API 5L PSL2 X80 ERW Steel Yeeb Nkab
Lub ntsiab lus tseem ceeb
API 5L PSL2 Qib X80 ERW (Electric Resistance Welded) steel yeeb nkabyog qib siab zog siab tshaj plaws kev lag luam muaj rau siab - zaus welded kab yeeb nkab [citation:1, citation:2, citation:5]. Qhov kev xaiv "X80" qhia qhov tsawg kawg nkaus tawm lub zog ntawm80,000 psi (552 MPa), sawv cev rau qhov kawg ntawm API 5L kab yeeb nkab qib rau kev thov ultra- siab- cov roj xa hluav taws xob, cov kav dej sib sib zog nqus dej hiav txwv, thiab cov kev pabcuam arctic qhov siab tshaj plaws ntawm lub zog - rau - qhov hnyav piv yog qhov tseem ceeb [citation: 1, citation: 3, citation: 7].
Lub npe lov raws li hauv qab no:
API 5L: American Petroleum Institute specification rau kab yeeb nkab
PSL2: Khoom Specification Qib 2 (txhim kho qhov zoo nrog qhov yuav tsum tau kuaj) [citation: 3, citation: 8]
X80: Qib qhia qhov tsawg kawg nkaus lub zog ntawm 80 ksi (552 MPa) [citation: 3, citation: 5]
ERW: Hluav taws xob Resistance Welded - yeeb nkab tsim los ntawm steel kauj thiab welded longitudinally yam tsis muaj muab tub lim hlau [citation: 2, citation: 8]
Ntsiab Specifications
| Parameter | Specification |
|---|---|
| Txuj | API 5L (46th Edition, ua raws li ISO 3183) [citation: 3, citation: 8] |
| Khoom Specification Level | PSL2 [citation: 1, citation: 2, citation: 5] |
| Qib | X80 (L555 hauv ISO cim) [citation:3, citation:5] |
| Yam tsawg kawg nkaus Yield Strength | 552-555 MPa (80,000-80,500 psi) [Citation: 3, citation: 5] |
| Maximum Yield zog | 690-705 MPa (100,000-102,300 psi)- PSL2 qhia txog min thiab max [citation: 5, citation: 9] |
| Yam tsawg kawg Tensile Strength | 621-625 MPa (90,000-90,600 psi) [citation: 3, citation: 5] |
| Maximum Tensile Strength | 825 MPa (119,700 psi) |
| Yield-rau-Tensile Ratio (max) | 0.90-0.93[siv: 5, citation: 9] |
| Hom kev tsim khoom | ERW (Electric Resistance Welded) / HFW [citation: 1, citation: 2, citation: 8] |
| Qhov Loj Loj (ERW) | 1/2 "mus rau 24" (21.3 mm txog 609.6 mm) OD; ERW ib txwm mus txog 24 " [citation: 1, citation: 2, citation: 8] |
| Phab ntsa Thickness | Teem caij 10 txog 160, STD, XS, XXS; mus txog 1.000 "(25.4 mm) [citation: 5, citation: 8] |
| Ntev | SRL, DRL; 6 m, 12 m txheem; kev cai ntev muaj [citation:5, citation:8] |
| Xaus Xaus | Plain xaus, beveled xaus, threaded xaus [citation: 5, citation: 8] |
Chemical Composition (PSL2 Welded Yeeb Nkab)
| Element | Ntau tshaj % | Qhov tseem ceeb |
|---|---|---|
| Cov pa roj carbon (C) | 0.10-0.12% | Ultra{0}}cov pa roj carbon tsawg rau zoo weldability thiab toughness |
| Silicon (Si) | 0.45% | Deoxidizer |
| Manganese (Mn) | 1.85% | Muab lub zog |
| Phosphorus (P) | 0.025% | Kev tswj nruj rau weldability [citation: 3, citation: 5] |
| Sulfur (S) | 0.015% | 50% txo- tseem ceeb rau toughness thiab HIC kuj [citation: 3, citation: 5] |
| Vanadium (V) | Tsawg dua lossis sib npaug li 0.07% | Micro-Alloying rau cov nplej refinement |
| Niobium (Nb) | Tsawg dua lossis sib npaug li 0.06% | Micro{0}} alloying rau lub zog |
| Titanium (Ti) | Tsawg dua lossis sib npaug li 0.04% | Micro-Alloying rau cov nplej refinement |
| Nb + V + Ti (Total) | 0.15% max | Grain refinement thiab nag lossis daus muaj zog |
| Carbon sib npaug (CE IIW) | Muab xam thiab tswj | Xyuas kom zoo teb weldability |
Faj seeb: PSL2 yuav tsum muaj cov pa roj carbon sib npaug (CE) suav thiab tswj kom ntseeg tau tias qhov chaw zoo weldability. Rau cov ntawv thov kev pabcuam qaub, cov ntsiab lus sulfur yuav raug txwv ntxiv rau Tsawg dua lossis sib npaug li 0.002%.
