1. I-Womic Steel: Amandla okuvelisa kunye namandla enkampani
I-Womic Steel Group isebenzisa imigca emininzi yemveliso ye-LSAW eyenzelwe ngokukodwa ukusetyenziswa kweendonga ezinzima kunye nobubanzi obukhulu. Imibhobho ye-ASTM A252 Grade 3 ifuna ukuguquguquka okuphezulu kunye neempawu ezihambelanayo zoomatshini zokuqhuba intsimi (ukubethela) ngaphandle kokuqhekeka.
● Umgca we-JCOE:Kwi-diameters ezingama-406mm – 1,422mm (16″–56″), ubukhulu bodonga bufikelela kwi-50.8mm. Ifanelekile kwiibhulorho nakwizakhiwo ezisisiseko.
●Umgca we-UOE:Kwi-diameters ezingama-508mm – 1,220mm (20″–48″), ubukhulu bodonga bufikelela kwi-40mm. Ivelisa iinqwaba ezingqukuva kakhulu ukuze ikwazi ukunyamezela ukuthwala izinto eziqinileyo.
●Ipleyiti Eqengqelekayo (Umthungo Omnye – Udonga Olunzima):Kwiidayamitha ezingama-600mm – 3,500mm (24″–138″), ubukhulu bodonga buqala kwi-25mm ukuya kwi-100mm. Ipleyiti enye igobile kwaye idityaniswe ngobude. Ifanelekile kwiipali ezinkulu zolwandle kunye neepali zejakethi zaselwandle.
● Ipleyiti Eqengqelekayo (Umthungo Ophindwe Kabini):Kwiidayamitha eziyi-1,200mm – 3,500mm (48″–138″), ubukhulu bodonga bufikelela kwi-100mm. Imithungo emibini emide. Isetyenziselwa iinqwaba zesiseko solwandle ezinkulu.
Umthamo opheleleyo we-LSAW udlula iitoni ezingama-300,000 ngonyaka, kunye nemveliso yeepayipi zokufaka iipilingi ezizinikeleyo ezidlula iitoni ezili-120,000 ngonyaka. I-Womic Steel ibamba i-ISO 9001, CE (EN 10219, EN 10248), kwaye inokubonelela ngokuhlolwa ngumntu wesithathu yi-SGS, BV, ABS, DNV, kunye ne-TÜV. Ngaphezulu kwe-500 km yeepayipi zokufaka iipilingi ezinikezelwa kwihlabathi liphela kwiizibuko, iibhulorho, kunye neziseko zaselunxwemeni.
Ukuguquguquka kweMveliso ye-ASTM A252 Ibanga lesi-3:
●I-JCOE: 406–1,422mm OD × 6.0–50.8mm Ubunzima × ≤ 18m
●UOE: 508–1,220mm OD × 6.0–40.0mm Ubunzima × ≤ 24m
●Ipleyiti eqengqelekayo (umthungo omnye): 600–3,500mm OD × 25–100mm Ubunzima × ≤ 18m (ukuya kuthi ga kwi-60m ngokuwelda amacandelo amaninzi)
●Ipleyiti eqengqekileyo (umthungo ophindwe kabini): 1,200–3,500mm OD × 25–100mm Ubunzima × ≤ 18m
Kubude obugqithisileyo ukuya kuthi ga kwi-60m, iWomic inokushisela amacandelo amaninzi ukusuka ekuqaleni ukuya ekupheleni kusetyenziswa ii-welds ezijikelezileyo ze-SAW ezifikelela ngokupheleleyo (ezihlolwe yi-100% UT). Ezi nqwaba zinde zinciphisa ii-splices zentsimi ngexesha lokufakwa.
2. I-ASTM A252 Ibanga lesi-3: Ukwakhiwa kwezinto kunye neempawu zokusebenza
I-ASTM A252 Grade 3 yeyona nqanaba liphezulu lamandla kwiinkcukacha ze-A252 zeepayipu zentsimbi ezidityanisiweyo nezingenamthungo. Amandla amancinci okuvelisa yi-345 MPa (50,000 psi) kunye namandla okutsalwa yi-455 MPa (66,000 psi). Ngokungafaniyo ne-API 5L, i-A252 ayinazo iindlela zokwahlulahlula ze-PSL1/PSL2 kodwa ifuna ukuguquguquka okuhle (ukunwebeka) kunye nokuhlala kakuhle kwe-weld ukuze iqhubele phambili.
