API 5L PSL2 Qib X70 yog tus qauv, hwm- cov khoom lag luam uas feem ntau tsim los ua Kauv Submerged Arc Welded (SSAW) steel kav. Qhov kev sib xyaw ua ke no yog qhov zoo- tsim los ntawm ntau lub tuam txhab thoob ntiaj teb rau qhov xav tau tshaj plaws ntev - nrug, siab - cov roj thiab roj xa mus rau cov kav dej, nrog rau cov dej num hauv ntug dej hiav txwv thiab arctic.
Lub npe "API 5L PSL2 Qib X70 Kauv Submerged Arc Yeeb Nkab" sib txuas ua ke siab heev - lub zog kav dej qib (X70) nrog rau qib PSL2 zoo dua qub, tsim los siv cov txheej txheem kev lag luam spiral vuam rau loj - txoj kab uas hla, lub hom phiaj - cov ntaub ntawv tseem ceeb uas muaj kev ntseeg siab tshaj plaws.
📋 Cov ntsiab lus tseem ceeb rau API 5L PSL2 Qib X70 SSAW Yeeb Nkab
Cov lus hauv qab no qhia txog cov ntsiab lus tseem ceeb rau cov khoom no, raws li cov ntaub ntawv qhia kev lag luam.
| Yam ntxwv | Kev piav qhia |
|---|---|
| Txuj | API 5L: "Specification for Line Pipe" (raws li ISO 3183). |
| Khoom Specification Level | PSL2: Kev txhim kho qib zoo rau kab yeeb nkab, nrog cov kev xav tau nruj dua li PSL1, suav nrog kev tswj cov tshuaj lom neeg nruj dua,lub zog siab tshaj plaws, yuav tsum tau Charpy impact test, thiab nruj dua NDT. |
| Qib Steel | X70 (L485): High-lub zog, micro- alloyed steel. Qhov kev xaiv "X70" qhia txog qhov tsawg kawg nkaus tawm lub zog ntawm70,000 psi (483 MPa) . |
| ISO npe | L485M(rau TMCP) los yogL485Q(rau Q&T). |
| Kev tsim khoom | Spiral (Helical) Submerged Arc Vuam (SSAW / HSAW / DSAW): Ua los ntawm kub- dov steel coil, nrog cov vuam seam khiav tsis tu ncua nyob rau hauv ib tug kauv raws cov yeeb nkab ntev. Welded siv ob -sided tsis siv neeg submerged arc vuam nrog kev nkag mus rau tag nrho . |
| Chemical Composition (Max%) | Cov pa roj carbon (C):0.12% max (PSL1 rau X70 yog 0.26-0.28%) Silicon (Si):0.45% max Manganese (Mn):1.70-1.80% max (siab dua PSL1's 1.65%) Phosphorus (P):0.025% max (nruj dua PSL1's 0.030%) Sulfur (S):0.015% max (50% txo los ntawm PSL1's 0.030%) Vanadium (V):Tsawg dua lossis sib npaug rau 0.07% (nrog Nb + V + Ti tag nrho Tsawg dua lossis sib npaug rau 0.15%) |
| Mechanical Properties | Yield zog: 483-620 MPa (70,000-90,000 psi)range - ob qho tib siyam tsawg kawg thiab siab kawgqhia Tensile zog: 565-760 MPa (82,000-110,000 psi)ntau Yield-rau-Tensile Ratio:Tsawg dua los yog sib npaug0.93siab kawg Elongation:Ntau dua lossis sib npaug li 17-22% (nws txawv ntawm phab ntsa thickness) Charpy Impact: Yuav tsum tauntawm qhov ntsuas kub (feem ntau -10 degree, -20 degree, -30 degree, lossis -45℃rau arctic tej yaam num) nrog yam tsawg kawg nkaus 27J-100J nyob ntawm specification |
