API 5L PSL2 X46 DSAW Steel Yeeb Nkab
Lub ntsiab lus tseem ceeb
API 5L PSL2 Qib X46 DSAW (Ob chav-Sided Submerged Arc Welded) steel yeeb nkabyog ib qho nruab nrab - zog kab yeeb nkab uas tsim los rau American Petroleum Institute specification rau cov kav dej thauj mus los. Qhov kev xaiv "X46" qhia qhov tsawg kawg nkaus tawm lub zog ntawm46,000 psi (317-320 MPa), tso nws ntawm X42 thiab X52 hauv API 5L qib ntaiv.
PSL2 (Product Specification Level 2) yog tustxhim kho qib zoonrog cov kev cai nruj dua li PSL1, suav nrog kev tswj cov tshuaj lom neeg nruj dua (tsawg dua cov pa roj carbon thiab sulfur), yuav tsum tau kuaj Charpy cuam tshuam, kev txwv lub zog siab tshaj plaws, tawm los- rau- tensile ratio tswj, thiab tag nrho traceability.
DSAW manufacturing txheej txheem-tseem hu ua LSAW (Longitudinal Submerged Arc Vuam) los yog SSAW (Spiral Submerged Arc Welding)- yog ib qho kev siab - vuam txoj kev ncaj ncees uas siv ob sab hauv thiab sab nraud welds, tsim ib qhoib leeg siab -zoo weld nugget. Cov txheej txheem no yog tsim tshwj xeeb rauloj- txoj kab uas hla, tuab- phab ntsa kavsiv rau hauv kev thov pipeline thov.
Lub npe piav qhia
| Ib feem | Lub ntsiab lus |
|---|---|
| API | Lub koom haum American Petroleum |
| 5L | Specification rau kab yeeb nkab siv nyob rau hauv pipeline tsheb thauj mus los systems |
| PSL2 | Khoom Specification Qib 2 - txhim kho qib zoo nrog cov kev cai nruj dua (yuav tsum tau kuaj xyuas, nruj dua chemistry, max zog txwv) |
| X46 | Qib kev xaiv: "X" qhia qib pipeline, "46" sawv cev rau qhov tsawg kawg nkaus yield zog hauv ksi (46,000 psi / 317-320 MPa) |
| DSAW | Muab ob npaug rau-Sided Submerged Arc Vuam - ob qho tib si sab hauv thiab sab nraud yog siv; Lub vuam arc yog submerged hauv granular flux thaum vuam |
Ntsiab Specifications
| Yam ntxwv | Kev piav qhia |
|---|---|
| Txuj | API 5L (46th Edition, ua raws li ISO 3183) |
| Khoom Specification Level | PSL2 - txhim kho qib zoo |
| Qib | X46 (L320 hauv ISO cim) |
| Yam tsawg kawg nkaus Yield Strength | 317-320 MPa (46,000-46,400 psi) |
| Maximum Yield zog | 524-525 MPa (76,000-76,100 psi)- PSL2 qhia ob qho tib si min thiab max |
| Yam tsawg kawg Tensile Strength | 434-435 MPa (63,000-63,100 psi) |
| Maximum Tensile Strength | 758-760 MPa (110,000-110,200 psi) |
| Yield-rau-Tensile Ratio (max) | 0.93- xyuas kom txaus ductility |
| Kev tsim khoom | DSAW (Ob chav -Sided Submerged Arc Vuam) / LSAW / SSAW |
| Size Range (DSAW/LSAW/SSAW) | 219mm txog 4064mm(8 "mus rau 160") OD - raug rau DSAW |
| Phab ntsa Thickness | 5.0mm txog 40mm (txog 60mm rau kev siv tshwj xeeb) |
| Ntev | 6 m rau 12 m txheem; mus txog 18 m muaj |
| Xaus Xaus | Plain xaus, beveled xaus (30℃bevel kaum), threaded, grooved |
| Kev Xa Khoom | X46M(Thermomechanical dov / TMCP) - feem ntau;X46N(Normalized),X46Q(Quenched thiab tempered) muaj |
Tshuaj muaj pes tsawg leeg (PSL2 Requirements)
Tshuaj muaj pes tsawg leeg rau PSL2 X46 (welded yeeb nkab)
| Element | Ntau tshaj % | PSL1 Sib piv |