Mechanical Properties
| Khoom | PSL2 Kev Xav Tau |
|---|---|
| Yield zog (min) | 552-555 MPa (80,000-80,500 psi) [Citation: 3, citation: 5] |
| Yield zog (max) | 690-705 MPa (100,000-102,300 psi)[siv: 5, citation: 9] |
| Tensile zog (min) | 621-625 MPa (90,000-90,600 psi) [citation: 3, citation: 5] |
| Tensile zog (max) | 825 MPa (119,700 psi) |
| Yield-rau-Tensile Ratio | 0.90-0.93 max[siv: 5, citation: 9] |
| Elongation | Ntau dua lossis sib npaug li 20% (ib API 5L formula) |
| Charpy Impact (CVN) | Yuav tsum tauntawm qhov kub thiab txias |
| Hardness (max) | 250 HV10 (kev pabcuam qaub: 248 HV10) |
Dimensional Tolerances (API 5L)
| Parameter | Qhov Loj | Ua siab ntev | Qhov chaw |
|---|---|---|---|
| Lub cev OD | 219.1-457 hli | ±0.75% | |
| Lub cev OD | 508-610 hli | ±0.75% | |
| Cov yeeb nkab kawg (219.1-273.1 hli) | - | +1.6 hli / -0.4 hli | |
| Cov yeeb nkab kawg (274-320 mm) | - | +2.4 hli / -0.8 hli | |
| Cov yeeb nkab kawg (323.9-457 mm) | - | +2.4 hli / -0.8 hli | |
| Phab ntsa Thickness (508-610mm) | - | +19.5% / -8% | |
| Phab ntsa Thickness (219.1-457 mm) | - | +15% / -12.5% | |
| Kev ncaj | Ntev ntev | Tsawg dua lossis sib npaug li 0.15% ntawm tag nrho qhov ntev |
ERW Manufacturing txheej txheem
ERW steel yeeb nkab yog ib qho ncaj seam hluav taws xob tiv thaiv welded yeeb nkab uas tsim los ntawm cov txheej txheem txuas ntxiv [citation: 2, citation: 7, citation: 8]:
Uncoiling- Steel kauj yog uncoiled thiab leveled
Ntug Kev Npaj- Cov npoo npoo yog milled rau kev vuam zoo
tsim- Steel strip yog txias - ua rau hauv cylindrical zoo
Hluav taws xob induction Vuam- Siab- zaus vuam koom nrog cov npoo yam tsis muaj hlau muab tub lim
Kev kho cua sov- Lub weld seam yog normalized rau refine grain qauv thiab tshem tawm nkig constituents
Qhov loj me- Cov yeeb nkab dhau los ntawm qhov loj me kom ua tiav qhov ntev kawg
NDT- 100% tsis yog- kuaj kev puas tsuaj (ultrasonic lossis eddy tam sim no) ntawm weld seam
Kev Ntsuas Hydrostatic-Txhua cov yeeb nkab ib leeg raug kuaj xyuas kom muaj kev ncaj ncees siab
Xaus Xaus- Xaus npaj (dawb lossis beveled)
Kev Xeem Xeem (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 [citation:3, citation:5] |
| Charpy Impact Test (CVN) | Yuav tsum tau | Yuav tsum muaj rau txhua qib PSL2 |
| Flattening Test | Yuav tsum tau rau ERW yeeb nkab | Txheeb xyuas ductility |
| Khoov Test | Yuav tsum tau | Verifies weld kev ncaj ncees |
| Hydrostatic Test | Txhua lub raj | Kev ntsuas siab ncaj ncees; 100% ntawm cov kav dej |
| NDT (Ultrasonic / Eddy Tam sim no) | 100% ntawm weld seam | Yuav tsum tau rau PSL2 |
| DWTT (Drop Weight Tear Test) | Rau cov kev siv tseem ceeb | Fracture toughness xyuas |
| Kev kuaj Hardness | Rau kev pabcuam qaub | Hardness mapping yuav tsum tau thaum teev tseg |
| Kev xeem HIC/SSC | Rau kev pabcuam qaub | Raws li NACE MR0175 / ISO 15156 |
| PMI (Positive Material Identification) | 100% rau cov qib alloy | Txheeb xyuas cov alloy muaj pes tsawg leeg |
Qib sib piv: X80 vs. Cov Qib uas nyob ib sab
| Qib | Yield zog (min) | Yield zog (max) | Tensile zog (min) | Daim ntawv thov |
|---|---|---|---|---|
| X60 | 414 MPa (60 ksi) | 565 MPa (82 ksi) | 517 MPa (75 ksi) | High -siab kis |
| X65 | 448 MPa (65 ksi) | 600 MPa (87 ksi) | 531 MPa (77 ksi) | Siab -siab, offshore |
| X70 | 483 MPa (70 ksi) | 635 MPa (92 ksi) | 565 MPa (82 ksi) | Ntev -qhov deb siab -siab |
| X80 | 552 MPa (80 ksi) | 690-705 MPa (100-102 ksi) | 621-625 MPa (90 ksi) | Ultra-siab-siab, arctic, dej tob[siv: 1, citation: 3, citation: 5] |
X80 muaj kwv yees li 14% siab dua qhov muaj zog tshaj X70 thiab 33% siab dua X60 [citation:3, citation:5].
