API 5L PSL2 Qib X52 yog tus qauv, muaj dav, thiab feem ntau teev tus nqi hwm - qib khoom rau kev tsim Kauv Submerged Arc Welded (SSAW) steel kav[siv: 1, citation: 5, citation: 10]. Qhov kev sib xyaw ua ke no yog muab los ntawm ntau lub tuam txhab thoob ntiaj teb rau kev xa cov roj thiab cov roj tseem ceeb, cov kav dej tawm sab nrauv, thiab siab - cov ntawv thov siab uas yuav tsum tau ua kom zoo dua qub thiab muaj kev ruaj ntseg toughness [citation: 2, citation: 5, citation: 10].
Lub npe "API 5L PSL2 Qib X52 Kauv Submerged Arc Yeeb Nkab" sib txuas ua ke dav - siv X52 lub zog qib nrog qib PSL2 zoo dua qub, tsim los siv cov txheej txheem kev lag luam welding rau loj - txoj kab uas hla, siab - daim ntawv thov kev ntseeg tau [citation 5,2] citation:
📋 Cov ntsiab lus tseem ceeb rau API 5L PSL2 Qib X52 SSAW Yeeb Nkab
Cov lus hauv qab no qhia txog cov ntsiab lus tseem ceeb rau cov khoom no, raws li cov ntaub ntawv kev lag luam dav dav [citation: 1, citation: 2, citation: 5, citation: 8, citation: 10].
| Yam ntxwv | Kev piav qhia |
|---|---|
| Txuj | API 5L: "Specification for Line Pipe" (raws li ISO 3183) [citation: 2, citation: 5]. |
| 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, kev txwv lub zog siab tshaj plaws, yuav tsum tau kuaj Charpy, thiab nruj dua NDT [citation: 2, citation: 5, citation: 10]. |
| Qib Steel | X52 (L360): A nruab nrab - qib zog. Qhov kev xaiv "X52" qhia txog qhov tsawg kawg nkaus tawm lub zog ntawm52,000 psi (359 MPa)[siv: 2, citation: 4, citation: 6]. |
| ISO npe | L360[qhia: 2, citation: 8]. |
| Kev tsim khoom | Spiral (Helical) Submerged Arc Vuam (SSAW / HSAW): 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 tag nrho [citation: 1, citation: 5, citation: 9, citation: 10]. |
| Chemical Composition (max %) [citation: 1, citation: 2, citation: 4, citation: 8, citation: 10] | Cov pa roj carbon (C):0.22-0.24% max (nruj dua PSL1's 0.26-0.28%) Manganese (Mn):1.40% max Phosphorus (P):0.025% max (nruj dua PSL1's 0.030%) Sulfur (S): 0.015% max(50% txo los ntawm PSL1's 0.030%) Niobium + V + Ti:0.15% max Silicon (Si):0.45% max |
| Mechanical Properties [citation: 2, citation: 3, citation: 8, citation: 10] | Yield zog: 360-531 MPa (52,000-77,000 psi)range - ob qho tib siyam tsawg kawg thiab siab kawgqhia Tensile zog: 460-760 MPa (66,000-110,000 psi)ntau Yield-rau-Tensile Ratio:Tsawg dua los yog sib npaug0.93siab kawg Charpy Impact: Yuav tsum tau- feem ntau 27-41J ntawm qhov ntsuas kub (feem ntau 0 degree, -20 degree, lossis -30 degree) [citation: 2, citation: 3, citation: 10] |
| Hom Loj Ntau Yam [citation: 1, citation: 5, citation: 7, citation: 9, citation: 10] | Sab nraud txoj kab uas hla:219mm txog 4064mm (kwv yees . 8" rau 160") Phab ntsa Thickness:3.2mm txog 40mm (ntau ntau 5-26mm) Ntev:3 m rau 18 m txheem; mus txog 50 m muaj rau cov ntawv thov tshwj xeeb |
| Cov Kev Ntsuas Tseem Ceeb [citation: 2, citation: 5, citation: 10] | Yuav tsum tau Charpy Impact Testingntawm qhov ntsuas kub 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 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) Hydrostatic Testcwb cev Kev kuaj Hardnessrau qib kev pabcuam qaub |