|---|---|---|
| Cov pa roj carbon (C) | 0.22% | PSL1 X46: 0.26-0.28% - tswj nruj dua |
| Silicon (Si) | 0.45% | Tsis tau teev rau PSL1 |
| Manganese (Mn) | 1.40% | PSL1 X46: 1.40% - qhov sib xws |
| Phosphorus (P) | 0.025% | PSL1: 0.030% - nruj dua |
| Sulfur (S) | 0.015% | PSL1: 0.030% -50% txo |
| Vanadium (V) | 0.07% max | Micro-Alloying rau cov nplej refinement |
| Niobium (Nb) | 0.05% max | Micro{0}} alloying rau lub zog |
| Titanium (Ti) | 0.04% max | Micro-Alloying rau cov nplej refinement |
| Carbon sib npaug (CEIIW) | 0.43% max | Yuav tsum tau thiab tswj rau weldability |
* Ceeb toom: Tag nrho cov ntsiab lus ntawm micro-alloying ntsiab (Nb + V + Ti) tsis tshaj 0.15%. PSL2 yuav tsum muaj cov pa roj carbon sib npaug (CE) suav thiab tswj kom ntseeg tau tias qhov chaw zoo weldability.*
Mechanical Properties
| Khoom | PSL2 Kev Xav Tau | PSL1 Sib piv |
|---|---|---|
| Yield zog (min) | 317-320 MPa (46,000-46,400 psi) | Yam tsawg kawg nkaus |
| Yield zog (max) | 524-525 MPa (76,000-76,100 psi) | Tsis tau teev tseg |
| Tensile zog (min) | 434-435 MPa (63,000-63,100 psi) | Yam tsawg kawg nkaus |
| Tensile zog (max) | 758-760 MPa (110,000-110,200 psi) | Tsis tau teev tseg |
| Yield-rau-Tensile Ratio | 0.93 max | Tsis tau teev tseg |
| Elongation | Ib tus qauv API 5L (vim los ntawm phab ntsa thickness) | Tib yam mis nyuj |
| Charpy Impact (CVN) | Yuav tsum tau- feem ntau 27J ntawm 0℃lossis -20 degree | Tsis xav tau |
| Hardness (max) | 250 HV 10(Kev pabcuam qaub: 248 HV10) | Tsis tau teev tseg |
X46 vs. Qhov sib piv Qib Sib Piv (PSL2)
| Qib | Yield zog (min) | Yield zog (max) | Tensile zog (min) | Daim ntawv thov |
|---|---|---|---|---|
| X42 | 290 MPa (42 ksi) | 496 MPa (72 ksi) | 414 MPa (60 ksi) | Sib sau ua ke, faib |
| X46 | 317-320 MPa (46 ksi) | 524-525 MPa (76 ksi) | 434-435 MPa (63 ksi) | Siab dua -siab kis |
| X52 | 359 MPa (52 ksi) | 531 MPa (77 ksi) | 455 MPa (66 ksi) | General kis tau tus mob |
| X56 | 386 MPa (56 ksi) | 545 MPa (79 ksi) | 490 MPa (71 ksi) | Siab dua -siab kis |
| X60 | 414 MPa (60 ksi) | 565 MPa (82 ksi) | 517 MPa (75 ksi) | High -siab kis |
* X46 muaj kwv yees li 10% siab dua qhov muaj zog tshaj X42 thiab ua haujlwm raws li tus nqi - kev xaiv nruab nrab zoo thaum X42 qis dua - lub zog tab sis X52 yuav dhau - qhia.*
Delivery Conditions (Kev kho cua sov Suffixes)
PSL2 X46 DSAW cov kav dej tau muab nrog cov lus kawg qhia txog kev kho cua sov:
| Lub ntsiab lus | Qhov xwm txheej | Daim ntawv thov |
|---|---|---|
| X46N | Li qub | General kis tau tus mob, txhim kho grain qauv |
| X46Q | Quenched thiab tempered | Maximum zog uniformity |
| X46M | Thermomechanical yob (TMCP) | Feem ntau - txhim kho toughness thiab weldability |
| x46 qw | Quenched thiab tempered + Sour service | H₂S ib puag ncig nrog NACE ua raws |
| X46 MAS | Thermomechanical dov + Kev pabcuam qaub | H₂S ib puag ncig nrog txhim kho toughness |
Nco tseg: Suffix "S" qhia tias Sour Service thov rau NACE MR0175.