PSL2 vs. PSL1 Sib piv rau X80
| Feature | PSL 1 X80 | PSL 2 X80 | Qhov tseem ceeb |
|---|---|---|---|
| Cov pa roj carbon (C) max | 0.26% | 0.10-0.12% | 54% txo- zoo dua weldability, qis HAZ hardness |
| Sulfur (S) max | 0.030% | 0.015% | 50% txo- tseem ceeb rau toughness thiab HIC kuj [citation: 3, citation: 5] |
| Phosphorus (P) max | 0.030% | 0.025% | Txhim kho toughness thiab weldability [citation: 3, citation: 5] |
| Yield zog | 552 MPa min xwb | 552-705 MPa ntau | Tiv thaiv tshaj - cov ntaub ntawv muaj zog [citation:3, citation:5] |
| Tensile zog | 621 MPa min xwb | 621-825 MPa ntau | Ua kom muaj cov khoom siv sib xws [citation: 3, citation: 5] |
| Yield-rau-Tensile Ratio | Tsis tau teev tseg | Tsawg dua lossis sib npaug li 0.93 | Xyuas kom txaus ductility [citation: 3, citation: 5] |
| Charpy Impact Test | Tsis xav tau | Yuav tsum tau | Guarantee qis -kub toughness |
| NDT Requirements | Txuj | nruj dua | Kev kuaj pom zoo dua |
| Traceability | Batch qib | Pipe -los ntawm- yeeb nkab puv traceability | Ua kom tiav cov ntaub ntawv zoo |
| Hom kev siv | Kev pabcuam dav dav | Kev pabcuam tseem ceeb, kev pabcuam qaub, qhov kub thiab txias, arctic, offshore[siv: 1, citation: 2, citation: 5] |
Thaum tshav kub kub kho Suffixes (PSL2)
PSL2 X80 tuaj yeem muab tau nrog cov lus qhia txog kev kho cua sov:
| Lub ntsiab lus | Qhov xwm txheej | Daim ntawv thov |
|---|---|---|
| X80N | Li qub | General kis tau tus mob, txhim kho grain qauv |
| X80Q | Quenched thiab tempered | Maximum zog uniformity |
| X80M | Thermomechanical yob (TMCP) | Txhim kho toughness thiab weldability [citation: 2, citation: 8] |
| x80 qw | Quenched thiab tempered + Sour service | H₂S ib puag ncig |
| X80 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 .
