API 5L PSL2 X52 ERW Steel Yeeb Nkab
Lub ntsiab lus tseem ceeb
API 5L PSL2 Qib X52 ERW (Electric Resistance Welded) steel yeeb nkabyog ib qho ntawm feem ntau siv nruab nrab -strength kab yeeb nkab specifications hauv kev lag luam roj thiab roj. Qhov kev xaiv "X52" qhia qhov tsawg kawg nkaus tawm lub zog ntawm52,000 psi (359 MPa), sawv cev rau qib kev hloov pauv nruab nrab ntawm qis - kev sib sau ua ke siab thiab siab - cov kav xa hluav taws xob siab . PSL2 ntxiv qhov yuav tsum tau ua kom zoo dua qub nrog rau kev tswj cov tshuaj nruj dua, yuav tsum tau kuaj xyuas, kev txwv lub zog siab tshaj plaws, thiab tag nrho traceability.
Lub npe lov raws li hauv qab no:
API 5L: American Petroleum Institute specification rau kab yeeb nkab
PSL2: Khoom Specification Qib 2 (ua kom zoo dua nrog kev sim yuav tsum tau)
X52Qib qhia qhov tsawg kawg nkaus tawm lub zog ntawm 52 ksi (359 MPa)
ERW: Hluav taws xob Resistance Welded - yeeb nkab tsim los ntawm steel kauj thiab welded longitudinally yam tsis muaj muab tub lim
Cov ntsiab lus tseem ceeb
| Parameter | Specification |
|---|---|
| Txuj | API 5L (46th Edition, ua raws li ISO 3183) |
| Khoom Specification Level | PSL2 |
| Qib | X52 (L360 hauv ISO cim) |
| Yam tsawg kawg Yield Strength | 359-360 MPa (52,000-52,200 psi) |
| Maximum Yield Strength | 530-531 MPa (76,900-77,000 psi)- PSL2 qhia txog min thiab max |
| Yam tsawg kawg Tensile Strength | 455-460 MPa (66,000-66,700 psi) |
| Maximum Tensile Strength | 600-760 MPa (87,000-110,000 psi) |
| Yield-rau-Tensile Ratio (max) | 0.93 |
| Hom kev tsim khoom | ERW (Electric Resistance Welded) / HFW |
| Qhov Loj Loj (ERW) | 1/2 "mus rau 26" (21.3 mm txog 660 mm) OD; ib txwm ERW mus txog 24 " |
| Phab ntsa Thickness | Teem caij 10 txog 160, STD, XS, XXS |
| Ntev | 5m rau 14m; SRL, DRL; 5.8 m, 6 m, 11.8 m, 12 m txheem |
| Xaus Xaus | Plain xaus, beveled xaus, threaded xaus |
Chemical Composition (PSL2 Welded Yeeb Nkab)
| Lub ntsiab | Qhov siab tshaj % | PSL1 Sib piv |
|---|---|---|
| Cov pa roj carbon (C) | 0.22-0.24% | 0.28% (kev tswj nruj dua) |
| Manganese (Mn) | 1.40% | 1.40% (zoo ib yam) |
| Silicon (Si) | 0.40-0.45% | Tsis tau teev rau PSL1 |
| Phosphorus (P) | 0.025% | 0.030% (tsis suav) |
| Sulfur (S) | 0.015% | 0.030% (50% txo) |
| Vanadium (V) | 0.10% max | Kev xaiv micro-alloying |
| Niobium (Nb) | 0.05% max | Kev xaiv micro-alloying |
| Titanium (Ti) | 0.04% max | Kev xaiv micro-alloying |
| Carbon sib npaug (CE IIW) | 0.43% max | Muab xam thiab tswj rau weldability |
Faj seeb: PSL2 yuav tsum muaj kev sib npaug ntawm cov pa roj carbon sib npaug (CE) thiab kev tswj xyuas kom ntseeg tau tias qhov chaw zoo weldability.
