1. Tšepe ea Womic: Bokhoni ba Tlhahiso le Matla a Khamphani
Womic Steel Group e sebetsa mela e mengata ea tlhahiso ea LSAW e etselitsoeng ka ho khetheha lits'ebetso tsa ho bokella mabota a boima le bophara bo boholo. Liphaephe tsa ASTM A252 tsa Kereiti ea 3 li hloka ho sebetsa hantle haholo le thepa e tsitsitseng ea mechini bakeng sa ho khanna tšimong (hammering) ntle le ho petsoha.
● Mohala oa JCOE:Bakeng sa bophara ba 406mm – 1,422mm (16″–56″), botenya ba lebota bo fihlang ho 50.8mm. E loketse liqubu tsa motheo tsa borokho le tsa moaho.
●Mola oa UOE:Bakeng sa bophara ba 508mm – 1,220mm (20″–48″), botenya ba lebota bo fihlang ho 40mm. E hlahisa liqubu tse chitja haholo bakeng sa mamello ea ho khanna ka thata.
●Poleiti e Menoang (Seam e le 'Ngoe - Lebota le Boima):Bakeng sa bophara ba 600mm – 3,500mm (24″–138″), botenya ba lebota ho tloha ho 25mm ho isa ho 100mm. Poleiti e le 'ngoe e phuthoa le ho kopanngoa ka bolelele. E loketse liqubu tse kholo tsa leoatleng le liqubu tsa jakete ea leoatleng.
● Poleiti e Menoang (Seam e Habeli):Bakeng sa bophara ba 1,200mm – 3,500mm (48″–138″), botenya ba lebota bo fihlang ho 100mm. Meromo e 'meli e telele. E sebelisoa bakeng sa liqubu tse kholo ka ho fetisisa tsa motheo oa leoatleng.
Bokgoni bohle ba LSAW bo feta ditone tse 300,000 ka selemo, ka tlhahiso e inehetseng ya diphaephe tsa ho bokella dipeipi e fetang ditone tse 120,000 ka selemo. Womic Steel e na le ISO 9001, CE (EN 10219, EN 10248), mme e ka fana ka tlhahlobo ya motho wa boraro ke SGS, BV, ABS, DNV, le TÜV. Diphaephe tsa ho bokella dipeipi tse fetang dikhilomithara tse 500 di fanwa lefatsheng ka bophara bakeng sa dikou, marokho le metheo ya lewatle.
Ho tenyetseha ha Tlhahiso bakeng sa ASTM A252 Kereiti ya 3:
●JCOE: 406–1,422mm OD × 6.0–50.8mm Boima × ≤ 18m
●UOE: 508–1,220mm OD × 6.0–40.0mm Boima × ≤ 24m
●Poleiti e phutholohileng (sehokelo se le seng): 600–3,500mm OD × 25–100mm Boima × ≤ 18m (ho fihlela ho 60m ka ho tjheseletsa dikarolo tse ngata)
●Poleiti e phutholohileng (sehokelo se habeli): 1,200–3,500mm OD × 25–100mm Boima × ≤ 18m
Bakeng sa bolelele bo feteletseng ho fihlela ho 60m, Womic e ka tjheseletsa dikarolo tse ngata ho tloha qalong ho isa qetellong ka ho sebedisa di-weld tse potolohang tsa SAW tse kenellang ka botlalo (tse hlahlobilweng ka 100% UT). Diqubu tsena tse telele di fokotsa di-slices tsa tshimo nakong ya ho kenngwa.
2. ASTM A252 Kereiti ea 3: Sebopeho sa thepa le litšobotsi tsa ts'ebetso
ASTM A252 Kereiti ya 3 ke kereiti ya matla a phahameng ka ho fetisisa tlhalosong ya A252 bakeng sa diphaephe tsa tshepe tse welditsweng le tse se nang sekoli. Matla a fokolang a tlhahiso ke 345 MPa (50,000 psi) le matla a ho thapolla a 455 MPa (66,000 psi). Ho fapana le API 5L, A252 ha e na dihlopha tsa PSL1/PSL2 empa e hloka ductility e ntle (bolelele) le ho tjheseletsa hantle bakeng sa ho kganna tshimong.
