi
● Imigca yokufaka amanzi – ukubuyiswa kweoyile yesibini, amanzi anoxinzelelo oluphezulu (10–20 MPa)
● Ii-caissons ze-riser zeplatifomu yangaphandle – i-casing ekhuselayo ye-riser kwindawo ye-splash
● Iipayipi ze-slurry – ukuthuthwa kwe-iron ore, i-copper concentrate, ii-tailings
● Ukufakwa kweebhulorho kunye neeporti – ububanzi obukhulu, iipayiphu zodonga ezinzima zeziseko ezinzulu
● Imibhobho yeenkqubo zoshishino – indawo yokucoca kunye nemigca ye-petrochemical ephakathi yoxinzelelo
● IiPenstocks (ipleyiti enzima eqengqelekayo eludongeni) – izitishi zamandla ombane ngamanzi
9. Ukupakishwa kunye nokuthunyelwa – Ipayipi yentsimbi ye-API 5L GR.B LSAW
Ukupakisha:
● Iidayamitha ezincinci (≤ 24″): Iibhanti ezineehexagonal, intsimbi ebotshelelwe ngezikhuseli ezisemaphethelweni.
● Ububanzi obukhulu (> 24″): Imibhobho nganye, eyahlulwe yi-dunnage yomthi kunye nee-raber pads.
● Izigqubuthelo zokugqibela: Izigqubuthelo zeplastiki okanye zentsimbi ezinzima (izigqubuthelo ezibhityileyo zikhuselwe).
● Ukhuseleko lokugquma: Kwimibhobho egqunywe nge-3LPE/FBE, umaleko ngamnye wahlulwe ngeeringi zefoam ukuthintela ukugqwala ngexesha lokuthuthwa kolwandle.
Iindlela zokuthumela:
● Iinqanawa ezinkulu ezinobukhulu obungaphezulu kweetoni ezingama-500 okanye ububanzi obukhulu
● Izikhongozeli ezingama-20ft/40ft zobubanzi obuncinci (ezihlanganisiweyo)
● Iirakhi ezisicaba okanye izikhongozeli ezivulekileyo zobude obude kakhulu (ukuya kuthi ga kwi-24m)
● Zonke izinto ezithunyelweyo ziquka amaxwebhu apheleleyo: i-MTC (EN 10204 3.1 okanye 3.2), ingxelo yovavanyo lwe-hydro, iingxelo ze-UT/PAUT, isatifikethi sokugquma (ukuba siyasebenza), uluhlu lokupakisha, i-invoyisi yorhwebo, i-COO.
10. Iingenelo zeWomic Steel kunye neFAQ – API 5L X42 LSAW Steel Pipe
Kutheni iWomic Steel isetyenziswa kwi-X42 LSAW?
●Iinkqubo ezintathu ezihambelanayo (i-JCOE, i-UOE, ipleyiti eqengqelekayo) ezigubungela uluhlu olubanzi lobukhulu
●Ubungakanani bodonga obukhulu ukuya kuthi ga kwi-60mm (umthungo omnye) okanye i-80mm (umthungo ophindwe kabini) wokufaka amanzi ngoxinzelelo oluphezulu kunye nemibhobho emininzi
●Isixhobo se-PWHT sokunceda ekunciphiseni uxinzelelo kwiindonga ezinkulu kunye nemibhobho yenkonzo emuncu
●I-API 5L Monogram + CE + ukuhlolwa komntu wesithathu (SGS, BV, TÜV, DNV)
●Utshintsho olukhawulezileyo (iintsuku ezingama-30–50 eziqhelekileyo)
●Ubude obude ukuya kuthi ga kwi-24m kunciphisa ukuwelda kwe-field birth nge-30–40%
Imibuzo ebuzwa qho:
Q: Ndingakhetha nini i-UOE endaweni ye-JCOE kwi-X42?
A: I-UOE inika ukujikeleza okungcono (±0.2% vs ±0.5% kwi-JCOE) kunye noxinzelelo oluphantsi olushiyekileyo, okwenza ukuba ikhethwe kwiipayipi zamanzi anzulu (ezingaphantsi kolwandle) kunye nenkonzo emuncu apho uzinzo olulinganayo phantsi koxinzelelo lwangaphandle lubalulekile. I-JCOE ixabisa kancinci kwiiprojekthi ezininzi zaselunxwemeni.