| Hom Loj Loj | Sab nraud txoj kab uas hla:219mm txog 4064mm (kwv yees . 8" rau 160") Phab ntsa Thickness:3.2mm txog 40mm (hom ntau rau X70: 8-26mm) Ntev:3 m rau 18 m txheem; mus txog 50 m muaj rau cov ntawv thov tshwj xeeb |
| Cov Kev Ntsuas Tseem Ceeb | Yuav tsum tau Charpy Impact Testingntawm qhov ntsuas kub (piv txwv li -20℃rau X70) Kev Ntsuas Tensiletxheeb xyuas ob qho tib si yam tsawg kawg nkaus thiab siab kawg Tshuaj ntsuam xyuasnrog nruj dua PSL2 txwv (tshwj xeeb tshaj yog C Tsawg dua lossis sib npaug rau 0.12%, S Tsawg dua lossis sib npaug rau 0.015%) Flattening thiab Khoov Testrau weld kev ncaj ncees 100% Tsis yog -Kev kuaj kev puas tsuajntawm weld seam (UT / RT) - yuav tsum tau rau PSL2 Hydrostatic Testtxhua yeeb nkab ntawm 1.5x tsim siab DWTT (Drop Weight Tear Test)rau tawg toughness nyob rau hauv kev siv tseem ceeb Kev kuaj Hardnessrau qib kev pabcuam qaub (yeem xaiv HIC/SSC xeem ib NACE) |
| Cov ntawv thov siv | Ntev-nruab deb siab- cov kav xa hluav taws xob siab (piv txwv li, West-Tebchaws Sab Hnub Tuaj, Tuam Tshoj-Russia East Route); cov kav dej tob hauv ntug dej hiav txwv; huab cua txias thiab cov kav dej arctic uas yuav tsum tau lav qis- kub toughness; crude roj pob tw kab; kev sib sau ua ke; pipeline chaw nres tsheb; tseem ceeb infrastructure; tswj cov kav dej (FERC, DOT, FEMSA kab); Cov ntawv thov kev pabcuam qaub thaum teev nrog cov kev xav tau NACE ntxiv; CO₂ thiab hydrogen thauj pipelines. |
| Daim ntawv pov thawj | Mill Test Certificate rauEN 10204 Hom 3.1 lossis 3.2nrog tag nrho cov qhabnias xeem thiab cov ntaub ntawv traceability. API monogram muaj los ntawm cov ntawv tso cai mills. DNV, TÜV, BV, lossis ABS kev pom zoo muaj rau cov haujlwm tseem ceeb. |
📊 API 5L PSL2 Qib X70: Tshuaj thiab Mechanical Properties
Tshuaj muaj pes tsawg leeg
| Element | PSL2 Specification | PSL1 Sib piv |
|---|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.12% | 0.26% (tseem ceeb nruj tswj) |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 1.70-1.80% | 1.65% (me ntsis siab dua rau lub zog) |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.025% | 0.030% (tsis suav) |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.015% | 50% txo los ntawm PSL1's 0.030% |
| Silicon (Si) | Tsawg dua lossis sib npaug li 0.45% | Tsis tau teev nyob rau hauv PSL1 |
| Vanadium (V) | Tsawg dua lossis sib npaug li 0.07% (nrog Nb + V + Ti Tsawg dua lossis sib npaug rau 0.15%) | Tsis tau teev nyob rau hauv PSL1 |
Mechanical Properties
| Khoom | PSL2 Kev Xav Tau | Qhov tseem ceeb |
|---|---|---|
| Yield zog | 483-620 MPa | Ob leeg yam tsawg kawg nkaus thiab siab tshaj tau teev tseg |