Dimensional Specifications
| Parameter | Ntau Yam / Tolerance |
|---|---|
| Sab nraud txoj kab uas hla | 219mm txog 4064mm(8 "mus rau 160") - ib txwm DSAW / SSAW ntau yam |
| Phab ntsa Thickness | 5.0mm txog 40mm (txog 60mm rau kev siv tshwj xeeb) |
| Txoj kab uas hla Tolerance | ± 0.75% ntawm OD (tseem ceeb); ± 1% rau txoj kab uas hla loj |
| Phab ntsa Thickness kam rau ua | +15% / -12.5% ntawm nominal (tus qauv) |
| Ntev | 6 m rau 12 m txheem; mus txog 18 m muaj |
| Tawm ntawm - ntawm - Roundness | Tsawg dua lossis sib npaug li 1% ntawm OD teev |
Yam Loj Muaj (API 5L Qib X46 DSAW/SSAW):
| OD (inch) | OD (mm) | Phab ntsa Thickness Range (mm) |
|---|---|---|
| 16" | 406 | 6.0 - 14.0 |
| 20" | 508 | 6.0 - 16.0 |
| 24" | 610 | 6.0 - 18.0 |
| 30" | 762 | 7.0 - 21.0 |
| 36" | 914 | 8.0 - 24.0 |
| 40" | 1016 | 8.0 - 26.0 |
| 48" | 1219 | 9.0 - 28.0 |
| 56" | 1422 | 10.0 - 29.0 |
| 60" | 1524 | 10.0 - 29.0 |
| 64" | 1626 | 10.0 - 30.0 |
| 72" | 1829 | 10.0 - 30.0 |
DSAW/SSAW/LSAW Manufacturing Process
Ob chav -Sided Submerged Arc Vuam (DSAW), tseem hu ua Spiral Submerged Arc Vuam (SSAW) los yog Longitudinal Submerged Arc Vuam (LSAW), yog ib qho kev ua haujlwm siab - siv feem ntau rau cov kav loj - txoj kab uas hla.
Txheej txheem piav qhia
Vuam arc yog submerged hauv granular fluxThaum vuam, tiv thaiv cov vuam los ntawm atmospheric paug
Ob sab hauv thiab sab nraud welds yuav tsum tau, feem ntau ua tiav hauv cov txheej txheem sib cais
Cov sib cais welds noj ib feem ntawm lwm yam, ua rau aib leeg siab -zoo weld nugget
Txoj kev tsim
| Txoj kev | Kev piav qhia | Hom kab |
|---|---|---|
| SSAW (kauv) | Hlau sawb txuas ntxiv tsim rau hauv cov duab cylindrical ntawm lub kaum ntse ntse tshwj xeeb; pheej yig tshaj rau cov kab loj loj | 219-4064 hli (8 "-160") |
| LSAW (Longitudinal/JCOE) | Progressive J-C-O cov kauj ruam (J-shape → C-shape → O-shape), nthuav dav tom qab vuam | 406-1626 hli (16 "-64") |
| UAE | Phaj nias rau hauv U-puab, ces O-puab, nthuav dav tom qab vuam | 508-1118 hli (20 "-44") |
Txheej txheem txheej txheem
Phaj/Coil xaiv- Hlau daim hlau / coils lub rooj sib tham API 5L PSL2 X46 yuav tsum (tag nrho tua, nplua hlau hlau)
Ntug Kev Npaj- Ntug yog beveled los tsim V-puab zawj
tsim- Hlau daim hlau / coils yog tsim rau hauv cov duab cylindrical siv JCOE / UOE / kauv txoj kev tsim
Tack Vuam- Cov phaj tsim yog tack-welded kom zoo li qub
Ob chav Submerged Arc Vuam- Cov yeeb nkab seam welded rau ob sab hauv thiab sab nrauv
Txias Expansion- Cov yeeb nkab yuav raug nthuav mus txog 1.5% kom ua tiav qhov kawg ntawm OD
Ultrasonic soj ntsuam- Seam tshuaj xyuas los ntawm kev txuas ntxiv ultrasonic tsis siv neeg qhov tsis pom kev
Hydrostatic Pressure Test-Txhua cov yeeb nkab tau raug kuaj xyuas hydrostatic siab
Ua tiav- Xaus kev, beveling, txheej, thiab kos npe raws li specifications
Kev Ntsuas & Kev Ntsuam Xyuas (PSL2)
| Hom kev xeem | Kev xav tau | Sau ntawv |
|---|---|---|