Cov ntawv thov siv
| Daim ntawv thov | Kev piav qhia |
|---|---|
| Ultra-High-Hloov Gas Transmission | Ntev -ntaus roj pipelines xav tau lub zog siab tshaj plaws-rau- qhov hnyav piv [citation:2, citation:5] |
| Deepwater Offshore Pipelines | Subsea pipelines nyob rau hauv siab sab nraud ib puag ncig [citation: 1, citation: 2] |
| Arctic thiab Cold Climate Pipelines | Tsawg- qhov kub thiab txias ib puag ncig yuav tsum muaj siab toughness [citation:2, citation:5, citation:7] |
| Sour Service | H₂S ib puag ncig (nrog X80MS/X80QS qib) [citation:1, citation:2] |
| Siab -Kev sib sau roj | Crude roj trunk kab thiab sib sau ua ke systems |
| Subsea Flowlines | Siab -siab hydrocarbon thauj hauv cov ntawv thov dej tob |
| Polar Region Infrastructure | Cov kav dej hauv cov huab cua txias heev [citation: 2, citation: 5] |
Qhov Zoo Tshaj Plaws
| Qhov zoo | Kev piav qhia |
|---|---|
| Lub zog siab tshaj | 80,000 psi tawm los - 14% siab dua X70, 33% siab dua X60 [citation:3, citation:5] |
| Ultra{0}}Cov pa roj carbon tsawg | Tsawg dua los yog sib npaug rau 0.12% cov ntsiab lus carbon ua kom zoo weldability thiab HAZ zog |
| Lub zog siab tshaj plaws - rau - Qhov hnyav piv | Tso cai rau cov phab ntsa thinnest rau lub siab - ua kom cov khoom txuag ntawm 15-25% vs. X70 |
| Guaranteed Toughness | Yuav tsum Charpy qhov kev ntsuam xyuas cuam tshuam ua kom tsis muaj -kev ua haujlwm kub |
| Stricter Chemistry | 50% qis sulfur cov ntsiab lus (0.015% vs. 0.030%) txhim kho toughness thiab HIC kuj [citation:3, citation:5] |
| Tswj lub zog | Lub zog tawm los siab tshaj plaws (705 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 |
| Enhanced NDT | Kev nruj dua uas tsis yog - qhov yuav tsum tau kuaj kev puas tsuaj |
| Micro{0}}Alloyed Structure | Fine -grained acicular ferrite qauv nrog siab tsis kam mus dynamic tearing |
| Sour Service Muaj peev xwm | Muaj nrog NACE MR0175/ISO 15156 ua raws (X80MS/X80QS qib) [citation:1, citation:2] |
Txheej txheej xaiv
| 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 |
| 3LPP (3-txheej polypropylene) | Offshore pipelines | Kub kub tsis kam (txog 140 degree) |
| Coal Tar Epoxy | Marine ib puag ncig | Heavy-lub luag haujlwm tiv thaiv |
| Dub (dawb) | Standard zeb tiav | Kev tiv thaiv ib ntus |
| Varnish/Anti- xeb roj | Kev tiv thaiv ib ntus | Luv -lub sij hawm tiv thaiv corrosion thaum thauj |
| Pob zeb hnyav txheej (CWC) | Offshore / subsea pipelines | Tsis zoo buoyancy thiab mechanical tiv thaiv |
Kev txiav txim siab tseem ceeb
1. Kev txwv qhov loj
ERW manufacturing rau X80 feem ntau muaj nyob rau hauv1/2 "mus rau 24" (21.3mm txog 609.6mm) OD[siv: 1, citation: 2, citation: 8]
Cov kab loj dua (tshaj 24 ") xav tau LSAW lossis SSAW manufacturing [citation: 1, citation: 8]
2. PSL1 vs. PSL2 Xaiv
PSL2: Yuav tsum tau txais kev pabcuam kub (tshwj xeeb tshaj yog qis dua 0 degree), kev pabcuam qaub (H₂S ib puag ncig), cov kav dej tswj hwm (FERC, DOT), cov ntawv thov sab nrauv, thiab cov txheej txheem tseem ceeb [citation: 1, citation: 2, citation: 3]
PSL1: Txwv tsis pub muaj rau X80; PSL2 yog tus qauv rau X80 hauv cov ntawv thov tseem ceeb
3. Kev ntsuas qhov ntsuas kub
Standard Charpy Impact Test yog nyob ntawm0 degreenrog yam tsawg kawg nkaus yuav tsum muaj zog
Rau arctic daim ntaub ntawv (polar cheeb tsam), cuam tshuam kuaj ntawm-45 degreetuaj yeem teev [citation:2, citation:5]
4. Muaj peev xwm ua haujlwm siab
PSL2 X80 nrog rau cov kev xav tau ntxiv tuaj yeem siv rau kev pabcuam qaub (H₂S ib puag ncig):