Ulwakhiwo lweeKhemikhali (ubuninzi be-% ngobunzima – obuqhelekileyo kwiBanga lesi-3, i-ASTM A252 ayimiseli imida emiselweyo):
| I-elementi | Uluhlu oluQhelekileyo (Intsimbi yeWomic) |
| C | 0.20 – 0.26 |
| Mn | 0.80 – 1.30 |
| P | ≤ 0.030 |
| S | ≤ 0.030 |
| Si | 0.15 – 0.40 |
| I-CEV | ≤ 0.45 (eqhelekileyo ≤ 0.42) |
I-Womic isebenzisa amanqanaba ekhabhoni kunye ne-manganese alawulwayo ukuze ifikelele kumandla eBanga lesi-3 ngelixa igcina ukuguguleka okuhle kunye nokudityaniswa kwentsimi.
Iipropati zoomatshini (Ubushushu begumbi):
| Ipropati | I-ASTM A252 Ibanga lesi-3 |
| Amandla Okuvelisa (umzuzu) | I-345 MPa (50,000 psi) |
| Amandla okuThamba (umzuzu) | I-455 MPa (66,000 psi) |
| Ukwandiswa (umzuzu) | 20% (kwigeyiji ye-50mm) |
| Ukuqina (okuqhelekileyo) | 75-85 HRB |
Ukuthelekiswa namaBanga e-ASTM A252:
| Ibanga | I-MPa yemveliso (umzuzu) | I-MPa ethambileyo (umzuzu) | Isicelo esiqhelekileyo |
| Ibanga loku-1 | 205 | 310 | Umsebenzi olula, ukunqwabelanisa okwexeshana |
| Ibanga lesi-2 | 240 | 415 | Ukufakwa kwesiseko ngokubanzi |
| Ibanga lesi-3 | 345 | 455 | Umsebenzi onzima, isiseko esinzulu, ulwandle |
Ibanga lesi-3 linamandla angama-40% kunebanga lesi-2, nto leyo evumela ukuba kubekho iindawo ezincinci zodonga okanye umthwalo ophezulu kububanzi obufanayo.
3. Ukuthobela uLuhlu lweeDimensional kunye neMigangatho
| Into | Inkcazo |
| Umgangatho | I-ASTM A252 Ibanga lesi-3 (kwakhona neBanga loku-1, iBanga lesi-2 liyafumaneka) |
| Iinkqubo zoMveliso | I-JCOE, i-UOE, ipleyiti eqengqekileyo (umthungo omnye/ophindwe kabini) |
| Uluhlu lweDayamitha yangaphandle | 219mm – 3,500mm (8″ – 138″) |
| Uluhlu Lobukhulu Bodonga | I-JCOE/UOE: 6.0mm – 50.8mm; Ipleyiti eqengqelekayo: 25mm – 100mm |
| Uluhlu lobude | Umgangatho: 6m, 12m, 18m; Yandisiwe: ukuya kuthi ga kwi-60m (amacandelo adibeneyo) |
| Isiphelo Sokugqiba | Isiphelo esicacileyo (PE), Isiphelo esijijekileyo (BE), okanye esinomgca odibeneyo (xa uceliwe) |
| Umphezulu Ukugqiba | Ingenanto, Ifakwe ioyile, Igqunywe ngombala omnyama, I-Epoxy, I-Coal Tar Epoxy, I-Zinc (efakwe i-galvanized) |
| Ukunyamezelana | I-OD: ±0.75% okanye ±3.2mm; Ubunzima: -0% / +15%; Ubude: +100mm / -0mm yokuqokelela (ayingqongqo kangako kune-API) |
| Ukuthe tye | ≤ 0.2% yobude (obuqhelekileyo) |
4. Ubukhulu kunye neenkcukacha ezikhoyo – Umbhobho wentsimbi we-ASTM A252 Grade 3 LSAW (Ubungakanani obuqhelekileyo obukhethiweyo)
| OD (mm) | Iinketho ze-WT (mm) | Inkqubo | Ubunzima obumalunga (kg/m2) | Ubude obuqhelekileyo | Isicelo esiqhelekileyo |
| 219 | 6.4, 8.0, 10.0, 12.5 | I-JCOE | 33.6 – 63.6 | 12m / 18m | Isiseko sokwakha |
| 273 | 6.4, 8.0, 10.0, 12.5 | I-JCOE | 42.1 – 80.1 | 12m / 18m | I-pier yebhulorho |
| 324 | 8.0, 10.0, 12.5, 14.0 | I-JCOE | 62.4 – 107.1 | 12m / 18m | Ukufaka iiport piling |
| 406 | 8.0, 10.0, 12.5, 14.0, 16.0 | JCOE/UOE | 78.5 – 153.9 | 12m / 18m | Isiseko sechweba |