| Tshuaj ntsuam xyuas | Rau qhov kub ntau | Tighter PSL2 txwv |
| Tensile Test | Rau ntau | Txheeb xyuas qhov txwv min thiab max |
| Yield-rau-Tensile Ratio | Tsawg dua lossis sib npaug li 0.93 | Yuav tsum tau ua pov thawj |
| Charpy Impact Test (CVN) | Yuav tsum tau | Yuav tsum muaj rau txhua qib PSL2; Feem ntau 27J ntawm 0℃lossis -20 degree |
| Flattening Test | Yuav tsum tau | Txheeb xyuas qhov ductility thiab weld kev ncaj ncees |
| Khoov Test | Yuav tsum tau | Verifies weld kev ncaj ncees |
| Hydrostatic Test | Txhua lub raj | Kev ntsuas siab ncaj ncees |
| Kev soj ntsuam ultrasonic (UT) | 100% ntawm weld seam | Yuav tsum tau rau PSL2 |
| X-Ray Inspection (RT) | Thaum tau teev tseg | Rau kev siv tseem ceeb; 100% muaj raws li qhov kev thov |
| Kev kuaj Hardness | Rau kev pabcuam qaub | Hardness daim ntawv qhia yuav tsum tau; Tsawg dua lossis sib npaug rau 250 HV10 (Less dua lossis sib npaug rau 248 HV10 rau qaub) |
| Kev xeem HIC/SSC | Rau kev pabcuam qaub | Raws li NACE MR0175 / ISO 15156 |
| DWTT (Drop Weight Tear Test) | Rau cov kev siv tseem ceeb | Fracture toughness xyuas |
| Dimensional soj ntsuam | 100% | Raws li tus qauv tolerances |
| Mill Test Certificate | EN 10204 Hom 3.1B | Muab tag nrho cov kev xeem |
PSL1 vs. PSL2 Sib piv rau X46
| Feature | PSL1 X46 | PSL 2 X46 | Qhov tseem ceeb |
|---|---|---|---|
| Cov pa roj carbon (C) max | 0.26-0.28% | 0.22% | Tighter tswj kom zoo weldability |
| 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 | 317-320 MPa min xwb | 317-524 MPa ntau | Tiv thaiv tshaj - cov ntaub ntawv muaj zog |
| Tensile zog | 434-435 MPa min xwb | 434-758 MPa ntau | Xyuas kom zoo ib yam mechanical zog |
| Yield-rau-Tensile Ratio | Tsis tau teev tseg | Tsawg dua lossis sib npaug li 0.93 | Xyuas kom txaus ductility |
| Charpy Impact Test | Tsis xav tau | Yuav tsum tau | Guarantee qis -kub toughness |
| Carbon sib npaug (CE) | Tsis xav tau | Muab xam thiab tswj | Xyuas kom zoo teb weldability |
| NDT Requirements | Txuj | 100% UT yuav tsum taurau PSL2 | Kev kuaj pom zoo dua |
| Traceability | Batch qib | Pipe -los ntawm- yeeb nkab puv traceability | Ua kom tiav cov ntaub ntawv zoo |
| Hardness Tswj | Tsis tau teev tseg | Tsawg dua lossis sib npaug li 250 HV10(qaub: Tsawg dua lossis sib npaug rau 248 HV10) | Qhov tseem ceeb rau kev siv qaub qaub |
| Hom kev siv | Kev pabcuam dav dav, kab dej, tsis yog - tseem ceeb | Kev pabcuam tseem ceeb, kev pabcuam qaub, qis kub |
Cov ntawv thov siv
| Daim ntawv thov | Kev piav qhia |
|---|---|
| Roj thiab roj kis tau tus mob | Nruab nrab-rau- cov kav dej siab siab rau cov roj av thiab cov nkev ntuj |
| Natural Gas Sib Sau Kab | Txuas qhov dej mus rau cov chaw ua haujlwm rau hauv nroog lossis hauv cheeb tsam kev faib roj |
| Kev xa dej Mains | Loj - txoj kab uas hla hauv nroog thiab cov kav dej muaj |
| Muaj Txheej Txheem Piping | Refineries, tshuaj nroj tsuag, tsim hluav taws xob |