| Tensile zog | 565-760 MPa | Ob leeg yam tsawg kawg nkaus thiab siab tshaj tau teev tseg |
| Yield ratio (Y/T) | Tsawg dua los yog sib npaug0.93 | Xyuas kom txaus ductility |
| Impact Zog | Ntau tshaj lossis sib npaug rau 27-100J @ teev temp | Yuav tsum tau, tsis zoo li PSL1. Rau cov haujlwm tseem ceeb (piv txwv li, arctic), Ntau dua lossis sib npaug rau 100J ntawm -45℃yuav raug teev tseg |
📏 Dimensional Specifications
API 5L qhia txog cov kev kam rau ua hauv qab no rau SSAW kav:
| Parameter | Qhov Loj | Ua siab ntev |
|---|---|---|
| Sab nraud txoj kab uas hla | < 60.3 mm | -0.8 rau +0.4 mm |
| 60.3 hli mus rau 168.3 hli | ±0.0075D | |
| 168.3mm txog 610mm | ± 0.0075D (max ± 3.2 hli) | |
| 610mm txog 1422mm | ± 0.005D (max ± 4.0 hli) | |
| Phab ntsa Thickness | Txhua qhov ntau thiab tsawg | +15.0%, -12.5% |
| Kev ncaj | Txhua qhov ntau thiab tsawg | Tsawg dua lossis sib npaug li 0.1% ntawm tag nrho qhov ntev |
Standard Diameter Range:219mm txog 4064mm (8 "mus rau 160"). Rau X70 PSL2 SSAW, ntau qhov loj- txoj kab uas hla siv cov kav dej los ntawm 508mm (20 ") mus txog 1422mm (56").
📊 Qhov twg X70 haum ntawm API 5L PSL2 Qib
X70 yog qhov chaw zoo tshaj plaws - qhov kev xaiv muaj zog rau cov kev xav tau tshaj plaws hauv cov kav dej, muab cov txiaj ntsig zoo ntawm cov qib qis dua:
| Qib | Tawm tswv yim (min, MPa) | Tawm tswv yim (max, MPa) | Tensile (min, MPa) | Daim ntawv thov |
|---|---|---|---|---|
| B | 245 | 450 | 415 | Tsawg-kev sib sau ua ke, kev siv hluav taws xob |
| X42 | 290 | 495 | 415 | Sib sau ua ke, faib |
| X46 | 317 | 524 | 435 | Nruab nrab-kev sib sau ua ke |
| X52 | 359 | 530 | 460 | General kis tau tus mob - feem ntau |
| X56 | 386 | 545 | 490 | Siab dua -siab kis |
| X60 | 414 | 565 | 517 | High -siab kis |
| X65 | 448 | 600 | 535 | Siab -siab, offshore |
| X70 | 483 | 620 | 565 | Ntev -qhov deb siab -siab, dej tob hauv ntug dej hiav txwv, arctic |
| X80 | 552 | 690 | 620 | Ultra-siab- siab lub cev kab |
🔍 Cov ntsiab lus tseem ceeb kom nkag siab
Dab tsi "PSL2 Qib X70" txhais tau tias: Qhov kev qhia tshwj xeeb no muab cov ultra- siab- lub zog X70 qib (483 MPa yam tsawg kawg nkaus tawm los) nrog cov kev xav tau zoo ntawm PSL2. Qhov tshwm sim yog ib lub yeeb nkab nrog483 MPa yam tsawg kawg nkaus tawm lub zoguas kuj ntaguaranteed cuam tshuam toughness, tsis tshua muaj nruj chemistry tswj (tshwj xeeb tshaj yog carbon Tsawg dua los yog sib npaug rau 0.12% thiab sulfur Tsawg tshaj los yog sib npaug rau 0.015%), siab tshaj plaws lub zog txwv (tsawg dua los yog sib npaug rau 620 MPa), tag nrho traceability, thiab ntau stringent xeem. .