Mechanical Properties
| Khoom | PSL2 Kev Xav Tau | PSL1 Sib piv |
|---|---|---|
| Yield zog (min) | 359-360 MPa (52,200 psi) | Yam tsawg kawg nkaus |
| Yield zog (max) | 530-531 MPa (77,000 psi) | Tsis tau teev tseg |
| Tensile zog (min) | 455-460 MPa (66,700 psi) | Yam tsawg kawg nkaus |
| Tensile zog (max) | 600-760 MPa (87,000-110,000 psi) | Tsis tau teev tseg |
| Yield-rau-Tensile Ratio | 0.93 max | Tsis tau teev tseg |
| Elongation | Raws li API 5L formula | Tib yam mis nyuj |
| Charpy Impact (CVN) | Yuav tsum tauntawm qhov kub thiab txias | Tsis xav tau |
| Hardness (max) | 250 HV10 (kev pabcuam qaub: 248 HV10) | Tsis tau teev tseg |
Dimensional Tolerances (API 5L)
| Parameter | Qhov Loj | Ua siab ntev |
|---|---|---|
| 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% |
ERW Manufacturing txheej txheem
ERW steel yeeb nkab yog ncaj seam hluav taws xob tsis kam welded yeeb nkab uas tsim los ntawm cov txheej txheem txuas ntxiv:
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 cov duab cylindrical
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
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 |
| Charpy Impact Test (CVN) | Yuav tsum tau | Yuav tsum muaj rau txhua qib PSL2 |
| Flattening Test | Yuav tsum tau rau ERW yeeb nkab | Tshawb xyuas ductility |
| Khoov Test | Yuav tsum tau | Verifies weld kev ncaj ncees |
| Hydrostatic Test | Txhua lub raj | Kev ntsuas siab ncaj ncees |
| NDT (Ultrasonic / Eddy Tam sim no) | 100% ntawm weld seam | Yuav tsum tau rau PSL2 |
| Kev Xeem Hardness | Rau kev pabcuam qaub | Hardness mapping yuav tsum tau thaum teev tseg |
Qib sib piv: X52 vs. Cov Qib uas nyob ib sab
| Qib | Yield zog (min) | Yield zog (max) | Tensile zog (min) | Daim ntawv thov |
|---|---|---|---|---|
| B | 241 MPa (35 ksi) | 448 MPa (65 ksi) | 414 MPa (60 ksi) | Tsawg-kev sib sau ua ke, kev siv hluav taws xob |
| X42 | 290 MPa (42 ksi) | 496 MPa (72 ksi) | 414 MPa (60 ksi) | Sib sau ua ke, faib |
| X46 | 317 MPa (46 ksi) | 524 MPa (76 ksi) | 435 MPa (63 ksi) | Nruab nrab-kev sib sau siab |
| X52 | 359 MPa (52 ksi) | 531 MPa (77 ksi) | 455-460 MPa (66 ksi) | Kev sib kis, sib sau ua ke, txheej txheem |
| X56 | 386 MPa (56 ksi) | 545 MPa (79 ksi) | 490 MPa (71 ksi) | Cov kav xa dej |
| 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 -ntaus, siab-siab |
*X52 yog qib kev hloov pauv ntawm qhov qis- lub zog sib sau ua ke thiab siab - cov kav xa hluav taws xob siab, muab pov thawj qhov sib npaug ntawm lub zog, weldability, thiab tus nqi .*
PSL1 vs. PSL2 Sib piv rau X52
| Feature | PSL 1 X52 | PSL 2 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 | 359-360 MPa min xwb | 360-531 MPa ntau | Tiv thaiv tshaj - cov ntaub ntawv muaj zog |
| Tensile zog | 455-460 MPa min xwb | 455-600 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 Testing | 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 | nruj dua | 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 los yog sib npaug rau 250 HV10 (qab zib: 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, qhov kub thiab txias, tswj cov kav dej |
Cov ntawv thov siv
| Daim ntawv thov | Kev piav qhia |
|---|---|
| Onshore Roj thiab Gas Transmission | Nruab nrab- cov kav dej siab rau cov roj av, roj av, thiab cov khoom ua kom zoo |
| Natural Gas sib sau ua ke thiab faib | Txuas qhov dej mus rau cov chaw ua haujlwm; regional gas networks |