Q: Ngaba ungayenza ipayipi yodonga enzima ye-X42 ngaphaya kwe-50mm?
A: Ewe. Ubukhulu bodonga ukusuka kwi-50mm ukuya kwi-60mm, sisebenzisa umthungo omnye wepleyiti egoqwe nge-PWHT. Kwi-60–80mm, umthungo ophindwe kabini. Ezi zihlala zisetyenziselwa imigca yokufaka amanzi kwi-20–30 MPa okanye kwi-hydroelectric penstocks.
Q: Yintoni umahluko phakathi kwePSL1 kunye nePSL2 kwiX42?
A: I-PSL2 inemida eqinileyo ye-C, P, S, i-Charpy impact enyanzelekileyo (27J @ 0°C), ubunzima obukhulu be-90 HRB, kwaye ifuna i-NDT engaphezulu. Kwimigca yokuqokelela igesi enokuba namaqondo obushushu aphantsi okanye ii-H₂S traces, kucetyiswa i-PSL2.
Q: Ngaba ninika inkonzo emuncu i-X42?
A: Ewe. Sibonelela nge-X42 PSL2 ngovavanyo lwe-HIC (NACE TM0284) kunye ne-SSC (NACE TM0177). Iikhrayitheriya zokwamkelwa eziqhelekileyo: CLR ≤ 5%, CTR ≤ 1.5%, CSR ≤ 0.5%. Sibonelele ngenkonzo emuncu ye-X42 kwiiprojekthi zoMbindi Mpuma kunye neNtshona Afrika.
Q: Uqinisekisa njani umgangatho we-weld kwiipayipi zodonga oluqinileyo (40–60mm)?
A: Sisebenzisa i-multi-pass SAW enolawulo oluchanekileyo lokufaka ubushushu, ukujonga ubushushu phakathi kwe-interpass, kunye ne-100% automated UT ene-time-of-flight diffraction (TOFD) yokuvavanya i-volumetric. I-PWHT isetyenziswa ukunciphisa uxinzelelo olushiyekileyo.
Isalathiso seProjekthi – Inethiwekhi yokuHlanganisa iGesi yendalo eNtshona Afrika
Ilizwe:INigeria (ummandla weNiger Delta)
Imigangatho kunye neBanga:I-API 5L X42 PSL2 (inkonzo emuncu, ivavanyiwe yi-HIC)
Ubukhulu kunye nobungakanani:
OD 508mm (20″) × Ubunzima 11.9mm – 12,000 yeemitha (malunga neetoni ezili-1,800) ezenziwe yinkqubo ye-JCOE
OD 762mm (30″) × Ubunzima 19.0mm – 3,500 yeemitha (malunga neetoni eziyi-1,550) ezenziwe ngepleyiti eqengqekileyo ene-PWHT
Iinkcukacha:Ingubo yangaphandle ye-3LPE (ubude obupheleleyo be-2.8mm), iziphelo ezibengezelayo ziyi-30° / 1.6mm ubuso beengcambu, uvavanyo lwe-hydro kwi-8.5 MPa (uxinzelelo loyilo yi-6.4 MPa). Impembelelo yeCharpy enyanzelekileyo kwi-0°C (ubuncinci be-27J, ifikelelwe kwi-65–90J). I-HIC nge-NACE TM0284 Isisombululo A, iiyure ezingama-96 – iikhrayitheriya zokwamkelwa: I-CLR ≤ 5%, i-CTR ≤ 1.5%, i-CSR ≤ 0.5%.
Isicelo:Ukuqokelelana kwegesi yendalo ukusuka kwiingcango ezintandathu ukuya kwindawo yokucubungula embindini kwindawo enamanzi eNiger Delta. Umbhobho wodonga onzima oyi-30 intshi wasetyenziselwa intloko ephambili enqumla icandelo lemanzi eliyi-1.2km, ngelixa imibhobho ye-JCOE eyi-20 intshi yayisebenza njengemigca yamasebe.