| Cov ntawv thov dav [citation: 2, citation: 5, citation: 6, citation: 9] | Siab - cov roj thiab cov kav xa hluav taws xob siab; offshore pipelines; txias huab cua pipelines yuav tsum tau guaranteed toughness; natural gas sib sau ua ke thiab kis tau tus mob; tsim cov kab dej; pipeline chaw nres tsheb; tseem ceeb infrastructure; Kev tswj kav kav dej (FERC, DOT, FEMSA kab). |
| Daim ntawv pov thawj | Mill Test Certificate rauEN 10204 Hom 3.1nrog tag nrho cov qhabnias xeem thiab cov ntaub ntawv traceability. API monogram muaj los ntawm cov ntawv tso cai mills [citation: 1, citation: 5]. |
📊 API 5L PSL2 Qib X52: Tshuaj thiab Mechanical Properties
Tshuaj muaj pes tsawg leeg [citation: 1, citation: 2, citation: 4, citation: 8, citation: 10]
| Element | PSL2 Specification | PSL1 Sib piv |
|---|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.22-0.24% | 0.26-0.28% (kev tswj nruj dua) |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 1.40% | Tib yam |
| 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% |
| Nb+V+Ti | Tsawg dua lossis sib npaug li 0.15% | Tsis tau teev nyob rau hauv PSL1 |
Mechanical Properties [citation: 2, citation: 3, citation: 8, citation: 10]
| Khoom | PSL2 Kev Xav Tau | Qhov tseem ceeb |
|---|---|---|
| Yield zog | 360-531 MPa | Ob yam tsawg kawg nkaus thiab siab tshaj plaws tau teev tseg |
| Tensile zog | 460-760 MPa | Ob yam tsawg kawg nkaus thiab siab tshaj plaws 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 27-41J @ teev temp | Yuav tsum tau, tsis zoo li PSL1 |
📏 Dimensional Specifications
API 5L qhia txog cov kev kam rau siab hauv qab no rau cov kav dej SSAW [citation: 1, citation: 3, citation: 7]:
| 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 | Tsawg dua los yog sib npaug li 5 mm | ± 0.5 hli |
| 5mm mus rau 15mm | ±0.1t | |
| Loj dua los yog sib npaug li 15 mm | ± 1.5 hli | |
| 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") [citation: 1, citation: 5, citation: 7, citation: 10]
📊 Qhov twg X52 haum ntawm API 5L PSL2 Qib
X52 yog positioned raws li qhov feem ntau "hloov qib" nruab nrab ntawm qis-siab sib sau ua ke thiab siab- cov kav xa dej siab [citation:2, citation:6]:
| Qib | Tawm tswv yim (min, MPa) | Tawm tswv yim (max, MPa) | Daim ntawv thov |
|---|---|---|---|
| B | 245 | 448 | Tsawg-kev sib sau ua ke, kev siv hluav taws xob [citation:2, citation:3] |
| X42 | 290 | 496 | Sib sau cov kab, faib [citation:2, citation:3] |
| X46 | 317 | 524 | Nruab nrab-kev sib sau siab |
| X52 | 360 | 531 | Kev sib kis, sib sau ua ke, txheej txheem - NTAU NTAU[Citation: 2, citation: 3] |
| X56 | 386 | 544 | Cov kav xa dej |
| X60 | 414 | 565 | Siab -siab kis tau tus mob [citation:2, citation:3] |
| X65 | 448 | 600 | Siab -siab, offshore [citation:2, citation:3] |
| X70 | 483 | 621 | Ntev -nruab nrab, siab- siab [citation:2, citation:3] |
| X80 | 552 | 690 | Ultra-siab- cov kab hauv siab [citation:2, citation:3] |
🔍 Cov ntsiab lus tseem ceeb kom nkag siab
Dab tsi "PSL2 Qib X52" txhais tau tias: Qhov kev qhia tshwj xeeb no sib xyaw ua ke dav dav - siv qib X52 (360 MPa yam tsawg kawg nkaus tawm los) nrog cov kev xav tau zoo ntawm PSL2. Qhov tshwm sim yog ib lub yeeb nkab nrog360 MPa yam tsawg yield zoguas kuj ntaguaranteed cuam tshuam toughness, nruj chemistry tswj (tshwj xeeb tshaj yog leej faj Tsawg dua los yog sib npaug rau 0.015%), siab tshaj plaws lub zog txwv (Less tshaj los yog sib npaug rau 531 MPa), thiab tag nrho traceability[siv: 2, citation: 5, citation: 10].