Sebopeho sa Lik'hemik'hale (max % ka boima - e tloaelehileng bakeng sa Kereiti ea 3, ASTM A252 ha e laele meeli e tsitsitseng):
| Karolo | Mefuta e Tloaelehileng (Tšepe ea Basali) |
| C | 0.20 – 0.26 |
| Mn | 0.80 – 1.30 |
| P | ≤ 0.030 |
| S | ≤ 0.030 |
| Si | 0.15 – 0.40 |
| CEV | ≤ 0.45 (e tloaelehileng ≤ 0.42) |
Womic e sebelisa maemo a laoloang a khabone le manganese ho fihlela matla a Sehlopha sa 3 ha e ntse e boloka ho tenyetseha ho hoholo le ho kgona ho kopanya masimo.
Thepa ea Mekaniki (Mocheso oa Kamore):
| Thepa | ASTM A252 Kereiti ea 3 |
| Matla a Tekanyo (metsotso) | 345 MPa (50,000 psi) |
| Matla a ho Tenyetseha (metsotso) | 455 MPa (66,000 psi) |
| Ho lelefatsa (metsotso) | 20% (bakeng sa gauge ea 50mm) |
| Bothata (bo tloaelehileng) | 75-85 HRB |
Papiso le Likereiti tsa ASTM A252:
| Sehlopha | Tekanyo ea MPa (metsotso) | MPa e tenyetsehang (metsotso) | Tšebeliso e Tloaelehileng |
| Sehlopha sa 1 | 205 | 310 | Mosebetsi o bobebe, ho bokella liqubu tsa nakoana |
| Sehlopha sa 2 | 240 | 415 | Ho bokella motheo ka kakaretso |
| Sehlopha sa 3 | 345 | 455 | Mosebetsi o boima, motheo o tebileng, likepe |
Sehlopha sa 3 se matla ho feta Sehlopha sa 2 ka hoo e ka bang ka 40%, e leng se lumellang likarolo tse tšesaane tsa lebota kapa boima bo phahameng ba mojaro bakeng sa bophara bo lekanang.
3. Ho Latela Maemo le Litekanyetso tsa Tekanyo
| Ntho | Tlhaloso |
| E tloaelehileng | ASTM A252 Kereiti ea 3 (hape le Kereiti ea 1, Kereiti ea 2 ea fumaneha) |
| Mekhoa ea Tlhahiso | JCOE, UOE, poleiti e phutholohileng (sehokelo se le seng/se habeli) |
| Sebaka sa Bophara ba Kantle | 219mm – 3,500mm (8″ – 138″) |
| Botenya ba Lebota | JCOE/UOE: 6.0mm – 50.8mm; Poleiti e phutholohileng: 25mm – 100mm |
| Bolelele ba Nako | E tloaelehileng: 6m, 12m, 18m; E atolositsoe: ho fihlela ho 60m (likarolo tse tjheseditsweng) |
| Qetello ea ho Qetela | Qetello e se nang letho (PE), Qetello e Beveled (BE), kapa e nang le khoele e kopantsoeng (ha ho kopuoa) |
| Qetello ea Bokaholimo | E hlobotse, e tlotsitsoe ka oli, e koahetsoeng ka botšo, epoxy, epoxy ea sekontiri sa mashala, zinki (e galvanized) |
| Mamello | OD: ± 0.75% kapa ± 3.2mm; Boima: -0% / + 15%; Bolelele: + 100mm / -0mm bakeng sa ho bokella (ha ho thata ho feta API) |
| Ho otloloha | ≤ 0.2% ea bolelele (e tloaelehileng) |
4. Litekanyo le Litlhaloso tse Fumanehang – ASTM A252 Kereiti ya 3 LSAW Steel Pipe (Boholo bo Tloaelehileng bo Khethiloeng)
| OD (mm) | Dikgetho tsa WT (mm) | Tshebetso | Boima bo ka bang teng (kg/m2) | Bolelele bo Tloaelehileng | Tšebeliso e Tloaelehileng |
| 219 | 6.4, 8.0, 10.0, 12.5 | JCOE | 33.6 – 63.6 | 12m / 18m | Motheo oa kaho |
| 273 | 6.4, 8.0, 10.0, 12.5 | JCOE | 42.1 – 80.1 | 12m / 18m | Sekepe sa borokho |
| 324 | 8.0, 10.0, 12.5, 14.0 | JCOE | 62.4 – 107.1 | 12m / 18m | Ho bokella likou |
| 406 | 8.0, 10.0, 12.5, 14.0, 16.0 | JCOE/UOE | 78.5 – 153.9 | 12m / 18m | Motheo oa boema-kepe |