Vim li cas thiaj xaiv PSL2 Qib X70?PSL2 Qib X70 tau teev tseg rau lub ntiaj teb cov kav dej loj tshaj plaws thaum:
Lub zog siab tshaj plaws - rau - qhov hnyav piv yog xav tau rau ultra- siab ua haujlwm siab
Ntev - kis tau tus mob yuav tsum optimized phab ntsa thickness thiab cov khoom txuag
Tsawg- qhov kub thiab txias kev pabcuam yuav tsum tau lav qhov cuam tshuam (feem ntau -20℃txog -45 degree)
Qhov project specifications mandate PSL2 zoo (ib qho rau cov kab loj loj)
Txhim kho cov ntaub ntawv thiab traceability yog xav tau los ntawm cov lis dej num thoob ntiaj teb
Kev txwv lub zog siab tshaj plaws xav tau kev tswj xyuas kom tsis txhob muaj teeb meem ntawm kev sib tsoo
Kev pabcuam qaub yuav tsum muaj cov ntsiab lus tsis tshua muaj leej faj (tsawg dua lossis sib npaug rau 0.002% rau kev ua raws NACE)
Kev tswj hwm kev ua raws cai (FERC, DOT, FEMSA kab) yuav tsum tau ua
Offshore thiab deepwater daim ntaub ntawv xav tau superior toughness
X70 vs. Qib qis: X70 muab kwv yees li8% siab tshaj tawm lub zog tshaj X65(483 MPa vs . 448 MPa) thiab17% siab dua X60(483 MPa vs . 414 MPa), ua rau nws yog qhov kev xaiv zoo tshaj plaws rau ultra- siab- cov kab sib txuas uas cov qib qis yuav xav tau cov phab ntsa tuab heev.
Impact Test Temperature: Standard Charpy xeem yog nyob ntawm0 degreenrog 27J yam tsawg kawg nkaus, tab sis rau X70 PSL2 hauv kev xav tau daim ntawv thov, qhov kub qis dua (-20 degree, -30 degree, -45 degree) feem ntau teev. Rau cov haujlwm tseem ceeb xws li Tuam Tshoj-Russia East Route (中俄东线), kev ntsuas cuam tshuam ntawm -45℃nrog Ntau dua lossis sib npaug ntawm 100J lub zog yuav tsum tau.
Sour Service Option: Rau H₂S- muaj ib puag ncig, qhia meejX70 nrog NACE ua rawsthiab cov kev xav tau ntxiv nrog rau cov ntsiab lus sulfur siab tshaj plawsTsawg dua lossis sib npaug li 0.002%, Kev sim hardness (tsawg dua los yog sib npaug rau 248 HV10), thiab HIC/SSC xeem ib NACE MR0175/ISO 15156 .
Kev kho cua sov tsim: X70 PSL2 rau SSAW kav yog feem ntau ua nrogX70M(Thermomechanically dov / TMCP) rau kev txhim kho toughness thiab weldability, hoX70Q(Quenched thiab tempered) tej zaum yuav raug teev rau cov ntawv tshwj xeeb uas xav tau ntau tshaj lub zog sib xws.