Vim li cas thiaj xaiv PSL2 Qib X52?PSL2 Qib X52 tau teev tseg thaum [citation:2, citation:5, citation:10]:
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 yam rau kev tswj kav)
Txhim kho cov ntaub ntawv thiab traceability yog xav tau los ntawm code
Kev txwv lub zog siab tshaj plaws xav tau kev tswj xyuas kom tsis txhob muaj teeb meem ntawm kev sib tsoo
Cov kev pabcuam qaub yuav tsum muaj cov ntsiab lus sulfur tsawg (tsawg dua lossis sib npaug li 0.015%)
Kev tswj hwm kev ua raws cai (FERC, DOT, FEMSA kab) yuav tsum tau ua
Cov ntawv thov tseem ceeb uas tus nqi them rau PSL2 yog qhov ncaj ncees
Impact Test Temperature: Standard Charpy xeem yog nyob ntawm0 degreenrog 27J yam tsawg kawg nkaus, tab sis qhov kub thiab txias (-20 degree, -30 degree, -45 degree) tuaj yeem teev rau kev thov kev thov [citation: 2, citation: 10]. Qee lub tuam txhab muab X52 nrog rau kev cuam tshuam ntawm -30℃raws li tus qauv.
Sour Service Option: Rau H₂S- muaj ib puag ncig, qhia meejX52N or X52 QSCov qib nrog cov kev xav tau ntxiv nrog rau kev kuaj tawv nqaij (tsawg dua lossis sib npaug ntawm 248 HV10) thiab HIC / SSC xeem ntawm NACE MR0175 / ISO 15156 [citation: 2, citation: 4].
SSAW Qhov Zoo rau PSL2: Cov txheej txheem kauv vuam muaj cov txiaj ntsig tshwj xeeb rau cov kav loj -inch PSL2 kav [citation:5, citation:7, citation:10]:
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 X52 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: 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 X52 SSAW Yeeb Nkab
Cov lus hauv qab no qhia txog qhov sib txawv tseem ceeb ntawm PSL1 thiab PSL2 rau X52, qhia tias vim li cas PSL2 yog qhov kev xaiv zoo tshaj [citation: 2, citation: 5, citation: 8, citation: 10]:
| Feature | PSL1 Qib X52 | PSL2 Qib X52 | Qhov tseem ceeb |
|---|---|---|---|
| Cov pa roj carbon (C) max | 0.26-0.28% | 0.22-0.24% | Zoo dua weldability, qis dua HAZ hardness |
| 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 |
| Yield zog | 360 MPa min xwb | 360-531 MPa ntau | Tiv thaiv tshaj - cov ntaub ntawv muaj zog uas tuaj yeem ua rau muaj teeb meem vuam |
| Tensile zog | 460 MPa min xwb | 460-760 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(27-41J @ teev temp) | Guarantee qis -kub toughness |
| Carbon sib npaug | Tsis xav tau | Muab xam thiab tswj | Xyuas kom zoo teb weldability |
| Hardness Tswj | Tsis tau teev tseg | Tsawg dua los yog sib npaug rau 250 HV10 (qab zib: 248 HV10) | Qhov tseem ceeb rau kev siv qaub qaub |
| Zoo tshaj rau | Kev pabcuam dav dav, kab dej, huab cua huab cua | Kev pabcuam tseem ceeb, qis-kub, offshore, tswj kav kav dej |
🔧 Kev Tsim Kho Txheej Txheem rau API 5L PSL2 Qib X52 SSAW Yeeb Nkab
Cov txheej txheem tsim ua raws li kev txhim kho PSL2 kev tswj hwm zoo nrog rau kev sim ntxiv thiab cov ntaub ntawv yuav tsum tau [citation: 1, citation: 9, citation: 10]:
Kev npaj raw khoom: Kub-rolled steel coils ntsib PSL2 chemistry yuav tsum tau (tshwj xeeb tshaj yog tsis tshua muaj sulfur Tsawg tshaj los yog sib npaug rau 0.015%) yog leveled, soj ntsuam, thiab ntug-milled. Txhua lub kauj raug txheeb xyuas kom paub meej tag nrho [citation: 1, citation: 10].