| 508 | 10.0, 12.5, 14.0, 16.0, 19.0 | UOE | 122.8 – 229.1 | 12m / 18m / 24m | Ho bokella liqubu tsa metsing |
| 610 | 12.5, 14.0, 16.0, 19.0, 22.0 | UOE | 184.2 – 319.1 | 12m / 18m / 24m | Katoloso ea kou |
| 711 | 12.5, 14.0, 16.0, 19.0, 22.0, 25.4 | JCOE/UOE | 215.3 – 429.4 | 12m / 18m | Sethala sa kantle ho naha |
| 813 | 14.0, 16.0, 19.0, 22.0, 25.4, 30.0 | JCOE | 275.9 – 579.8 | 12m / 18m | Motheo o tebileng |
| 914 | 16.0, 19.0, 22.0, 25.4, 30.0, 35.0 | JCOE/E phutholohileng | 354.4 – 759.2 | 12m / 18m | Borokho ba caisson |
| 1,016 | 19.0, 22.0, 25.4, 30.0, 35.0, 40.0 | E phutholohile | 467.1 – 963.9 | 12m / 18m | Seteishene sa likepe |
| 1,220 | 22.0, 25.4, 30.0, 35.0, 40.0, 45.0, 50.0 | E phutholohile | 650.0 – 1,450.5 | 12m / 18m | Jakete ea mose ho maoatle |
| 1,422 | 25.4, 30.0, 35.0, 40.0, 45.0, 50.0, 60.0 | E phutholohile | 875.1 – 2,016.8 | 12m / 18m | Liqubu tse kholo tsa leoatleng |
| 1,600 | 30.0, 40.0, 50.0, 60.0, 70.0, 80.0 | E phutholohile (e habeli) | 1,162 – 3,000 | 12m / 18m | Motheo oa metsi a tebileng |
| 2,000 | 40.0, 50.0, 60.0, 70.0, 80.0, 90.0 | E phutholohile (e habeli) | 1,933 – 4,240 | 12m | Morero o moholo oa kou |
| 2,500 | 50.0, 60.0, 70.0, 80.0, 90.0, 100.0 | E phutholohile (e habeli) | 3,023 – 5,917 | 12m | Sebopeho se seholo sa lewatle |
| 3,000 | 60.0, 70.0, 80.0, 90.0, 100.0 | E phutholohile (e habeli) | 4,351 – 7,149 | 12m | Polasi ea moea ea kantle ho naha |
Liphaephe tse boima tsa ho bokella mabota (≥ 50mm) li ka hloka PWHT ho fokotsa khatello e setseng. Bakeng sa libaka tse bolila (tsa leoatleng), taolo e eketsehileng ea ho thatafala e ka fanoa ha ho kopuoa.
5. Maemo a Tloaelehileng le Likereiti – Phaephe ea ho Bokella Libopeho
| E tloaelehileng | Likereiti tsa Tšepe | Tšebeliso e Tloaelehileng | Mokhoa oa ho Theha |
| ASTM A252 | Sehlopha sa 1, sa 2, sa 3 | Ho bokella motheo, likepe | JCOE/UOE/E phutholohileng |
| EN 10248 | S235GP, S275GP, S355GP | Ho bokella masela a phuthoang ka mocheso (phaephe) | E phutholohile |
| EN 10219 | S235JRH, S275JRH, S355JRH, S355J2H | Likarolo tse se nang letho tsa sebopeho tse entsoeng ka thapo tse batang | JCOE/E phutholohileng |
| API 5L | GR.B, X42, X52 | Ho bokella liforomo tsa oli/khase | JCOE/UOE |
| ASTM A500 | GR.B, GR.C | Phaephe e chitja ea sebopeho | JCOE |
| BS 7191 | S275, S355 | Meaho ea kantle ho naha | E phutholohile |
Kakaretso ea tšebeliso:Metheo ea borokho, ho bokellana ha kou le kou, liqubu tsa jakete ea sethala sa lebopong, metheo ea turbine ea moea, metheo e tebileng ea meaho, li-cofferdams, litsamaiso tsa fender tsa leoatleng.
6. Mekhoa ea Tlhahiso – LSAW bakeng sa Liqhomane tsa Tšepe tsa ASTM A252 tsa Kereiti ea 3
Tšepe ea Womic e khetha ts'ebetso ho latela bophara le botenya ba lebota. Bakeng sa lits'ebetso tsa ho bokella, mamello ea litekanyo ha e thata hakaalo ho feta API 5L, empa botšepehi ba weld le ductility li bohlokoa bakeng sa ho khanna ka hamore.