| Ua Dej thiab Multiphase Flow Lines | Kev thauj cov roj / dej / roj sib tov hauv cov dej ntws |
| Pipeline Station thiab Terminal Piping | Compressor chaw nres tsheb, twj tso kua mis, metering chaw |
| Sour Service | H₂S ib puag ncig (nrog rau NACE ntxiv) |
| Tsawg- Kev Pabcuam Kub | Daim ntawv thov yuav tsum tau lav qhov cuam tshuam toughness ntawm 0℃lossis qis dua |
| Muaj Txheej Txheem Piping | Refineries, tshuaj nroj tsuag, tsim hluav taws xob |
| Subsea Pipelines | Offshore thiab marine daim ntawv thov (nrog txhim kho toughness) |
Qhov Zoo Tshaj Plaws
| Qhov zoo | Kev piav qhia |
|---|---|
| Guaranteed Toughness | Yuav tsum tau Charpy impact testing kom qis -kub kev ua haujlwm; 27J yam tsawg kawg nkaus ntawm qhov ntsuas kub |
| Stricter Chemistry | 50% qis sulfur cov ntsiab lus (0.015% vs . 0.030%) txhim kho weldability thiab HIC tsis kam |
| Tswj lub zog | Lub zog tawm los siab tshaj plaws (531 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 |
| Qhov Zoo Tshaj Plaws | X52 muaj qhov sib npaug zoo tshaj plaws ntawm lub zog, weldability, thiab tus nqi ntawm API 5L qib |
| Daim ntawv pov thawj dual | Feem ntau dual - ntawv pov thawj nrog ASTM A106 Qib B rau kev siv cov kav dej dav dav |
| Tus nqi -Cov | ERW txheej txheem muab kev lag luam tsim khoom rau qhov ntau thiab tsawg txog 24 " |
Txheej txheej xaiv
| Txheej hom | Zoo tshaj rau | Cov yam ntxwv tseem ceeb |
|---|---|---|
| 3LPE (3-txheej polyethylene) | faus cov kav dej | Feem ntau; kev tiv thaiv corrosion zoo heev, muaj kev cuam tshuam zoo heev |
| 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 X52 feem ntau muaj nyob rau hauv1/2 "mus rau 24-26" (21.3mm txog 660mm) OD
Cov kab loj dua (tshaj 24 ") xav tau LSAW lossis SSAW kev tsim khoom
2. PSL1 vs. PSL2 Xaiv
PSL2: Yuav tsum muaj 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
PSL1: Haum rau cov kev pabcuam dav dav, cov kab dej, tsis yog - daim ntawv thov tseem ceeb uas tsis muaj qhov ntsuas kub tsawg - tsis tas yuav tsum muaj qhov toughness
3. Kev ntsuas qhov ntsuas kub
Standard Charpy Impact Test yog nyob ntawm0 degreenrog 27J yam tsawg kawg nkaus
Rau kev siv txias dua (arctic, dej tob), kev ntsuas cuam tshuam ntawm-20 degreelos yog-45 degreetuaj yeem teev
4. Muaj peev xwm ua haujlwm siab
PSL2 X52 nrog rau cov kev xav tau ntxiv tuaj yeem siv rau kev pabcuam qaub (H₂S ib puag ncig):
Kev kuaj Hardness (tsawg dua lossis sib npaug rau 248 HV10)
HIC thiab SSC xeem rau NACE MR0175 / ISO 15156
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: L360
GB/T 9711: L360
ASTM A106 1Qib B (seamless, zoo sib xws)
ASTM A53: Qib B (zoo sib xws)
TS EN 10208-2L360NB/MB
6. Kev xa khoom (Kev kho cua sov Suffixes)
PSL2 X52 tuaj yeem muab tau nrog cov lus qhia txog kev kho cua sov:
X52N: normalized
X52Q: Quenched thiab tempered
X52MTom ntej: Thermomechanical Rolled (TMCP)
7. Mill Test Certificate
Feem ntau muab raws liEN 10204 Hom 3.1nrog tag nrho cov kev xeem
Thib peb-kev tshuaj ntsuam xyuas tog (SGS, BV, Lloyds, TUV, ABS) muaj raws li qhov kev thov
8. Kev lag luam ceeb toom
Ib txoj kev tshawb fawb sib piv xyoo 2024 pom tias Charpy cuam tshuam qhov tseem ceeb ntawm cov yeeb nkab seamless feem ntau siab dua ERW yeeb nkab vim yog metallurgical yam xws li grain loj, tsis yog - metallic inclusions, delaminations, thiab microstructures. Txawm li cas los xij, PSL2 ERW nrog kev tswj xyuas kom zoo tseem tsim nyog rau cov ntawv thov tseem ceeb.