| 508 | 10.0, 12.5, 14.0, 16.0, 19.0 | I-UOE | 122.8 – 229.1 | 12m / 18m / 24m | Ukuqokelela izinto zaselwandle |
| 610 | 12.5, 14.0, 16.0, 19.0, 22.0 | I-UOE | 184.2 – 319.1 | 12m / 18m / 24m | Ukwandiswa kwezibuko |
| 711 | 12.5, 14.0, 16.0, 19.0, 22.0, 25.4 | JCOE/UOE | 215.3 – 429.4 | 12m / 18m | Iqonga laselunxwemeni |
| 813 | 14.0, 16.0, 19.0, 22.0, 25.4, 30.0 | I-JCOE | 275.9 – 579.8 | 12m / 18m | Isiseko esinzulu |
| 914 | 16.0, 19.0, 22.0, 25.4, 30.0, 35.0 | I-JCOE/Eqengqiweyo | 354.4 – 759.2 | 12m / 18m | Ibhulorho i-caisson |
| 1,016 | 19.0, 22.0, 25.4, 30.0, 35.0, 40.0 | Iqengqiwe | 467.1 – 963.9 | 12m / 18m | Isiphelo sendlela yolwandle |
| 1,220 | 22.0, 25.4, 30.0, 35.0, 40.0, 45.0, 50.0 | Iqengqiwe | 650.0 – 1,450.5 | 12m / 18m | Ijakethi yaselwandle |
| 1,422 | 25.4, 30.0, 35.0, 40.0, 45.0, 50.0, 60.0 | Iqengqiwe | 875.1 – 2,016.8 | 12m / 18m | Iinqwaba ezinkulu zaselwandle |
| 1,600 | 30.0, 40.0, 50.0, 60.0, 70.0, 80.0 | Iqengqelekile (kabini) | 1,162 – 3,000 | 12m / 18m | Isiseko samanzi anzulu |
| 2,000 | 40.0, 50.0, 60.0, 70.0, 80.0, 90.0 | Iqengqelekile (kabini) | 1,933 – 4,240 | 12m | Iprojekthi enkulu yezibuko |
| 2,500 | 50.0, 60.0, 70.0, 80.0, 90.0, 100.0 | Iqengqelekile (kabini) | 3,023 – 5,917 | 12m | Isakhiwo esikhulu seelwandle |
| 3,000 | 60.0, 70.0, 80.0, 90.0, 100.0 | Iqengqelekile (kabini) | 4,351 – 7,149 | 12m | Ifama yomoya engaphandle kolwandle |
Iipayipi ezinkulu zodonga (≥ 50mm) zinokufuna i-PWHT ukunciphisa uxinzelelo olushiyekileyo. Kwiindawo ezimuncu (zaselwandle), ulawulo olongezelelweyo lobunzima lungabonelelwa xa luceliwe.
5. Imigangatho Eqhelekileyo kunye namaBanga – Umbhobho Wokufaka Iipayiphu Zolwakhiwo
| Umgangatho | Amanqanaba eNsimbi | Isicelo esiqhelekileyo | Inkqubo Yokwenza |
| I-ASTM A252 | Ibanga 1, 2, 3 | Ukuqokelela iziseko, ulwandle | I-JCOE/UOE/Eqengqiweyo |
| EN 10248 | I-S235GP, i-S275GP, i-S355GP | Ukufakwa kweshiti eziqengqelekayo ezishushu (umbhobho) | Iqengqiwe |
| EN 10219 | S235JRH, S275JRH, S355JRH, S355J2H | Amacandelo angenanto adibeneyo akhiwe ngentsimbi ebandayo | I-JCOE/Eqengqiweyo |
| I-API 5L | GR.B, X42, X52 | Ukuqokelela iiplatifomu zeoyile/zegesi | JCOE/UOE |
| I-ASTM A500 | GR.B, GR.C | Ityhubhu ejikelezileyo yesakhiwo | I-JCOE |
| BS 7191 | S275, S355 | Ulwakhiwo lwaselwandle | Iqengqiwe |
Isishwankathelo sokusetyenziswa:Iziseko zebhulorho, ukubekwa kwezibuko kunye neechweba, iinqwaba zejakethi zeqonga laselwandle, iziseko ze-wind turbine, iziseko zezakhiwo ezinzulu, ii-cofferdams, iinkqubo ze-marine fender.
6. Iinkqubo zoMveliso – i-LSAW yeePile zeMbhobho zeNsimbi ze-ASTM A252 zeBanga lesi-3
I-Womic Steel ikhetha inkqubo ngokusekelwe kububanzi kunye nobukhulu bodonga. Kwizicelo zokufaka iipali, ukunyamezelana kobukhulu akungqongqo kangako kune-API 5L, kodwa ukuthembeka kwe-weld kunye nokuguquguquka kubalulekile ekuqhubeni ngehammer.