Ts'ebetso ea JCOE (406–1,422mm OD, Boima ba 6.0–50.8mm):
● Ho sila ka poleiti (bevel e bonolo, ha ho na tlhoko e tiileng bakeng sa X kapa J)
● Ho thehoa ha JCO ka tatellano
● Ho tjheseletsa ka SAW (ka hare le kantle)
● Katoloso ea mechine (ha ho hlokahale - hangata liphaephe tsa ho bokella ha li hloke katoloso)
● E loketse boholo ba liqubu tsa motheo
Ts'ebetso ea UOE (508–1,220mm OD, Boima ba 6.0–40mm):
● Tobetsa ka holimo le ka holimo ka ho atolosa
● E hlahisa liqubu tse chitja haholo - e molemo bakeng sa mamello ea ho khanna ka thata mekoting e chekiloeng esale pele
● E sebelisoa bakeng sa liqubu tsa sethala tse lebōpong la leoatle
Poleiti e Menoang (Seam se le Seng) bakeng sa Lebota le Boima le Bophara bo Boholo (600–3,500mm OD, Boima ba 25–100mm):
● Meqolo e 4 e kobehang ka har'a silindara
● Ho tjheseletsa ka longitudinal SAW (ho sebelisa li-multi-pass bakeng sa mabota a teteaneng)
● Ha ho katoloso ea mechine (mamello ea ovality ± 0.75% ea amoheleha bakeng sa ho bokella)
● E loketse liqubu tse kholo tsa leoatle moo ho chitja ho seng bohlokoa haholo ho feta boima ba mojaro.
Poleiti e Menoang (Seam e Habeli) bakeng sa Bophara bo Boholo Haholo (1,200–3,500mm OD, Boima ba 25–100mm):
● Lipoleiti tse peli li phuthoa le ho kopanngoa ka har'a lithupa tse peli
● Sekoahelo se seng le se seng se hlahlobiloe ka 100% UT le RT
● E sebelisoa bakeng sa liqubu tse bophara bo boholo ka ho fetisisa (li-monopile tsa polasi ea moea tse fihlang ho 10m OD)
Ho Etsoa ha Meqomo e Melelele (ho fihlela ho 60m):Bakeng sa merero e hlokang liqubu tse telele haholo (mohlala, li-monopile tsa moea tse tsoang lebopong la leoatle), Womic e ka tjheseletsa likarolo tse ngata tsa 12m kapa 18m ho tloha qalong ho ea qetellong ka ho sebelisa li-weld tsa SAW tse potolohang ka botlalo. Weld e 'ngoe le e 'ngoe e potolohang e hlahlojoa ka 100% UT le RT. Qhobosheane e felileng e imolloa khatellong (PWHT) haeba botenya ba lebota bo feta 40mm.
7. Mekhoa ea Taolo ea Boleng le Liteko bakeng sa Phaephe ea Tšepe ea LSAW ea ASTM A252 Kereiti ea 3
| Sethaleng | Mokhoa oa Tlhahlobo | Morero |
| Poleiti | Tlhahlobo ea Lik'hemik'hale | Netefatsa maemo a khabone/manganese |
| Poleiti | Teko ea ho Tenyetseha | Netefatsa chai le ho thapolla (≥ 345/455 MPa) |
| Poleiti | Teko ea ho Koba | Netefatso ea boiketsetso |
| Ts'ebetsong | Tekanyo (OD, WT, ovality) | Netefatsa hore phaephe e tšoana |
| Sehokelo sa ho weld | Teko ea Ultrasonic (100% bakeng sa liqubu tse mahlonoko) | Lemoha liphoso tsa ho tjheseletsa |
| Sehokelo sa ho weld | RT (sebaka - 10% se tloaelehileng bakeng sa ho bokella) | Netefatso ea boleng ba ho weld |
| Sehokelo sa ho weld | MPI (menoana ea ho weld) | Mapetso a bokaholimo (a bohlokoa bakeng sa liqubu tse khannoang) |
| Phaephe e felileng | Teko ea Hydrostatic (ha ho hlokahale - ho bokella likhoele hangata hoa hlokahala) | Ha feela ho boletsoe |
| Phaephe e felileng | Teko ea ho Koba e Tataisoang (ho tjheseletsa) | Ho tsamaisa lintho ka weld bakeng sa ho kganna |
| Phaephe e felileng | Teko ea ho Batalatsa | Ho ductility ha 'mele oa phaephe |
| Phaephe e felileng | Pono le Matšoao | Boemo ba bokaholimo, ho tšoaea bolelele |
Bakeng sa liqubu tse khannoang (ho kenya hamore):Liteko tsa MPI ea ho weld le tsa ho kobeha tse tataisoang li bohlokoa ho netefatsa hore weld e pholoha ho tlala ha matla.