SSAW Qhov Zoo rau X70 PSL2: Cov txheej txheem welding muab cov txiaj ntsig tshwj xeeb rau cov kav loj - txoj kab uas hla, siab - cov kav dej muaj zog:
Loj Loj Muaj peev xwm: Kev lag luam tuaj yeem tsim cov kav dej mus txog 160 "txoj kab uas hla - SSAW yog tib txoj kev uas tuaj yeem tsim cov kab ntau dua 56" rau X70 PSL2
Nqi Efficiency: 20-30% tus nqi qis dua LSAW rau cov kab loj loj
Ntev ntev: Txog li 50m ntev txo qhov kev xav tau ntawm kev vuam mus txog 40%
Kev Nyuaj Siab Distribution: Kauv weld seam disperses kev ntxhov siab ntau tusyees dua ncaj seam
Weld Zoo: Ob chav -sided submerged arc vuam kom tag nrho nkag nrog 100% NDT
📝 PSL2 vs. PSL1 Sib piv rau X70 SSAW Pipe
Cov lus hauv qab no qhia txog qhov sib txawv tseem ceeb ntawm PSL1 thiab PSL2 rau X70, qhia tias vim li cas PSL2 yog qhov kev xaiv zoo tshaj plaws rau ntiaj teb- cov haujlwm hauv chav kawm:
| Feature | PSL1 Qib X70 | PSL2 Qib X70 | Qhov tseem ceeb |
|---|---|---|---|
| Cov pa roj carbon (C) max | 0.26% | 0.12% | 54% txo- zoo dua weldability, qis HAZ hardness, txhim kho toughness |
| Sulfur (S) max | 0.030% | 0.015% | 50% txo- tseem ceeb rau toughness thiab HIC kuj |
| Phosphorus (P) max | 0.030% | 0.025% | Txhim kho toughness thiab weldability |
| Manganese (Mn) max | 1.65% | 1.70-1.80% | Me ntsis siab dua rau lub zog optimization |
| Yield zog | 483 MPa min xwb | 483-620 MPa ntau | Tiv thaiv tshaj - cov ntaub ntawv muaj zog uas tuaj yeem ua rau muaj teeb meem vuam |
| Tensile zog | 570 MPa min xwb | 565-760 MPa ntau | Xyuas kom zoo ib yam mechanical zog |
| Yield ratio (Y/T) | Tsis tau teev tseg | Tsawg dua lossis sib npaug li 0.93 | Xyuas kom txaus ductility |
| Kev ntsuam xyuas cuam tshuam | Tsis xav tau | Yuav tsum tau(27-100J @ teev temp) | Guarantee qis -kub toughness rau arctic/offshore |
| NDT Scope | Txuj | Kev dav dav, kev lees txais nruj dua | Kev kuaj pom zoo dua |
| Traceability | Batch qib | Pipe -los ntawm- yeeb nkab puv traceability | Ua kom tiav cov ntaub ntawv zoo |
| Daim ntawv pov thawj | xaiv tau | EN 10204 3.1/3.2 yuav tsum tau | Thib peb -kev pov thawj ntawm tog muaj |
| Zoo tshaj rau | Kev pabcuam dav dav, kab dej, huab cua huab cua | Kev pabcuam tseem ceeb, ultra-siab-siab, ntev-nruab nrab, arctic, offshore, dej tob, tswj kav |
🔧 Kev Tsim Kho Txheej Txheem rau API 5L PSL2 Qib X70 SSAW Yeeb Nkab
Cov txheej txheem tsim ua raws li kev txhim kho PSL2 kev tswj hwm zoo nrog rau kev sim thiab cov ntaub ntawv ntxiv, feem ntau suav nrog TMCP thev naus laus zis:
Kev npaj raw khoom: Kub-rolled steel coils raws li PSL2 chemistry yuav tsum tau (tshwj xeeb tshaj yog carbon Tsawg dua los yog sib npaug rau 0.12% thiab sulfur Tsawg dua los yog sib npaug rau 0.015%) yog leveled, soj ntsuam, thiab ntug-milled. Txhua kauj yog txheeb xyuas kom tag nrho traceability.
Kauv txoj kev: Cov hlau sawb txuas ntxiv tsim rau hauv cov duab cylindrical ntawm lub kaum ntse ntse tshwj xeeb (feem ntau 50-70 degree) ntawm chav tsev kub.
Submerged Arc Vuam: Ob chav -sided tsis siv neeg submerged arc vuam (sab hauv thiab sab nraud) tsim cov kauv seam nrog kev nkag mus tag nrho. Cov txheej txheem vuam yog tsim nyog raws li PSL2 qhov yuav tsum tau muaj kev tswj hwm nruj.
Tsis yog -Kev kuaj kev puas tsuaj: 100% ultrasonic (UT) thiab / lossis radiographic (RT) tshuaj xyuasntawm tag nrho cov vuam ntev nrog PSL2 kev lees paub. Cov chaw niaj hnub no siv cov tshuab UT txuas mus ntxiv nrog cov peev xwm ntsuas.