| Sib sau thiab Flow Lines | Upstream roj thiab roj ua haujlwm |
| Pipeline Station thiab Terminal Piping | Compressor chaw nres tsheb, twj tso kua mis, metering chaw |
| Sour Service | H₂S ib puag ncig (nrog rau qib X46MS/X46QS) |
| Offshore Pipelines | Subsea daim ntawv thov xav tau kev txhim kho toughness |
Qhov tseem ceeb ntawm PSL2 X46 DSAW Yeeb Nkab
| Qhov zoo | Kev piav qhia |
|---|---|
| Siab zog tshaj X42 | 10% siab zog tawm los (320 MPa vs . 290 MPa) tso cai rau kev khiav hauj lwm siab dua los yog txo phab ntsa thickness |
| Tus nqi - Qib Nruab Nrab Ua Tau Zoo | Kev lag luam hloov pauv thaum X42 qis dua - lub zog tab sis X52 yuav dhau - qhia |
| Guaranteed Tsawg-Tsub Toughness | Yuav tsum tau Charpy qhov kev ntsuam xyuas kom ntseeg tau tias kev ua tau zoo hauv cov huab cua txias |
| Kev Tswj Xyuas Chemistry nruj dua | 50% qis sulfur cov ntsiab lus (0.015% vs. 0.030%) txhim kho weldability thiab HIC tsis kam |
| Tswj lub zog ntau yam | Lub zog tawm los siab tshaj plaws (524 MPa) tiv thaiv ntau tshaj - cov ntaub ntawv muaj zog uas tuaj yeem ua rau muaj teeb meem vuam |
| Tag nrho Traceability | Pipe-los ntawm- yeeb nkab traceability kom tiav cov ntaub ntawv zoo |
| 100% Ultrasonic soj ntsuam | Yuav tsum tau NDT ua kom muaj kev ncaj ncees ntawm weld seam |
| Micro{0}} alloyed nrog TMCP | Fine grain qauv rau zoo heev tej yam khoom |
| Sour Service Muaj peev xwm | Muaj nrog NACE MR0175 / ISO 15156 ua raws (X46MS / X46QS qib) |
| Loj Loj Muaj peev xwm | DSAW/SSAW tsim cov kav dej ntawm 8 "mus rau 160" OD - zoo tagnrho rau cov ntawv loj - txoj kab uas hla |
| High Weld Integrity | Muab ob npaug rau- sab vuam tsim ib qho siab - zoo weld nugget |
Txheej txheej xaiv
API 5L PSL2 X46 DSAW yeeb nkab tuaj yeem muab nrog ntau txheej txheej rau kev tiv thaiv corrosion:
| Txheej hom | Zoo tshaj rau | Ntsiab nta |
|---|---|---|
| 3LPE (3-txheej polyethylene) | Cov kav dej faus | Feem ntau; zoo heev tiv thaiv corrosion, siab cuam tshuam kuj |
| FBE (Fusion Bonded Epoxy) | Roj & roj pipelines | Muaj zog adhesion, tshuaj tiv thaiv |
| Coal Tar Epoxy | Marine ib puag ncig | Heavy-lub luag haujlwm tiv thaiv |
| CWC (Concrete Weight Txheej) | Offshore / subsea pipelines | Tsis zoo buoyancy thiab mechanical tiv thaiv |
| 3LPP (3-txheej polypropylene) | Offshore pipelines | Kub kub tsis kam (txog 140 degree) |
| Varnish / Anti- xeb roj | Kev tiv thaiv ib ntus | Luv -lub sij hawm tiv thaiv corrosion thaum thauj |
| Bitumen txheej | Kev pabcuam faus | Tus nqi -kev tiv thaiv zoo |
| Dub Roj Txheej | Standard zeb tiav | Kev tiv thaiv ib ntus |
| PIB 8710 | Cov kav dej | Siab tiv taus dej corrosion |
| TPEP (3PE + Internal Epoxy) | Kev tiv thaiv dual | Sab hauv epoxy + sab nraud 3PE |
Xaus Xaus
Muaj cov kev kho mob kawg suav nrog:
Plain xaus (PE)- txheem rau ntau daim ntawv thov
Beveled xaus (BE)- rau qhov chaw vuam (30℃bevel kaum sab xis)
Xov xaus- rau kev sib txuas tshuab