Inkqubo ye-JCOE (406–1,422mm OD, 6.0–50.8mm WIT):
● Ukugaya umphetho wepleyiti (i-bevel elula, akukho mfuneko ingqongqo ye-X okanye i-J)
● Ukwenziwa kwe-JCO ngokulandelelana
● Ukuwelda nge-SAW (ngaphakathi nangaphandle)
● Ukwandiswa koomatshini (ukhetho – imibhobho yokufaka iindonga ayifuni ukwandiswa)
● Ifanelekile kwiinqwaba zesiseko ezininzi
Inkqubo ye-UOE (508–1,220mm OD, 6.0–40mm WIT):
● Cinezela u-U kunye no-O-press ngokwandisa
● Ivelisa iinqwaba ezingqukuva kakhulu - iluncedo ekunyamezeleni ukuqhuba ngokuqinileyo kwimingxunya eyombiweyo kwangaphambili
● Isetyenziselwa iinqwaba zeplatifomu ezikude nolwandle
Ipleyiti Eqengqelekayo (I-Single Seam) Yodonga Olunzima Nobubanzi Obukhulu (600–3,500mm OD, 25–100mm WIT):
● Ukugoba okune-roll kwi-cylinder
● Ukuwelda kwe-SAW ende (udonga olunezinti ezininzi)
● Akukho kwandiswa koomatshini (ukunyamezelana kwe-ovality ±0.75% kuyamkeleka xa kufakwa iipayinti)
● Ilungele iinqwaba ezinkulu zaselwandle apho ukujikeleza kungabaluleke kangako kunomthamo womthwalo
Ipleyiti Eqengqelekayo (I-Double Seam) yobubanzi obukhulu kakhulu (1,200–3,500mm OD, 25–100mm WIT):
● Iipleyiti ezimbini zisongiwe zaza zadityaniswa kwimithungo emibini
● Umthungo ngamnye uhlolwe yi-100% UT kunye ne-RT
● Isetyenziselwa iinqwaba ezinkulu ezinobubanzi (ii-monopiles zefama yomoya ukuya kuthi ga kwi-10m OD)
Ukwenziwa KweeNqwaba Ezinde (ukuya kuthi ga kwi-60m):Kwiiprojekthi ezifuna iinqwaba ezinde kakhulu (umz., ii-monopiles zomoya olwandle), iWomic ingashisela amacandelo amaninzi angama-12m okanye angama-18m ukusuka ekuqaleni ukuya ekupheleni kusetyenziswa ii-welds ezijikelezileyo ze-SAW ezijikeleza ngokupheleleyo. I-weld nganye ejikelezayo ihlolwe yi-100% UT kunye ne-RT. Inqwaba egqityiweyo incitshiswa uxinzelelo (PWHT) ukuba ubukhulu bodonga budlula i-40mm.
7. Iinkqubo zoLawulo loMgangatho kunye noVavanyo lweMbhobho yeNsimbi ye-ASTM A252 Grade 3 LSAW
| Iqonga | Indlela yokuhlola | Injongo |
| Ipleyiti | Uhlalutyo lweeKhemikhali | Qinisekisa amanqanaba ekhabhoni/emanganese |
| Ipleyiti | Uvavanyo lokuThatha | Qinisekisa i-voiture kunye ne-tensile (≥ 345/455 MPa) |
| Ipleyiti | Uvavanyo lwe-Bend | Ukuqinisekiswa kweDuctility |
| Kwinkqubo | Imilinganiselo (OD, WT, ovality) | Qinisekisa ukuba imibhobho iyafana |
| Umthungo wokuwelda | Uvavanyo lwe-Ultrasonic (100% kwiinqwaba ezibalulekileyo) | Fumanisa iziphene zokuwelda |
| Umthungo wokuwelda | RT (indawo – 10% eqhelekileyo xa kudityaniswa iimfumba) | Ukuqinisekiswa komgangatho we-Weld |
| Umthungo wokuwelda | I-MPI (iinzwane ze-weld) | Imingxunya yomphezulu (ibalulekile kwiinqwaba eziqhutywayo) |
| Umbhobho ogqityiweyo | Uvavanyo lwe-Hydrostatic (ukhetho – ukuqokelela inqwaba akufane kufuneke) | Kuphela xa kuchaziwe |
| Umbhobho ogqityiweyo | Uvavanyo lwe-Gond oluQondisiweyo (i-weld) | Ukuguquguquka kwe-Weld yokuqhuba |
| Umbhobho ogqityiweyo | Uvavanyo lokuTyatya | Ukuqina komzimba wepayipi |
| Umbhobho ogqityiweyo | Okubonakalayo kunye nokuMakisha | Imeko yomphezulu, uphawu lobude |
Kwiinqwaba eziqhutywayo (ukufakelwa kwesando):Uvavanyo lwe-Weld MPI kunye novavanyo lwe-guided bend lubalulekile ukuqinisekisa ukuba i-weld iyasinda ekuthwaleni impembelelo.