Kev Ntsuas Hydrostatic: Txhua cov yeeb nkab ib leeg raug kuaj xyuas kom ntseeg tau tias muaj kev ntseeg siab ntawm1.5x tsim siab; cov ntsuas ntsuas tau tswj tau thiab kaw nrog lub siab - lub sijhawm kab kos .
Mechanical Testing: Kev ntsuam xyuas tensile (tshuaj xyuas ob qho tib si min thiab max txwv), flattening tests, khoov xeem, thiabyuav tsum tau Charpy impact testntawm lub hauv paus hlau, vuam, thiab HAZ ntawm qhov ntsuas kub (piv txwv li, -20 degree, -45 degree).
Xaus Xaus: Xaus npaj (dawb lossis beveled ib ASME B16.25) rau kev vuam; kawg lub ntsej muag perpendicularity tswj.
Txheej: Cov txheej txheem sab nraud (3LPE, FBE, 3LPP, thee tar epoxy) thiab cov ntaub ntawv sab hauv muaj rau kev tiv thaiv corrosion. Rau tej yaam num loj xws li West-East Pipeline, 3PE/3LPE txheej yog tus qauv .
🏭 Major Project Applications
API 5L PSL2 Qib X70 SSAW kav yog siv nyob rau hauv lub ntiaj teb no qhov tseem ceeb tshaj plaws pipeline infrastructure tej yaam num:
| Qhov project | Daim ntawv thov | Specifications |
|---|---|---|
| West -East Gas Pipeline (西气东输) | Ntev -ntaub kis tau nkev thoob plaws Suav teb | D1219 × 18.4mm, X70 PSL2, 3PE coated |
| Tuam Tshoj-Russia East Route (中俄东线) | Hla - ciam teb kis tau tus mob nyob rau hauv huab cua txias heev | D1422mm, X70 PSL2, cuam tshuam kev kuaj ntawm -45 degree |
| Offshore Pipelines | Deepwater subsea hydrocarbon thauj | X70 PSL2 nrog DWTT, CTOD kuaj, pob zeb hnyav txheej |
| Hla -Lub Tebchaws Kab Kab | Ntev -kev ncua deb ntawm ntug hiav txwv hauv Europe, Middle East, Africa | X70 PSL2, DNV/TÜV kev pom zoo, thib peb- tog soj ntsuam |
| Arctic Pipelines | Gas kis tau tus mob nyob rau hauv tsis tshua muaj -kub ib puag ncig | X70 PSL2, cuam tshuam kev ntsuas ntawm -45 degree, TMCP steel |
🛡️ Txheej Options rau Corrosion Protection
API 5L PSL2 X70 kauv kav yuav muab tau nrog ntau yam txheej nyob ntawm daim ntawv thov ib puag ncig:
| Txheej hom | Zoo tshaj rau | Ntsiab nta | Hom Thickness |
|---|---|---|---|
| 3LPE (3-txheej polyethylene) | Ntev -cov kav dej faus deb (piv txwv li, West-Tebchaws Sab Hnub Tuaj) | Kev tiv thaiv corrosion zoo heev, muaj kev cuam tshuam zoo, adhesion zoo | 2.5-3.7 hli |
| FBE (Fusion Bonded Epoxy) | Roj & roj pipelines, nruab nrab kub | Muaj zog adhesion, tshuaj tiv thaiv, du nto | 300-600 μm |
| 3LPP (3-txheej polypropylene) | Offshore pipelines, siab -kev pabcuam kub | Kub kub tsis kam (txog 140 degree), zoo heev mechanical zog | 2.5-3.7 hli |