Grooved xaus- rau mechanical couplings
International Approximations
| Txuj | Qib sib npaug | Sau ntawv |
|---|---|---|
| TS EN ISO 3183 | L320 | International txheem sib npaug |
| GB/T 9711 | L320 | Suav sib npaug |
| TS EN 10208-2 | L320 MB | European sib npaug |
| TIAB SA 17172 | TSI 320.7 TM | Keeb kwm German sib npaug |
Kev txiav txim siab tseem ceeb
1. PSL2 yog tus qauv rau kev siv tseem ceeb X46
PSL2yog yuav tsum tau rau qis- kev pabcuam kub (tshwj xeeb tshaj yog qis dua 0 degree), kev pabcuam qaub (H₂S ib puag ncig), cov kav dej tswj (FERC, DOT), thiab cov ntawv thov tseem ceeb
PSL1tsim nyog rau kev pabcuam dav dav, cov kab dej, tsis yog - daim ntawv thov tseem ceeb qhov twg tsis muaj qhov ntsuas kub tsawg - tsis tas yuav tsum muaj qhov toughness
2. X46 vs. Qeb / Qib Siab
X42: Nruab nrab -siab kis tau tus mob (42 ksi tawm los)
X46: Siab dua -siab kis(46 ksi yield)
X52: General kis tau tus mob (52 ksi tawm los)
X56/X60: Siab dua -siab kis, offshore
3. Kev ntsuas qhov ntsuas kub
Standard Charpy Impact Test yog nyob ntawm0 degreenrog 27J yam tsawg kawg nkaus rau PSL2
Rau kev siv arctic, cuam tshuam kev sim ntawm-20 degreelos yog-45 degreetuaj yeem teev nrog cov kev xav tau ntau zog
4. Muaj peev xwm ua haujlwm siab
PSL2 X46 nrog rau cov kev xav tau ntxiv tuaj yeem siv rau kev pabcuam qaub (H₂S ib puag ncig):
X46MS/X46QScov qib tshwj xeeb tsim los rau kev pabcuam qaub
Kev kuaj Hardness (tsawg dua lossis sib npaug rau 248 HV10)
HIC thiab SSC xeem rau NACE TM0284 thiab NACE TM0177
Cov ntsiab lus sulfur yuav raug txwv ntxiv rau Tsawg dua lossis sib npaug li 0.002%
5. Kev xa khoom xa tuaj
PSL2 X46 DSAW kav feem ntau yog muab rau hauv cov xwm txheej hauv qab no:
X46M- Thermomechanical dov (TMCP) - feem ntau siv rau kev txhim kho toughness thiab weldability
X46Q- Quenched thiab tempered - rau siab tshaj plaws lub zog uniformity
X46N- Normalized - rau kev txhim kho grain qauv
6. Kev Xaiv Txoj Kev Xaiv
SSAW (kauv)- Kev lag luam feem ntau rau cov kab loj loj (24 "mus rau 160" +); haum rau feem ntau daim ntawv thov kis
LSAW (Longitudinal)- Zoo dua qhov tseeb ntawm phab ntsa hnyav thiab siab - kev siv siab; Feem ntau 16 "mus rau 64"
UAE- Qhov siab tshaj qhov tseeb; Feem ntau 20 "mus rau 44"
7. Weldability
Cov ntsiab lus carbon tsawg (tsawg dua lossis sib npaug li 0.22%) ua kom zoo weldability
Haum rau txhua txoj kev vuam txheej txheem (SMAW, GTAW, GMAW, SAW)
Preheat tej zaum yuav xav tau rau cov ntu tuab (feem ntau 100-150 degree)
Rau cov ntawv thov kev pabcuam qaub, yuav tsum muaj kev coj ua qis hydrogen
Cov txheej txheem vuam tsim nyog nrog kev cuam tshuam - kuaj cov khoom siv hlau tseem ceeb
8. NDT Requirements
100% ultrasonic soj ntsuam (UT) ntawm weld seamyog yuav tsum tau rau PSL2
X-Ray tshuaj ntsuam xyuas (RT) muaj nyob rau ntawm kev thov, tshwj xeeb tshaj yog rau cov ntawv thov tseem ceeb
Rau kev pabcuam qaub, yuav xav tau NDT ntxiv
9. Thib peb-Kev soj ntsuam tog