Kauv txoj kev: Cov sawb hlau tsis tu ncua ua rau cov duab cylindrical ntawm lub kaum sab xis tshwj xeeb (feem ntau 50-70 degree) ntawm chav tsev kub [citation: 1, citation: 5].
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 rau tag nrho. Cov txheej txheem vuam yog tsim nyog raws li PSL2 qhov yuav tsum tau muaj kev tswj hwm nruj [citation: 1, citation: 9].
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 siv automated nruam UT systems [citation: 1, citation: 5, citation: 10].
Kev Ntsuas Hydrostatic: Txhua cov yeeb nkab ib leeg raug kuaj xyuas kom ntseeg tau siab ncaj ncees; xeem tsis tau tswj thiab kaw nrog siab -time charts [citation:1, citation:5].
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 [citation: 2, citation: 5, citation: 10].
Xaus Xaus: Xaus npaj (dawb lossis beveled ib ASME B16.25) rau kev vuam; kawg lub ntsej muag perpendicularity tswj kom tsawg dua lossis sib npaug li 3 hli [citation: 1, citation: 9].
Txheej: Cov txheej txheem sab nraud (3LPE, FBE, 3LPP, thee tar epoxy) thiab cov ntaub ntawv sab hauv muaj rau kev tiv thaiv corrosion [citation: 1, citation: 9, citation: 10].
🏭 Daim Ntawv Thov thiab Kev Xaiv Qhov Tseeb
API 5L PSL2 Qib X52 SSAW kav yog siv rau hauv cov ntawv thov uas yuav tsum tau ua kom zoo dua qub [citation: 2, citation: 5, citation: 6, citation: 9, citation: 10]:
| Daim ntawv thov | Vim li cas PSL2 Qib X52 tau qhia | Yam yuav tsum tau muaj |
|---|---|---|
| Siab -Hloov Gas Transmission | Guaranteed Charpy cuam tshuam toughness ntawm 0℃mus rau -30℃ua kom tus cwj pwm zoo nyob rau lub caij ntuj no; lub zog siab tshaj plaws txwv tsis pub muaj teeb meem vuam | Kev ntsuas cuam tshuam ntawm -20 degree, 100% NDT |
| Offshore Pipelines | Tight sulfur tswj (tsawg dua lossis sib npaug li 0.015%) muab HIC tsis kam; tag nrho traceability yuav tsum tau; yield zog ntau yam kom zoo ib yam khoom | S Tsawg dua lossis sib npaug li 0.015%, PSL2 ntawv pov thawj, thib peb-kev tshuaj xyuas |
| Kev nyab xeeb txias / Arctic Pipelines | Kev ntsuam xyuas cuam tshuam ntawm -45℃kom ntseeg tau tias tawg tsis kam nyob rau hauv qhov kub tsis tshua muaj; superior toughness ntawm PSL2 qib | Charpy ntawm -45 degree, DWTT kuaj |
| Kev tswj kav kav dej | FERC/DOT jurisdictions feem ntau xav tau PSL2 zoo rau tag nrho cov kav dej; siab tshaj tawm lub zog tiv thaiv ntau tshaj -kev sib tw hauv welds | Tag nrho cov ntaub ntawv, PSL2 ntawv pov thawj |
| Sour Service | Cov ntsiab lus tsis tshua muaj leej faj (tsawg dua lossis sib npaug rau 0.002% rau cov qib qaub) nrog rau kev kuaj tawv tawv (tsawg dua lossis sib npaug ntawm 248 HV10) ua tau raws li NACE MR0175 cov cai | HIC/SSC xeem, kev soj ntsuam hardness |