| Dual Txheej FBE (FBE-ARO) | Abrasive ib puag ncig, directional drilling | Txhim khu kev cuam tshuam thiab abrasion tsis kam | 400-800 μm |
| TPEP (Peb- txheej Polyethylene + Epoxy) | Kev xa dej, corrosive ib puag ncig | Internal epoxy rau ntws efficiency, sab nraud 3PE rau kev tiv thaiv corrosion | Kev cai |
| Pob zeb hnyav txheej (CWC) | Offshore / subsea pipelines | Tsis zoo buoyancy thiab mechanical tiv thaiv | 25-150 hli |
💰 Tus nqi txiav txim siab (2025-2026 kwv yees)
Raws li cov ntaub ntawv ua lag luam, API 5L PSL2 X70 kauv kav yog cov khoom lag luam zoo uas ua rau tus nqi siab dua vim kev kho cov tshuaj lom neeg, kev kho cua sov, thiab kev sim:
| Phab ntsa Thickness | Nqe Ntau (USD/ton) | Tej kev siv |
|---|---|---|
| 8-12 hli | $900 – $1,250 | Sib sau ua ke, faib |
| 12-18 hli | $1,150 – $1,550 | Siab -siab kis tau tus mob, ntev- kab hauv kab |
| 18-26 hli | $1,450 – $1,900 | Dej tob, arctic, kev pabcuam tseem ceeb, kev pabcuam qaub |
* Ceeb Toom: Cov nqi sib txawv raws li qhov kev txiav txim kom muaj nuj nqis, cuam tshuam rau kev ntsuas kub (xws li, -45℃commands premium), coating specifications (3LPE/FBE add $100-200/ton), certification level (3.1 vs 3.2), NACE compliance, and destination. Cov dej num loj nrog cov ntawv cog lus mus sij hawm ntev tuaj yeem tau txais cov nqi luv nqi.*
📝 Cov ntsiab lus tseem ceeb
Thaum xaiv PSL1 Qib X70 :
Tsis tshua muaj rau X70; PSL1 X70 muaj tab sis feem ntau loj X70 tej yaam num qhia PSL2
General high - kev pabcuam siab nyob rau hauv huab cua sov uas tsis muaj kev tswj xyuas qhov cuam tshuam
Tsis yog- daim ntawv thov tseem ceeb uas tus nqi them PSL2 tsis raug cai
Thaum xaiv PSL2 Qib X70 :
Ultra-siab-siab ntev- kis tau tus mob (tus qauv rau cov kab loj loj)
Tsawg- qhov kub thiab txias qhov kev pab cuam yuav tsum tau lav qhov cuam tshuam (arctic, huab cua txias ntawm -45 degree)
Kev pabcuam qaub (H₂S ib puag ncig yuav tsum tau NACE MR0175 / ISO 15156 nrog S Tsawg dua lossis sib npaug li 0.002%)
Offshore thiab dej tob siv
Kev ua raws cai (FERC, DOT, FEMSA kab, EU PED)
Tej yaam num uas yuav tsum tau toughness (DWTT, CTOD)
Hla -cov kab hauv lub teb chaws xav tau daim ntawv pov thawj thib peb - tog (DNV, TÜV, BV)
CO₂ thiab daim ntawv thov thauj hydrogen xav tau kev ncaj ncees siab
Kev kho cua sov tsim: X70 PSL2 rau SSAW feem ntau yogX70M(TMCP) rau kev txhim kho toughness thiab weldability. X70Q (quenched & tempered) tej zaum yuav muaj rau cov ntawv tshwj xeeb.