Ukhetho kwiindawo zaselwandle okanye ezingcolisayo:
● Ukuhlolwa kokwaleka (ukufunyanwa kweeholide, ukunamathela, ukutyeba)
● Uvavanyo lokuqina (kwiindawo ezimanzi ezimuncu)
● I-PWHT yeengqumba zodonga ezityebileyo (> 50mm)
8. Izicelo eziphambili – Ipayipi yentsimbi ye-ASTM A252 yeBanga lesi-3 ye-LSAW
●Iziseko zebhulorho– Iinqwaba ezinzulu zeengcango zeebhulorho ezikwimida yomlambo nakwimeko yomhlaba othambileyo
● Ukufakwa kweenqwaba zeechweba neechweba– Iinqanawa, iindonga ze-quay, iziseko zesiphelo sesikhongozeli
● Iinqwaba zeejakethi zeqonga laselwandle– Iinqwaba zeziseko zeendawo zeoyile/zegesi kubunzulu bamanzi obunganzulu ukuya kobuphakathi
● Iziseko zenqaba ye-turbine yomoya– Iimonopiles zeefama zomoya ezikude nolwandle (ngokuqhelekileyo zinobubanzi obukhulu, udonga oluqinileyo)
● Izakhiwo eziphakamileyo ezinzulu zeziseko– Iinqwaba ezithwala imithwalo zezakhiwo ezinde ezidolophini
● Iinqwaba zenkxaso yefenda yolwandle– Iinkqubo zeFender zokubeka iinqanawa
● IiCofferdams kunye neendonga zokuxhasa– Ukugcinwa komhlaba okwethutyana okanye okusisigxina
● Isiseko sebhodi yomgaqo omkhulu kunye neepali zokukhanya– Iingqimba ezincinci zobubanzi beziseko zothutho
● Iingqumba zokuzinzisa umhlaba- Iiprojekthi zokuphucula umhlaba
● Iziseko zebhulorho kaloliwe– Iziseko zophuhliso zikaloliwe ezinzima
9. Ukupakishwa kunye nokuthunyelwa – Umbhobho wentsimbi we-ASTM A252 Grade 3 LSAW
Iipayipi zokufaka iipayipi zihlala zithunyelwa ngobuninzi, zihlala zithunyelwa ngqo kwiindawo zokwakha.
Ukupakisha:
● Ububanzi obuncinci (≤ 610mm): Ihlanganiswe ngeentambo zentsimbi (iintambo ezi-3-5 ngenqwaba nganye) kunye neepads zekona ezikhuselayo.
● Ububanzi obukhulu (> 610mm): Imibhobho nganye, eyahlulwe yi-dunnage yomthi.
● Iingqumba zodonga ezinzima: Iipayipi nganye nganye ezineenkxaso ezifakwe uphahla kwiindawo ezi-3-4.
● Izigqubuthelo zokugqibela: Izigqubuthelo zeplastiki zeziphelo ezibhityileyo; iziphelo ezingenanto zingashiywa zivulekile.
● Ukhuseleko lokugquma: Kwiinqwaba ezigqunyiweyo, irabha egqunyiweyo okanye i-foam wrap phakathi kweeleya.
Ukuhambisa ngenqanawe:
● Iinqanawa eziqhekezayo ezinobubanzi obukhulu nezinde (ukuya kuthi ga kwi-60m)
● Iirakhi ezisicaba okanye izikhongozeli ezivulekileyo ezinobude obufikelela kwi-18m
● Izikhongozeli zobubanzi obuncinci (< 610mm, ≤ 12m)
● Uloliwe okanye ilori yokuhambisa impahla ngaphakathi elizweni
Amaxwebhu:Isatifikethi sovavanyo lweMill (EN 10204 Uhlobo 3.1), ingxelo yobukhulu, iingxelo ze-UT/RT (ukuba zichaziwe), uluhlu lokupakisha, i-invoyisi yorhwebo, i-COO.
10. Iingenelo zeWomic Steel kunye neFAQ - Ipayipi yeNsimbi ye-ASTM A252 yeBanga lesi-3 ye-LSAW
Kutheni iWomic Steel isetyenziselwa i-ASTM A252 Grade 3 Piling Pipe?