Cov kev pabcuam tshuaj xyuas muaj xws li SGS, BV, Lloyds, DNV, TÜV
10. Mill Test Certificate
Feem ntau muab raws liEN 10204 Hom 3.1Bnrog tag nrho cov kev xeem
Thib peb-kev tshuaj ntsuam xyuas muaj nyob rau thaum thov
11. Kev tswj hwm kev ua raws cai
PSL2 yuav tsum muaj rau cov kav dej tswj los ntawm:
FERC(Federal Energy Regulatory Commission)
DOT(Department of Transportation)
FEMSA(Federal Environmental, Management thiab Safety Agency)
PED (Cov Lus Qhia Cov Khoom Siv Siab) rau Tebchaws Europe
Cov ntsiab lus
API 5L PSL2 Qib X46 Ob Chav -Sided Submerged Arc Welded (DSAW/SSAW/LSAW) steel yeeb nkabyog qhov nruab nrab - lub zog kab yeeb nkab uas sau qhov sib txawv ntawm X42 thiab X52 hauv API 5L qib ntaiv. Nrog yam tsawg kawg nkaus tawm lub zog ntawm46,000 psi (317-320 MPa)- kwv yees li10% siab dua X42- thiab tau lees tias Charpy cuam tshuam qhov hnyav, cov khoom siv no muaj tus nqi - kev xaiv nruab nrab zoo rau siab dua - cov ntawv thov kev sib kis uas X42 qis dua - lub zog tab sis X52 yuav dhau - qhia.
Cov yam ntxwv tseem ceeb:
Khoom txheem: API 5L PSL2 X46 - nruab nrab- qib zog rau kev pabcuam tseem ceeb
Yield zog317-320 MPa (46,000 psi) yam tsawg kawg nkaus - 10% siab dua X42
Tensile zog: 434-435 MPa (63,000 psi) yam tsawg kawg nkaus
PSL2 qib zoo: Kev ntsuas qhov yuav tsum tau ua, 50% qis sulfur (0.015% vs. 0.030%), qhov siab tshaj plaws lub zog txwv (tsawg dua lossis sib npaug li 524 MPa), tawm los- rau- qhov sib piv tensile Tsawg dua lossis sib npaug rau 0.93, thiab tag nrho traceability
DSAW/SSAW manufacturingtsim cov kav dej los ntawm8" rau 160" ODnrog phab ntsa thickness mus txog40 mm
Ob -sab vuamtsim ib lub siab -zoo weld nugget
JCOE, UOE, los yog kauv formingcov txheej txheem ua kom tus nqi- siv tau loj- txoj kab uas hla ntau lawm
100% ultrasonic kuajntawm weld seam yog yuav tsum tau
Weldability zoo heevnrog cov ntsiab lus carbon tsawg (tsawg dua lossis sib npaug li 0.22%)
Sour kev pabcuam muaj peev xwmNrog NACE MR0175 / ISO 15156 ua raws (X46MS / X46QS qib)
TMCP kev xa khoom(X46M) muab kev txhim kho toughness thiab weldability
Cov ntawv thov uas muaj xws li:
Nruab nrab - mus rau - cov roj thiab cov kav xa hluav taws xob siab
Natural gas sib sau ua ke thiab faib tes hauj lwm
Cov kav dej xa hluav taws xob thiab cov txheej txheem kev lag luam
Pipeline chaw nres tsheb thiab terminal piping
Cov ntawv thov kev pabcuam qaub (nrog rau qib X46MS/X46QS)
Offshore thiab subsea pipelines
Thaum ordering, qhia:API 5L PSL2 Qib X46M (los yog X46Q), DSAW / SSAW / LSAW (raws li muaj), Qhov Loj (OD x WT), Ntev, Qhov Kawg Finish (plain / beveled), Cov Txheej Txheem Txheej Txheem, Kev Ntsuas Kub Kub (piv txwv li, 0 degree, -20 degree, -45 degree), thiab Mill4 Test Certificate .
Rau cov ntawv thov kev pabcuam qaub, qhia meejX46MS or X46 QSnrog NACE MR0175 / ISO 15156 ua raws. Rau cov haujlwm uas xav tau tshaj plaws, 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.