International sib npaug: X70 PSL2 muaj ntau qhov sib npaug thoob ntiaj teb:
ISO 3183 L485ME(TMCP) lubl485 qw(quenched & tempered)
GB/T 9711 L485 PSL2
DNV OS{0}}F101 Qib 485(zoo li lub zog theem)
CSA Z245.1 Qib 483
Ua kom tiav Specification: Thaum xaj, qhia meej:
API 5L PSL2, Qib X70M, SSAW (spiral welded), Loj (OD x WT), Ntev, Xaus Xaus
Impact Test kub: -20 degree, -30 degree, -45 degree]
Impact Energy Requirement: [piv txwv li, 27J, 40J, 100J yam tsawg kawg nkaus]
Kev kho cua sov: [M - TMCP yuav tsum tau ua rau X70 SSAW]
Txhua qhov kev xav tau ntxiv (kev pabcuam qaub nrog HIC / SSC kuaj, DWTT, CTOD)
Cov txheej txheem txheej: [piv txwv li, 3LPE, FBE] nrog thickness specifications
Daim ntawv pov thawj: EN 10204 Hom 3.1 lossis 3.2 nrog cov neeg tim khawv thib peb (SGS, BV, TÜV, DNV)
Qhov project-kev tso cai tshwj xeeb raws li xav tau
📝 Cov ntsiab lus
API 5L PSL2 Qib X70 Kauv Submerged Arc Welded kavyog covhwm, ntiaj teb no-chav xaiv xaiv rau feem ntau xav tau loj- txoj kab uas hla pipeline daim ntaub ntawv. Nrog yam tsawg kawg nkaus tawm lub zog ntawm483 MPa (70,000 psi)- kwv yees li8% siab dua X65thiab17% siab dua X60- cov kav dej no muab cov khoom siv ultra- siab- lub zog ntawm X70 nrog cov yam ntxwv zoo ntawm PSL2:guaranteed Charpy tej yam toughness ntawm arctic kub (tsawg li -45 degree), nruj heev chemistry tswj (tshwj xeeb tshaj yog cov pa roj carbon tsawg dua los yog sib npaug rau 0.12% thiab sulfur Tsawg dua los yog sib npaug rau 0.015%), siab tshaj plaws lub zog txwv (tsawg dua los yog sib npaug rau 620 MPa), tag nrho traceability, thiab ntau stringent xeem. .
Muaj nyob rau hauv diameters los ntawm219mm txog 4000mmnrog phab ntsa thicknesses rau40 hlithiab ntev mus txog50m, cov kav dej no yog tsim los siv tus nqi -kev tsim cov txheej txheem SSAW zoo nrog TMCP thev naus laus zis thaum ua tau raws li qhov xav tau nruj ntawm API 5L specification .
PSL2 Qib X70 yog qhov kev qhia tshwj xeeb rau:
Ntev -qhov deb siab - siab kis tau tus mobxav tau kev lav phib xaub (piv txwv li, West-East Pipeline)
Arctic thiab txias huab cua pipelinesyuav tsum muaj kev ntsuam xyuas ntawm -45 degree
Offshore thiab dej tob sivnrog kev tswj hwm tshuaj nruj thiab DWTT cov cai
Kev tswj kav kav dej(FERC, DOT, FEMSA) qhov twg PSL2 yuav tsum tau ua
Cov kev pabcuam qaubthaum tau teev tseg nrog NACE cov cai ntxiv
Hla - lub teb chaws kab kabYuav tsum muaj daim ntawv pov thawj thib peb (DNV, TÜV, BV)
Tseem ceeb infrastructure tej yaam numqhov twg yuav tsum tau txhim kho cov ntaub ntawv
Kev siv CO₂ thiab hydrogen thauj mus losxav tau ultra-siab ncaj ncees
Thaum txiav txim, xyuas kom meej koj qhiaAPI 5L PSL2 Qib X70M, SSAW, nrog rau qhov yuav tsum tau muaj, qhov ntsuas kub ntawm qhov ntsuas kub (feem ntau yog -20℃txog -45℃rau cov haujlwm tseem ceeb), kev xaiv kho cua sov (M rau TMCP), thiab cov txheej txheem los yog ntxiv raws li koj daim ntawv thov tshwj xeeb. Rau cov phiaj xwm thoob ntiaj teb cov kav dej, xav txog kev qhia meejDNV Hom Kev Pom Zoo, EN 10204 3.2 ntawv pov thawj, thiab thib peb -kev soj ntsuamlos xyuas kom meej tag nrho ua raws li cov qauv thoob ntiaj teb.