| Pipeline Chaw Piping | Complex fabricated Cheebtsam xav tau cov khoom zoo ib yam thiab lav toughness | PSL2 ntawv pov thawj, cuam tshuam kev kuaj |
| Subsea Pipelines | Cov ntawv thov tseem ceeb xav tau PSL2 qhov kev sim ua kom zoo dua qub, kev taug qab, thiab kev tswj kom zoo | PSL2, DWTT, CTOD xeem |
📝 Cov ntsiab lus tseem ceeb
Tus nqi hwm: PSL2 Qib X52 feem ntau raug nqi10-20% ntau dua PSL1 Qib X52vim muaj kev ntsuam xyuas ntxiv, kev tswj cov tshuaj lom neeg nruj dua, thiab txhim kho cov ntaub ntawv xav tau. Tus nqi yog tsim nyog rau cov ntawv thov uas tau lees tias kev ua tau zoo yog qhov tseem ceeb.
Muaj: PSL2 Qib X52 yogyooj yim muajlos ntawm cov tuam txhab loj thoob ntiaj teb, vim nws yog ib qho ntawm feem ntau tsim PSL2 qib [citation: 1, citation: 5, citation: 9, citation: 10].
Kev kho cua sov tsim: X52 PSL2 tej zaum yuav suav nrog cov lus xaus qhia txog kev kho cua sov [citation:2, citation:4]:
X52N: Normalized (rau kev txhim kho cov qauv nplej thiab cov khoom sib xws)
X52M: Thermomechanically dov (TMCP - rau kev txhim kho toughness thiab weldability)
X52Q: quenched thiab tempered (rau siab tshaj plaws lub zog uniformity)
International sib npaug: X52 PSL2 muaj ntau qhov sib npaug thoob ntiaj teb:
EN 10208-2 L360NB / MB
DIN 17172 STE 360.7 TM
GB/T 9711 L360 PSL2
TS EN ISO 3183 L360
Ua kom tiav Specification: Thaum xaj, qhia [citation:5, citation:9, citation:10]:
API 5L PSL2, Qib X52, SSAW (spiral welded), Loj (OD x WT), Ntev, Xaus Xaus
Impact Test kub: [piv txwv li, 0 degree, -20 degree, -30 degree, -45 degree]
Kev kho cua sov: [N, M, Q] yog tias xav tau
Txhua qhov kev xav tau ntxiv (kev pabcuam qaub, ntxiv NDT, kuaj tawv)
Cov txheej txheem txheej: [piv txwv li, 3LPE, FBE, 3LPP]
🛡️ Txheej Options rau Corrosion Protection
API 5L PSL2 X52 kauv cov kav dej tuaj yeem muab tau nrog ntau yam txheej txheej nyob ntawm daim ntawv thov ib puag ncig [citation: 1, citation: 9, citation: 10]:
| Txheej hom | Zoo tshaj rau | Ntsiab nta | Hom Thickness |
|---|---|---|---|
| 3LPE (3-txheej polyethylene) | Underground pipelines | 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 | Muaj zog adhesion, tshuaj tiv thaiv, du nto | 300-600 μm |
| 3LPP (3-txheej polypropylene) | Offshore pipelines | Kub kub tsis kam (txog 140 degree), zoo heev mechanical zog | 2.5-3.7 hli |
| Coal Tar Epoxy | Marine ib puag ncig | Tus nqi -zoo, siab noo noo tsis kam | 400-600 μm |