Khetho bakeng sa libaka tsa leoatleng kapa tse senyang:
● Tlhahlobo ea ho koahela (ho lemoha matsatsi a phomolo, ho khomarela, botenya)
● Teko ea ho tiea (bakeng sa libaka tse bolila tsa leoatle)
● PWHT bakeng sa liqubu tse teteaneng tsa mabota (> 50mm)
8. Likopo tsa Motheo - Pipe ea Tšepe ea LSAW ea ASTM A252 ea Kereiti ea 3
●Metheo ea borokho– Liqubu tse tebileng bakeng sa lipier tsa borokho mabopong a linoka le mobung o bonolo
● Ho bokella liqubu tsa koung le koung– Maemakepe a likepe, mabota a koung, metheo ea setshelo
● Liqubu tsa jakete ea sethala sa kantle ho naha– Liqubu tsa motheo bakeng sa liforomo tsa oli/khase botebong ba metsi bo sa tebang ho isa bo itekanetseng
● Metheo ea tora ea turbine ea moea– Li-monopile bakeng sa mapolasi a moea a lebopong la leoatle (hangata bophara bo boholo, lebota le teteaneng)
● Metheo e tebileng ea meaho e phahameng– Liqubu tse jarang mojaro bakeng sa mehaho e metelele libakeng tsa litoropo
● Liqubu tsa tšehetso ea fender ea leoatleng– Litsamaiso tsa fender bakeng sa ho emisa sekepe
● Mabota a polokelo le a tšireletso– Ho boloka mobu ka nakoana kapa ka ho sa feleng
● Letšoao la tsela e kholo le metheo ea lipalo tsa mabone– Liqhobosheane tse nyane bakeng sa meralo ea motheo ea lipalangoang
● Liqubu tsa ho tsitsisa mobu- Merero ea ntlafatso ea mobu
● Metheo ea borokho ba terene– Meralo ea motheo ea literene tse boima
9. Pakete le Thomello – ASTM A252 Kereiti ya 3 LSAW Steel Pipe
Liphaephe tsa ho bokella lipeipi hangata li romeloa ka bongata bo boholo, hangata li romeloa ka kotloloho libakeng tsa kaho.
Sephutheloana:
● Bophara bo bonyenyane (≤ 610mm): E tlamiloe ka maqhama a tšepe (maqhama a 3-5 ka sephutheloana) ka li-pad tsa sekhutlo tse sireletsang.
● Bophara bo boholo (> 610mm): Liphaephe tse arohaneng, tse arotsoeng ka lehong la dunnage.
● Liqubu tse boima tsa mabota: Liphaephe tse ikemetseng tse nang le litšehetso tse nang le mapheo a 3-4.
● Likoahelo tsa ho qetela: Likoahelo tsa polasetiki bakeng sa lipheletso tse betliloeng; lipheletso tse se nang letho li ka siuoa li butsoe.
● Tšireletso ea ho koahela: Bakeng sa liqubu tse koahetsoeng, lipeiti tsa rabara kapa foam phuthela pakeng tsa mealo.
Ho tsamaisa ka sekepe:
● Meqomo e robehileng bakeng sa liqubu tse kholo tsa bophara le bolelele bo bolelele (ho fihlela ho 60m)
● Liraka tse bataletseng kapa lijana tse bulehileng tse bolelele ba ho fihlela ho 18m
● Lijana tsa bophara bo bonyenyane (< 610mm, ≤ 12m)
● Terene kapa teraka bakeng sa ho isa thepa ka hare ho naha
Litokomane:Setifikeiti sa Teko ea Mill (EN 10204 Mofuta oa 3.1), tlaleho ea litekanyo, litlaleho tsa UT/RT (haeba li boletsoe), lethathamo la liphutheloana, invoice ea khoebo, COO.
10. Melemo le Lipotso Tse Botsoang Khafetsa ka Tšepe ea Womic - Pipe ea Tšepe ea LSAW ea ASTM A252 Kereiti ea 3
Hobaneng Tšepe ea Womic e le Pipe ea ho Jala ea ASTM A252 ea Kereiti ea 3?