Imingeni yoBugcisa kunye neZisombululo:
●Indawo yokuwela amanzi enombhobho onzima eludongeni– Iipayipi ezingama-30″ × 19.0mm (malunga ne-355 kg/m) kwafuneka zifakwe phezu kwedama elinodongwe oluthambileyo kakhulu. Iibhari zesiqhelo ezibekwe phantsi azikwazanga ukufikelela kwindawo leyo. I-Womic Steel inikezele ngeepayipi ezineejoyinti ezinde kakhulu (18m endaweni ye-12m eqhelekileyo) ukunciphisa inani lee-welds ze-field girth nge-33%, nto leyo enciphisa ukuwelda kwindawo leyo kwiimeko ezinzima. Sikwanikeze neengcebiso ezineenkcukacha zokuphakamisa nokuphatha kubandakanya isithuba se-spreader beam.
●Ukuthobela imithetho yenkonzo engeyiyo (i-H₂S ikhona)– Igesi enxulumene nayo yayine-30 ppm H₂S. I-Womic yenze uvavanyo lwe-HIC kuzo zombini iipayipi ze-20″ JCOE kunye ne-30″ rolled plate. Zonke iisampulu zipasiswe nge-CLR 0%, CTR 0%, CSR 0%. Kwipayipi ye-30″ (19mm WT), umthengi wayefuna ubunzima obungaphantsi kwe-85 HRB (obuqinileyo kune-API 5L's 90 HRB). I-Womic ifake ubushushu be-induction basekhaya kumthungo we-weld ukuqinisekisa ubunzima obufanayo. Iziphumo: i-base metal 78–82 HRB, i-weld 80–85 HRB.
● Ukunamathela kwe-3LPE yokugquma kumswakama ophezulu– Ukufakelwa kwesanti kuthetha ukuba imibhobho iya kuntywiliselwa emanzini kangangeeveki ngaphambi kokuba ibuyele emanzini. I-3LPE esemgangathweni inokuqhekeka kwi-cathodic ukuba ukufuma kokusetyenziswa akulawuleki. I-Womic ifake i-coating kwindawo yokusebenzela elawulwa yimozulu (ubuninzi be-60% RH) kwaye yenze i-100% yokubhaqwa ngexesha leholide kwi-5kV. Amandla e-peel avavanyiweyo kwi-25°C anike i->200 N/cm, engaphezulu kakhulu kwemfuneko ye-ISO 21809 ye-100 N/cm.
●Uthutho oluya kwindawo ekude– Iipayipi zathunyelwa ukusuka eShanghai ukuya eTin Can Island Port, eLagos, zaza zathunyelwa ngeelori ezingama-380km ukuya kwindawo yaseNiger Delta. Iimeko zendlela zazimbi kakhulu kwaye zinobunzima obulinganiselweyo. IWomic yayila isicwangciso sokuthunyelwa kwempahla isebenzisa ubude obuqhelekileyo be-12m kwiipayipi ezingama-20″ (ezihlanganisiweyo) kunye neejoyinti ezilinganayo ze-18m kwiipayipi ezingama-30″ kwiitreyila ezineemoto zomkhweli. Akukho monakalo okanye ukugoba okwenzekileyo ngexesha lohambo.
● Iziphumo:Inethiwekhi yokuqokelela igesi yaqaliswa ukusebenza kwikota yokuqala ka-2024. Zonke iitoni ezili-1,550 zepayipi engama-30″ kunye neetoni ezili-1,800 zepayipi engama-20″ zadlula kuvavanyo lwesithathu yi-SGS Nigeria. Umthengi uxele ukuba akukho ziphene ze-weld ngexesha lokuwelda kwe-field girth, okubangelwa yi-bevel geometry ehambelanayo kunye nolawulo lwe-ovality (≤ 0.3% kwimibhobho ye-JCOE, ≤ 0.5% kwimibhobho yeplate eqengqelekayo). I-Womic Steel ngoku idweliswe njengomthengisi ovunyiweyo wokwandiswa kwemibhobho yexesha elizayo yomthengi.
Qhagamshelana:
Iwebhusayithi: www.womicsteel.com
I-imeyile: sales@womicsteel.com
Ucingo / WhatsApp / WeChat:
UVictor: +86 15575100681
UJack: +86 18390957568
I-Womic Steel – Iqabane lakho elithembekileyo lemibhobho ye-API 5L X42 LSAW yokuqokelela igesi enoxinzelelo oluphakathi, ukujova amanzi, kunye nezicelo zenkonzo emuncu.
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