X80MS/X80QSqib tshwj xeeb tsim rau kev pabcuam qaub [citation: 1, citation: 2]
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. Qib sib npaug
TS EN ISO 3183: L555
GB/T 9711: L555
DNV OS{0}}F101Qib: Qib 485 / 555 (zoo sib xws)
6. Kev xa khoom xa tuaj
PSL2 X80 tuaj yeem muab tau rau hauv cov xwm txheej hauv qab no:
Raws li -rolled (R)
Normalized (N)
Quenched thiab tempered (Q)
Thermomechanical dov (TMCP) (M) [citation: 2, citation: 8]
7. Mill Test Certificate
Feem ntau muab raws liEN 10204 Hom 3.1nrog tag nrho cov kev xeem
Thib peb-kev soj ntsuam tog (SGS, BV, Lloyds, TUV, ABS) muaj nyob rau ntawm kev thov
8. Cov ntawv thov hauv Cov Haujlwm Loj
X80 yog lub ntsiab steel qib rau ultra-siab-siab ntev- deb ntawm cov roj thiab cov kav dej. Nws yog dav siv nyob rau hauv:
Polar cheeb tsam kis tau tus mob (siab toughness ntawm tsawg kub yuav tsum tau) [citation:2, citation:5]
Deepwater offshore pipeline systems [citation: 1, citation: 2]
Siab -Natural gas trunk kab kab
Cov ntsiab lus
API 5L PSL2 Qib X80 ERW steel yeeb nkabyog lub zog siab tshaj plaws kab yeeb nkab qib kev lag luam muaj, sawv cev rau lub pinnacle ntawm pipeline technology. Nrog yam tsawg kawg nkaus tawm lub zog ntawm80,000 psi (552 MPa)- kwv yees li14% siab dua X70thiab33% siab dua X60- thiab txhim kho PSL2 cov kev xav tau zoo, cov yeeb nkab no yog qhov kev xaiv rau ultra- siab- cov roj xa hluav taws xob, cov kav dej sib sib zog nqus dej hiav txwv, cov kev pabcuam arctic, thiab lwm yam kev thov uas xav tau qhov siab tshaj plaws lub zog - rau - qhov hnyav piv yog qhov tseem ceeb [citation: 1, citation: 2, citation: 5].
Cov yam ntxwv tseem ceeb:
Muaj nyob rau hauvPSL2qib zoo nrog txhim khu kev ntsuas kev xav tau
Tsim los ntawmERW txheej txheem- Qhov ntau thiab tsawg los ntawm 1/2 "mus rau 24" OD [citation: 1, citation: 2, citation: 8]
Ultra{0}} cov ntsiab lus qis carbon(tsawg dua los yog sib npaug li 0.12%) ua kom zoo weldability thiab qis -kub toughness
Yuav tsum tau Charpy impact testua kom qis -kub kev ua haujlwm rau cov ntawv thov arctic
50% qis sulfur cov ntsiab lus(0.015% vs. 0.030%) txhim kho toughness thiab HIC kuj [citation:3, citation:5]
Maximum yield zog(705 MPa) tiv thaiv ntau tshaj - cov ntaub ntawv muaj zog
Micro{0}} alloyednrog Nb / V / Ti rau cov khoom txhim kho (tag nrho Tsawg dua lossis sib npaug li 0.15%)
Yield-rau-tensile ratio Tsawg dua lossis sib npaug rau 0.93xyuas kom txaus ductility [citation: 3, citation: 5]
Tag nrho traceabilitylos ntawm steelmaking mus rau cov yeeb nkab tiav
NACE MR0175 / ISO 15156 ua rawsrau daim ntawv thov kev pabcuam qaub (X80MS/X80QS qib) [citation:1, citation:2]
Cov ntawv thov uas muaj xws li:
Ultra-siab- cov kav xa hluav taws xob siab
Deepwater offshore thiab subsea pipelines
Arctic thiab txias huab cua pipelines [citation: 2, citation: 5]
Cov ntawv thov kev pabcuam qaub (nrog X80MS/X80QS qib) [citation:1, citation:2]
Cov kav dej tswj tau raws li FERC, DOT, lossis lwm tus tub ceev xwm
Polar cheeb tsam infrastructure yuav tsum muaj siab toughness ntawm tsawg kub [citation: 2, citation: 5]
Thaum ordering, qhia:API 5L PSL2 Qib X80 ERW steel yeeb nkab, Qhov Loj (OD x WT), Ntev, Qhov Kawg Finish (plain / beveled), Kev kho cua sov (M / Q yog tias xav tau), Txheej Txheej (3LPE / FBE / liab qab), thiab lwm yam kev xav tau ntxiv (kev ntsuas kub, kev pabcuam qaub). Mill Test Certificate rau EN 10204 Hom 3.1 yog tus qauv. Rau cov ntawv thov kev pabcuam qaub, qhia meejX80MS or X80 QSnrog NACE MR0175 ua raws [citation:1, citation:2].