●Bokgoni bo boholo ba bophara bo fihlang ho 3,500mm (138″) – bo loketse di-monopile le diqubu tse kgolo tsa lewatle
●Lebota le boima ho fihlela ho 100mm - le tšehetsa meroalo e phahameng haholo ea axial le lateral
●Ho etsoa ha liqubu tse telele ho fihlela ho 60m - ho fokotsa li-slices tsa masimo le nako ea ho li kenya
●Mekhoa e mengata (JCOE, UOE, poleiti e phutholohileng) bakeng sa tlhahiso e theko e tlaase
●Tlhahlobo ea motho oa boraro e ea fumaneha (SGS, BV, ABS, DNV)
●Liphaephe tsa ho kenya lipeipi tse fetang 500 km li fanoa lefatšeng ka bophara
●Litheko tse qothisanang lehlokoa bakeng sa merero ea meralo ea motheo e meholo
Lipotso Tse Botsoang Khafetsa:
P: Phapang ke efe pakeng tsa ASTM A252 Kereiti ya 3 le API 5L X52 bakeng sa ho bokella dipeo?
A: Kereiti ya 3 e na le matla a tlase (345 MPa ha e bapiswa le X52's 360 MPa) empa e etseditswe ka ho kgetheha ho kenya di-pile tse kgannwang. E na le ditlhoko tse hodimo tsa ductility le ho lelefala (20% min) mme e mamella ho jara ha matla ha ho kgannwa ka hamore. API 5L X52 e ka boela ya sebediswa bakeng sa ho kenya di-pile, empa Kereiti ya 3 ke tekanyetso ya indasteri bakeng sa di-pile tsa motheo Amerika Leboya le merero e mengata ya matjhaba.
P: Na o ka fana ka liqubu tse telele ho feta 18m?
K: E. Re ka kopanya likarolo tse ngata tsa 12m kapa 18m ho hlahisa bolelele bo fihlang ho 60m. Weld e 'ngoe le e 'ngoe e potolohang e hlahlojoa ka 100% UT 'me e ka hlahlojoa ka RT ha e kopuoa. Liqubu tsena tse telele li sebelisoa hangata bakeng sa li-monopile tsa moea tse tsoang lebopong la leoatle (bolelele ba 30-50m).
P: Botenya bo boholo ba lebota bakeng sa phaephe ea LSAW ea Sehlopha sa 3 ke bofe?
K: Sekoahelo se le seng sa poleiti e phuthoang se fihla ho 100mm, sekoahelo se habeli se fihla ho 100mm. Bakeng sa botenya ba lebota bo fetang 100mm (mohlala, 120mm), ka kopo ikopanye le rona bakeng sa tlhahlobo e khethehileng ea projeke. Re fane ka liqubu tsa WT tsa 120mm bakeng sa metheo e khethehileng ea metsi a tebileng.
P: Na liphaephe tsena li hloka tlhahlobo ea hydrostatic?
K: ASTM A252 ha e hloke tlhahlobo ea hydrostatic hobane liphaephe tsa ho bokella ha li na khatello. Leha ho le joalo, haeba projeke ea hau e hloka tlhahlobo ea hydro (mohlala, bakeng sa ho kopanya liphaephe le ho tsamaisa metsi), re ka e etsa ka litšenyehelo tse ling.
P: Ke pente efe e kgothaletswang bakeng sa ho bokella dipeipi tsa lewatleng?
K: Bakeng sa libaka tsa metsi a leoatle, epoxy ea sekontiri sa mashala (botenya ba 600-800 microns) kapa epoxy ea khalase e nang le flake li tloaelehile. Bakeng sa libaka tsa splash zone, re khothaletsa FBE kapa 3LPE e nang le khanyetso e eketsehileng ea ho khohlela. Bakeng sa metsi a hloekileng kapa mobu, phaephe e ntšo e tloaelehileng kapa bokaholimo bo tlotsitsoeng ka oli hangata bo lekane.
P: U etsa bonnete ba hore li-weld lia pholoha ho khanna ka hamore joang?
K: Re etsa 100% UT ea weld seam hammoho le MPI (tlhahlobo ea likaroloana tsa makenete) ea menoana ea weld ho lemoha mapetso afe kapa afe a bokaholimo. Re boetse re etsa liteko tse tataisoang tsa ho kobeha lisampoleng tsa weld ho netefatsa ho ductility. Bakeng sa liqubu tse khannoang ka hloko, re ka boela ra fana ka teko ea Charpy impact ho 0°C kapa ka tlase.
P: Nako e tloaelehileng ea ho etella pele liphaephe tsa ho bokella tsa Kereiti ea 3 ke efe?