Cov ntsiab lus
API 5L PSL2 Qib X52 ERW steel yeeb nkabyog tus qauv kev lag luam rau nruab nrab -lub zog welded kab yeeb nkab, sib txuas X52 lub zog qib (359 MPa yam tsawg kawg nkaus tawm los) nrog rau kev txhim kho PSL2 cov kev cai zoo. Nrognruj dua tshuaj tswj(C Tsawg dua lossis sib npaug rau 0.24%, S Tsawg dua lossis sib npaug rau 0.015%, P Tsawg dua lossis sib npaug li 0.025%),yuav tsum tau Charpy impact test, lub zog siab tshaj plaws(tsawg dua lossis sib npaug rau 531 MPa tawm los),yield-rau- tensile ratio tswj(Less tshaj los yog sib npaug rau 0.93), thiabtag nrho cov yeeb nkab-los ntawm- yeeb nkab traceability, PSL2 X52 yog qhov kev xaiv zoo tshaj plaws rau cov kav xa hluav taws xob, kev sib sau ua ke, thiab cov ntawv thov tseem ceeb uas yuav tsum tau lees paub qis- qhov kub thiab txias los yog kev pabcuam qaub.
Cov yam ntxwv tseem ceeb:
Muaj nyob rau hauvPSL2qib zoo nrog txhim kho cov kev cai xeem
Tsim los ntawmERW txheej txheem- Qhov ntau thiab tsawg ntawm 1/2 "rau 24" OD
Yuav tsum tau Charpy impact test(27J yam tsawg kawg nkaus) ua kom qis -kev ua haujlwm kub
50% qis sulfur cov ntsiab lus(0.015% vs. 0.030%) txhim kho toughness thiab HIC kuj
Maximum yield zog(531 MPa) tiv thaiv ntau tshaj - cov ntaub ntawv muaj zog
Micro{0}} alloyednrog Nb / V rau kev txhim kho cov khoom
Tag nrho traceabilitylos ntawm steelmaking mus rau cov yeeb nkab tiav
Yield-rau-tensile ratio Tsawg dua lossis sib npaug rau 0.93xyuas kom txaus ductility
Cov ntawv thov uas muaj xws li:
Roj thiab roj xa mus kav
Natural gas sib sau ua ke thiab faib tes hauj lwm
Pipeline chaw nres tsheb thiab davhlau ya nyob twg kav
Tsawg- qhov kub thiab txias kev pab cuam yuav tsum tau guaranteed tej yam toughness
Kev tswj cov kav dej hauv qab FERC, DOT, lossis lwm tus tub ceev xwm
Cov ntawv thov kev pabcuam qaub (nrog NACE cov kev xav tau ntxiv)
Offshore thiab subsea pipelines
Thaum ordering, qhia:API 5L PSL2 Qib X52 ERW steel yeeb nkab, Qhov Loj (OD x WT), Ntev, Qhov Kawg Finish (plain / beveled), Kev kho cua sov (N / Q / M 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.