| Internal Epoxy txheej | Corrosive media | Txo kev sib txhuam, tiv thaiv corrosion, txhim kho kev khiav hauj lwm | 250-500 μm |
💰 Tus nqi txiav txim siab (2025 kwv yees)
Raws li cov ntaub ntawv ua lag luam, API 5L PSL2 X52 kauv kav feem ntau yog los ntawm$750 rau $1,350 ib tujNyob ntawm phab ntsa thickness thiab specifications:
| Phab ntsa Thickness | Nqe Ntau (USD/ton) | Tej kev siv |
|---|---|---|
| 6-10 hli | $750 – $1,050 | Sib sau cov kab, kev xa dej |
| 12-18 hli | $1,000 – $1,350 | High -siab kis tau tus mob, offshore |
| 20-26 hli | $1,300 – $1,700 | Dej tob, arctic, kev pabcuam tseem ceeb |
Lus Cim: Cov nqi sib txawv raws li kev txiav txim kom muaj nuj nqis, txheej txheej, cuam tshuam qhov ntsuas kub, thiab qhov chaw.
📝 Cov ntsiab lus
API 5L PSL2 Qib X52 Kauv Submerged Arc Welded kavyog covtus qauv, hwm - kev xaiv zoo rau kev thov cov raj xa dej thoob ntiaj teb[siv: 2, citation: 5, citation: 10]. Nrog yam tsawg kawg nkaus tawm lub zog ntawm360 MPa (52,000 psi), cov kav dej no muab cov khoom siv txhim khu kev qha ntawm X52 - qib sib kis tau zoo tshaj plaws - nrog rau cov yam ntxwv zoo ntawm PSL2:guaranteed Charpy tej yam toughness, nruj chemistry tswj (tshwj xeeb tshaj yog leej faj Tsawg dua los yog sib npaug rau 0.015%), siab tshaj plaws lub zog txwv (Less tshaj los yog sib npaug rau 531 MPa), tag nrho traceability, thiab ntau stringent xeem[npe: 2, citation: 5, citation: 8, citation: 10].
Muaj nyob rau hauv diameters los ntawm219mm txog 4000mmnrog phab ntsa thicknesses rau40 mmthiab ntev mus txog50m, cov kav dej no yog tsim los siv tus nqi- cov txheej txheem tsim khoom SSAW tau zoo thaum ua tau raws li cov kev cai nruj ntawm API 5L specification [citation:1, citation:5, citation:7, citation:10].
PSL2 Qib X52 yog qhov kev qhia tshwj xeeb rau [citation: 2, citation: 5, citation: 6, citation: 9, citation: 10]:
Siab -pas kis tau tus mobyuav tsum tau guaranteed tej yam khoom
Offshore thiab marine applicationsnrog kev tswj tshuaj nruj heev
Kev nyab xeeb txias thiab cov kav dej arcticyuav tsum muaj kev ntsuam xyuas ntawm -30℃rau -45 degree
Kev tswj kav kav dej(FERC, DOT, FEMSA) qhov twg PSL2 yuav tsum tau ua
Cov kev pabcuam qaubthaum teev nrog cov kev xav tau ntxiv
Tseem ceeb infrastructure tej yaam numqhov twg yuav tsum tau txhim kho cov ntaub ntawv
Thaum txiav txim, xyuas kom meej koj qhiaAPI 5L PSL2 Qib X52, SSAW, nrog rau qhov yuav tsum tau muaj qhov ntev, qhov ntsuas qhov ntsuas kub, thiab cov txheej txheem lossis cov kev xav tau ntxiv raws li koj daim ntawv thov tshwj xeeb [citation: 5, citation: 9, citation: 10].