A: Nako e tloaelehileng ea ho etella pele: matsatsi a 30-45 bakeng sa bophara ba ≤ 1,422mm. Bakeng sa liphaephe tse kholo tsa poleiti tse phutholohileng tse bophara ba hodimo (> 1,422mm): matsatsi a 45-60. Bakeng sa liqubu tse telele tse phuthetsoeng (ho fihlela ho 60m): eketsa libeke tse 2-3 bakeng sa ho tjheseletsa le ho hlahloba ka selikalikoe.
Tšupiso ea Morero - Katoloso ea Terminal ea Kou ea Houston
Naha:United States (Houston, Texas)
Maemo le Kereiti:ASTM A252 Kereiti ea 3 (ka tšusumetso e eketsehileng ea Charpy ho 0°C)
Litekanyo le Bongata:
●OD 914mm (36″) × Boima 19.0mm – limithara tse 18,000 (hoo e ka bang lithane tse 7,600) e entsoeng ke ts'ebetso ea JCOE
●OD 1,067mm (42″) × Boima 22.2mm – limithara tse 9,000 (hoo e ka bang lithane tse 4,600) e entsoeng ka seam e le 'ngoe ea poleiti e phutholohileng
●OD 1,219mm (48″) × Boima 25.4mm – 3,500 metres (hoo e ka bang lithane tse 2,500) e entsoeng ka seam e le 'ngoe ea poleiti e phutholohileng (bakeng sa libaka tsa metsi a tebileng)
Kakaretso:Limithara tse 30,500 (30.5 km) tsa ho bokella liqubu, hoo e ka bang lithane tse 14,700
Litlhaloso:Lipheletso tse se nang letho (sekoere se sehiloeng) ka chamfer, epoxy coating (500 microns, mofuta oa epoxy ea mashala) bakeng sa tšireletso ea mafome metsing a brackish Houston Ship Channel. Teko ea ho batalla e tlamang (ha ho na mapetso kamora ho batalla ha 1/3 bophara). Teko ea ho kobeha e tataisoang bakeng sa ho teteana ha weld. 100% UT ea weld seam hammoho le sebaka sa 10% RT. MPI ea menoana ea weld. Tšusumetso ea Charpy ho 0°C (min 20J, 40-60J e tloaelehileng). Tlhahlobo ea motho oa boraro ke SGS.
Kopo:Katoloso ea Seteishene sa Likhonteinara sa Bayport Koung ea Houston. Morero o ne o kenyelletsa ho aha libaka tse peli tse ncha tsa ho robala (lebota la koung ka kakaretso la 1,200m) tse nang le sebaka sa polokelo ea likhonteinara tse ka thoko ho mobu. Likhoele tsa tšepe tsa liphaephe li sebetsa e le motheo oa sebopeho sa konkreite (likhoele tse jarang mojaro o otlolohileng) le likhoele tsa tšehetso ea fender (mojaro o ka thoko). Botebo ba metsi libakeng tsa ho robala: 16m.
Liphephetso tsa Tekheniki le Litharollo:
●Tikoloho ea metsi a letsoai a senyang– Houston Ship Channel e na le chloride e ngata (10,000-18,000 ppm) le pH e tlase (6.5-7.0) ka lebaka la metsi a indasteri. Seaparo sa epoxy sa tar epoxy se sebelisitsoeng ke Womic (600 microns DFT) se nang le mekhahlelo e 'meli: primer (200 microns) + topcoat (400 microns). Seaparo se fetile teko ea spray ea letsoai ea lihora tse 3,000 (ASTM B117) e nang le <2mm creep. Ho lemoha matsatsi a phomolo ho entsoe ho 3.5kV ntle le ho hloleha le ka mohla.
●Khatello e phahameng ea ho khanna lehlabatheng le teteaneng– Boemo ba mobu setsing sa ho tjheseletsa bo na le lehlabathe le teteaneng la silika le nang le ditekanyetso tsa N tse tloaelehileng tsa teko ya ho kenella (SPT) tsa 30-50. Dikgatello tsa ho kganna diqubu di fihlile ho 80% ya matla a kotulo. Womic e entse diteko tse tataisitsweng tsa ho kobeha hodima di-coupon tsa ho weld (radius ya ho kobeha e 4x botenya, 180°) ntle le mapetso. Re boetse re fane ka MPI ya weld hodima qubu e nngwe le e nngwe ya bo50 ho netefatsa hore ha ho mapetso a menoana ya maoto. Rakonteraka wa ho kganna diqubu wa moreki o tlalehile hore ha ho mapetso a robehileng nakong ya ho kenya diqubu tse 2,100.