●Ubungakanani obukhulu obufikelela kwi-3,500mm (138″) – bufanelekile kwii-monopiles kunye nee-marine piles ezinkulu
●Udonga olunzima olufikelela kwi-100mm - luxhasa imithwalo ephezulu kakhulu ye-axial kunye ne-lateral
●Ukwenziwa kweenqwaba ezinde ukuya kuthi ga kwi-60m - kunciphisa ii-slices zentsimi kunye nexesha lokufakwa
●Iinkqubo ezininzi (i-JCOE, i-UOE, ipleyiti eqengqelekayo) zemveliso engabizi kakhulu
●Ukuhlolwa komntu wesithathu kuyafumaneka (SGS, BV, ABS, DNV)
●Ngaphezulu kwe-500 km yeepayipi zokufaka iindonga ezinikezelwa kwihlabathi liphela
●Amaxabiso akhuphisanayo kwiiprojekthi ezinkulu zeziseko zophuhliso
Imibuzo ebuzwa qho:
Q: Yintoni umahluko phakathi kwe-ASTM A252 Grade 3 kunye ne-API 5L X52 yokuqokelela izinto?
A: Ibanga lesi-3 linamandla aphantsi (345 MPa xa kuthelekiswa ne-X52's 360 MPa) kodwa lenzelwe ngokukodwa ukufakwa kweengqokelela eziqhutywayo. Lineemfuno eziphezulu zokuguquguquka kunye nokwandiswa (20% min) kwaye liyakwazi ukumelana nomthwalo onzima ngexesha lokuqhuba ngehamile. I-API 5L X52 ingasetyenziselwa ukufakwa kweengqokelela, kodwa iBanga lesi-3 liyimigangatho yeshishini yeengqokelela zesiseko eMntla Melika nakwiiprojekthi ezininzi zamazwe ngamazwe.
Q: Ngaba ungabonelela ngeenqwaba ezinde kune-18m?
A: Ewe. Singadibanisa amacandelo amaninzi angama-12m okanye angama-18m ukuze senze ubude obufikelela kwi-60m. I-weld nganye ejikelezayo ihlolwe yi-100% UT kwaye ingahlolwa yi-RT xa iceliwe. Ezi nqwaba zinde zihlala zisetyenziselwa ii-monopiles zomoya olwandle (ubude obungama-30-50m).
Q: Bungakanani ubukhulu bodonga obuphezulu kwipayipi ye-LSAW yeBanga lesi-3?
A: Ipleyiti eqengqelekayo ene-single seam ukuya kuthi ga kwi-100mm, i-double seam nayo ifikelela kwi-100mm. Ukuba udonga lunobukhulu obungaphezulu kwe-100mm (umz., i-120mm), nceda unxibelelane nathi ukuze ufumane uvavanyo olukhethekileyo lweprojekthi. Sinikezele ngee-120mm WT piles zeziseko ezikhethekileyo zamanzi anzulu.
Q: Ngaba le mibhobho ifuna uvavanyo lwe-hydrostatic?
A: I-ASTM A252 ayifuni uvavanyo lwe-hydrostatic kuba imibhobho yokufaka iipayipu ayithinteli uxinzelelo. Nangona kunjalo, ukuba iprojekthi yakho ifuna uvavanyo lwe-hydro (umz., ukufakelwa iipayipu ezidibeneyo kunye nokuthuthwa kolwelo), singayenza ngeendleko ezongezelelweyo.
Q: Yeyiphi i-coating ecetyiswayo xa kusenziwa ii-sea piles?
A: Kwiindawo zamanzi olwandle, i-coal tar epoxy (ubukhulu obuyi-600-800 microns) okanye i-glass flake epoxy zixhaphakile. Kwiindawo ze-splash zone, sicebisa i-FBE okanye i-3LPE enokumelana nokurhawuzelelwa okongeziweyo. Kumanzi acocekileyo okanye umhlaba, umbhobho omnyama ocacileyo okanye umphezulu onamafutha uhlala wanele.
Q: Uqinisekisa njani ukuba ii-welds ziyasinda xa ziqhutywa ngesando?
A: Senza i-100% UT yomthungo we-weld kunye ne-MPI (ukuhlolwa kwe-magnetic particle) kwiinzwane ze-weld ukuze sibone naziphi na iintanda zomphezulu. Senza novavanyo lokugoba olukhokelwayo kwiisampuli ze-weld ukuqinisekisa ukuqina. Kwii-critical driven piles, singabonelela ngovavanyo lwe-Charpy impact kwi-0°C okanye ngaphantsi.