●Bolelele ba liqubu tse telele bakeng sa libaka tsa ho robala metsing a tebileng– Sebaka se tebileng ka ho fetisisa sa ho robala se ne se hloka liqubu tse khannoang botebong ba 32m (20m ho kena ka tlas'a leoatle + 12m ka holim'a seretse). Li-joints tse tloaelehileng tsa 12m li ne li tla hloka li-splices tse 3 tsa tšimo ka qubu. Womic e fane ka li-joints tse bolelele ba 18m (seam se le seng sa poleiti e phutholohileng) bakeng sa liqubu tsa 1,067mm le 1,219mm, e leng se fokotsang li-splices tsa tšimo ho tloha ho 3 ho isa ho tse 2 ka qubu (ho boloka nako ea ho tjheseletsa ea 35%). Re boetse re fane ka liqubu tse bolelele ba 36m bakeng sa sistimi ea fender (ha ho hlokahale li-splices) ka ho tjheseletsa likarolo tse peli tsa 18m ho tloha pheletsong ho ea qetellong ka SAW e kenang ka botlalo le 100% UT.
●Matla a ho khanna mariha– Lithempereichara tsa mariha tsa Houston li ka theohela ho -5°C. Ho khanna ka liqubu mochesong o tlase ho beha kotsing ea ho robeha habonolo. Womic e fuoang Sehlopha sa 3 ka matla a ntlafalitsoeng a mocheso o tlase: Tšusumetso ea Charpy ho 0°C min 20J (standard A252 ha e hloke liteko tsa ts'usumetso). Liphetho tsa 'nete: 45-65J ho 0°C, 35-50J ho -10°C. Moreki o kenyelelitse sena e le tlhoko e seng ea tlamo empa e le molemo.
●Thomello ea thepa e tlang ka nako e nepahetseng– Sebaka sa kaho se ne se na le sebaka se lekanyelitsoeng sa ho beha thepa (e leng limithara tse lisekoere tse 8,000 feela). Womic e rerile ho romela thepa e mene (e ka bang lithane tse 3,700 ka 'ngoe) ka likhoeli tse 5. Liphaephe li ile tsa tlisoa ka sekepe se seholo ho tloha Shanghai ho ea Houston, eaba li tsamaisoa ka bongata ba lithane tse 200 libeke tse ling le tse ling tse 2. Sehlopha sa thepa sa Womic se ile sa sebelisana le bolaoli ba koung ho beha pele ho jarolla thepa le ho tsamaisa thepa ka teraka, ho qoba ho e boloka koung. Lithomello tsohle li fihlile matsatsing a ±3 ho tloha matsatsing a reriloeng.
●Ho latela melao ea Buy America waiver– Morero oa Kou ea Houston o ne o hloka ho lokolloa ha tšepe ea kantle ho naha hobane tlhahiso ea lehae ea US e ne e sa khone ho fihlela kemiso. Womic e fane ka litokomane tse qaqileng ho kenyeletsoa le mangolo a feme, naha eo thepa e tsoang ho eona, le ho sala morao ha thepa. Ho tlosoa ha thepa ho ile ha amoheloa, 'me lithane tsohle tse 14,700 li ile tsa amoheloa ke Lekhetho la US ntle le tieho.
● Sephetho:Katoloso ea Bayport Container Terminal e phethetsoe kotara ea boraro ea 2024, pele ho nako e behiloeng. Lipilara tsohle tsa tšepe tse 2,100 li fetile teko ea mojaro (teko ea mojaro o sa fetoheng ho 5% ea lipilara: ho lula < 10mm ka moroalo oa moralo oa 2x). Bolaoli ba kou bo tlalehile hore ha ho na ho hloleha ha lipilara kapa mathata a ho koahela. Womic Steel e fumane khau ea "Supplier Performance Excellence" ho tsoa ho rakonteraka ea akaretsang (khamphani e kholo ea boenjiniere ba sechaba ea US). Terminal hona joale e sebetsa, e sebetsana le TEU ea limilione tse 1.5 selemo le selemo.
Ikopanye le rona:
Webosaete: www.womicsteel.com
Imeile: sales@womicsteel.com
Mohala / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568
Womic Steel – Molekane oa hau ea tšepahalang bakeng sa liqubu tsa liphaephe tsa tšepe tsa ASTM A252 Grade 3 LSAW bakeng sa metheo ea borokho, ho bokella liqubu tsa leoatleng, metheo e tebileng ea meaho, le li-monopile tsa polasi ea moea ea lebopong la leoatle lefatšeng ka bophara.
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