Q: Lingakanani ixesha eliqhelekileyo lokuqalisa iipayipi zokufaka iipayipi zeBanga lesi-3?
A: Ixesha eliqhelekileyo lokukhokela: iintsuku ezingama-30-45 kwiidayamitha ≤ 1,422mm. Kwiipayipi ezinkulu ezijikelezileyo ezinobubanzi (> 1,422mm): iintsuku ezingama-45-60. Kwiinqwaba ezinde eziweldiweyo (ukuya kuthi ga kwi-60m): yongeza iiveki ezi-2-3 zokuwelda nokuhlola okujikelezayo.
Isalathiso seProjekthi – Ukwandiswa kweSitishi seZikhumbi saseHouston
Ilizwe:I-United States (eHouston, eTexas)
Imigangatho kunye neBanga:I-ASTM A252 Grade 3 (enefuthe elongezelelweyo leCharpy kwi-0°C)
Ubukhulu kunye nobungakanani:
●OD 914mm (36″) × Ubunzima 19.0mm – 18,000 yeemitha (malunga neetoni eziyi-7,600) ezenziwe yinkqubo ye-JCOE
●OD 1,067mm (42″) × Ubunzima 22.2mm – 9,000 yeemitha (malunga neetoni ezingama-4,600) ezenziwe ngepleyiti egoqiweyo enye
●OD 1,219mm (48″) × Ubunzima 25.4mm – 3,500 yeemitha (malunga neetoni ezingama-2,500) ezenziwe ngepleyiti eqengqiweyo enye (yeendawo zokulala emanzini anzulu)
Isimbuku:Iimitha ezingama-30,500 (30.5 km) zokufaka iinqwaba, malunga neetoni ezili-14,700
Iinkcukacha:Iziphelo ezingenanto (ezisikwe ngesikwere) ezine-chamfer, i-epoxy coating (500 microns, uhlobo lwe-coal tar epoxy) yokukhusela ukugqwala emanzini ane-brackish Houston Ship Channel. Uvavanyo lokuthamba oluyimfuneko (akukho mifantu emva kokuthamba kwe-1/3 diameter). Uvavanyo lokugoba olukhokelwayo lokuguquguquka kwe-weld. I-100% UT yomthungo we-weld kunye ne-10% RT spot. I-MPI yeenzwane ze-weld. Impembelelo ye-Charpy kwi-0°C (min 20J, eqhelekileyo i-40-60J). Uhlolo lomntu wesithathu yi-SGS.
Isicelo:Ukwandiswa kweBayport Container Terminal kwiZibuko laseHouston. Le projekthi yayibandakanya ukwakha iindawo ezimbini ezintsha zokuhlala (udonga lwe-quay iyonke oluyi-1,200m) kunye nendawo yokugcina izikhongozeli ecaleni komhlaba. Iipayipu zentsimbi zisebenza njengesiseko sesakhiwo sedekhi yekhonkrithi (iipayipu ezithwala umthwalo ezithe nkqo) kunye neepayipu zenkxaso yefender (umthwalo osecaleni). Ubunzulu bamanzi kwiindawo zokuhlala: 16m.
Imingeni yoBugcisa kunye neZisombululo:
●Indawo engqonge amanzi amdaka nerhabaxa– IHouston Ship Channel inomxholo ophezulu we-chloride (10,000-18,000 ppm) kunye ne-pH ephantsi (6.5-7.0) ngenxa yokuntywila kwamanzi kwimizi-mveliso. I-Womic esetyenzisiweyo nge-tar epoxy coating (600 microns DFT) eneeleya ezimbini: i-primer (200 microns) + i-topcoat (400 microns). I-coating idlule uvavanyo lwe-salt spray lweeyure ezingama-3,000 (ASTM B117) olune-<2mm creep. Ukufunyanwa kweholide kwenziwe kwi-3.5kV ngaphandle kokusilela.
●Uxinzelelo oluphezulu lokuqhuba kwisanti exineneyo– Iprofayili yomhlaba kwisiphelo sendlela inesanti exineneyo ene-silty land ene-standard penetration test (SPT) N-values ezingama-30-50. Uxinzelelo lokuqhuba iinqwaba lusondele kwi-80% yamandla okuvelisa. I-Womic yenze uvavanyo lokugoba olukhokelwayo kwiikhuphoni ze-weld (i-bend radius 4x ubukhulu, 180°) ngaphandle kokuqhekeka. Sikwabonelele nge-weld MPI kwinqwaba nganye yama-50 ukuqinisekisa ukuba akukho kuqhekeka kweenyawo. Umenzi wokuqhuba iinqwaba zomthengi uxele ukuba akukho kuqhekeka kwe-welds ngexesha lokufakwa kweenqwaba ezingama-2,100.
●Iinqwaba ezinde zeengqimba zamanzi anzulu– Indawo enzulu yokulala yayifuna iinqwaba eziqhutywa ukuya kubunzulu obuziimitha ezingama-32 (20m ukuya elwandle + 12m ngaphezulu komgca wodaka). Iingxube eziqhelekileyo eziyi-12m ziya kufuna ii-splices zentsimi ezi-3 ngenqwaba nganye. I-Womic inikezele ngee-joints ezinde eziyi-18m (i-rolled plate single seam) kwiinqwaba eziyi-1,067mm kunye ne-1,219mm, nto leyo enciphisa ii-splices zentsimi ukusuka kwi-3 ukuya kwi-2 ngenqwaba nganye (ukonga ixesha lokuwelda elingama-35%). Sikwanikeze neenqwaba ezinde eziyi-36m zenkqubo ye-fender (akukho zidibaniso zifunekayo) ngokuwelda amacandelo amabini ayi-18m ukusuka ekuqaleni ukuya ekupheleni nge-SAW engene ngokupheleleyo kunye ne-100% UT.
●Ukuqina kwempembelelo yokuqhuba ebusika– Amaqondo obushushu asebusika eHouston anokwehla aye kwi -5°C. Ukuqhuba ngenqwaba kubushushu obuphantsi kuyingozi yokuqhekeka. I-Womic enikwe i-Grade 3 enokuqina okuphuculweyo kubushushu obuphantsi: Impembelelo yeCharpy kwi-0°C min 20J (i-A252 eqhelekileyo ayifuni naluphi na uvavanyo lwempembelelo). Iziphumo zokwenyani: 45-65J kwi-0°C, 35-50J kwi -10°C. Umthengi ufake oku njengemfuneko engekho mfuneko kodwa eluncedo.
●Ukuhanjiswa kweLogistics ngexesha elifanelekileyo– Indawo yokwakha yayinommandla omncinci wokumisa (iimitha zesikwere eziyi-8,000 kuphela). IWomic yayicwangcise ukuthunyelwa kwempahla kane (malunga neetoni eziyi-3,700 nganye) kwiinyanga ezi-5. Iipayipi zazithunyelwa ngenqanawa enkulu ukusuka eShanghai ukuya eHouston, emva koko zathunyelwa ngeebhakethi zeetoni ezingama-200 rhoqo kwiiveki ezi-2. Iqela lezothutho leWomic lidibene negunya lezibuko ukuze kubekwe phambili ukuthunyelwa kwempahla kunye nokulayishwa kwelori ngqo, kuthintelwe ukugcinwa kwizibuko. Zonke iimpahla zifike kwiintsuku ezi-±3 zemihla ebekiweyo.
●Ukuthobela umthetho wokurhoxiswa kwe-Buy America– Iprojekthi yePort of Houston ifune ukuxolelwa kwesinyithi sangaphandle kuba imveliso yasekhaya yase-US ayizange ikwazi ukuhlangabezana neshedyuli. I-Womic inike amaxwebhu aneenkcukacha ezibandakanya izatifikethi zomatshini, ilizwe lemvelaphi, kunye nokulandeleka kwezinto. Ukuxolelwa kwavunywa, kwaye zonke iitoni ezili-14,700 zahlawula i-US Customs ngaphandle kokulibaziseka.
● Iziphumo:Ukwandiswa kweBayport Container Terminal kwagqitywa kwikota yesithathu ka-2024, ngaphambi kwexesha elicwangcisiweyo. Zonke iipayipu zentsimbi ezingama-2,100 ziphumelele uvavanyo lomthwalo (uvavanyo lomthwalo ongashukumiyo kwi-5% yeepayipu: ukuhlaliswa < 10mm kumthwalo woyilo oluphindwe kabini). Igunya lezibuko libike ukuba akukho kusilela kweepayipu okanye iingxaki zokugquma. IWomic Steel ifumene ibhaso elithi "Supplier Performance Excellence" kwikontrakta jikelele (inkampani enkulu yobunjineli bokwakha yaseMelika). Esi sikhululo ngoku siyasebenza, siphatha i-TEU ezizigidi ezili-1.5 ngonyaka.
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 leepayipu zentsimbi ze-ASTM A252 zeBanga lesi-3 ze-LSAW zeziseko zeebhulorho, iipayipu zaselwandle, iziseko zokwakha ezinzulu, kunye nee-monopiles zefama yomoya elwandle kwihlabathi liphela.
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