API 5L PSL2 X42 ERW Steel Yeeb Nkab
Lub ntsiab lus tseem ceeb
API 5L PSL2 Qib X42 ERW (Electric Resistance Welded) steel yeeb nkabyog ib qho nruab nrab - zog kab yeeb nkab uas sib txuas cov kev xav tau zoo ntawm PSL2 nrog rau qib X42 lub zog. Qhov kev xaiv "X42" qhia txog qhov tsawg kawg nkaus tawm lub zog ntawm42,000 psi (290 MPa), thaum PSL2 tswj hwm kev tswj hwm tshuaj nruj dua, yuav tsum muaj kev sim cuam tshuam, 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)
X42Qib qhia qhov tsawg kawg nkaus lub zog ntawm 42 ksi (290 MPa)
ERW: Hluav taws xob Resistance Welded - yeeb nkab tsim los ntawm steel kauj thiab welded longitudinally yam tsis muaj muab tub lim
Ntsiab Specifications
| Parameter | Specification |
|---|---|
| Txuj | API 5L (46th Edition, ua raws li ISO 3183) |
| Khoom Specification Level | PSL2 |
| Qib | X42 (L290 hauv ISO cim) |
| Yam tsawg kawg nkaus Yield Strength | 290 MPa (42,100 psi) |
| Maximum Yield zog | 496 MPa (72,000 psi)- PSL2 qhia ob qho tib si min thiab max |
| Yam tsawg kawg Tensile Strength | 414 MPa (60,200 psi) |
| Maximum Tensile Strength | 758 MPa (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; mus txog 22.2 mm |
| Ntev | 5m rau 14m; SRL, DRL; 5.8 m, 6 m, 11.8 m, 12 m txheem |
| Xaus Xaus | Plain xaus, beveled xaus |
Chemical Composition (PSL2 Welded Yeeb Nkab)
| Element | Ntau tshaj % | PSL1 Sib piv |
|---|---|---|
| Cov pa roj carbon (C) | 0.22% | 0.26% (tighter tswj) |
| Manganese (Mn) | 1.40% | 1.30% (siab dua rau lub zog) |
| Phosphorus (P) | 0.025% | 0.030% (tsis suav) |
| Sulfur (S) | 0.015% | 0.030% (50% txo) |
| Silicon (Si) | 0.40-0.45% | Tsis tau teev rau PSL1 |
| Vanadium (V) | Tsawg dua lossis sib npaug li 0.06% | Xaiv tau |
| Niobium (Nb) | Tsawg dua lossis sib npaug li 0.05% | Xaiv tau |
| Titanium (Ti) | Tsawg dua lossis sib npaug li 0.04% | Xaiv tau |
Lus Cim: PSL2 kuj xav tau cov pa roj carbon sib npaug (CE) suav thiab tswj.
Mechanical Properties
| Khoom | PSL2 Kev Xav Tau | PSL1 Sib piv |
|---|---|---|
| Yield zog (min) | 290 MPa (42,100 psi) | Yam tsawg kawg nkaus |
| Yield zog (max) | 496 MPa (72,000 psi) | Tsis tau teev tseg |
| Tensile zog (min) | 414 MPa (60,200 psi) | Yam tsawg kawg nkaus |
| Tensile zog (max) | 758 MPa (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 |
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% |
ERW Manufacturing txheej txheem
ERW steel yeeb nkab yog ncaj seam hluav taws xob tiv thaiv 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 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
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 | 27 J yam tsawg kawg nkaus ntawm qhov ntsuas kub (feem ntau 0℃lossis -20 degree) |
| 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 |
| NDT (Ultrasonic / Eddy Tam sim no) | 100% ntawm weld seam | Yuav tsum tau rau PSL2 |
| Kev kuaj Hardness | Rau kev pabcuam qaub | Hardness mapping yuav tsum tau thaum teev tseg |
Qib sib piv: X42 vs. Cov Qib uas nyob ib sab
| Qib | Yield zog (min) | Tensile zog (min) | Tus txheeb ze zog vs. X42 | Daim ntawv thov |
|---|---|---|---|---|
| B | 241 MPa (35 ksi) | 414 MPa (60 ksi) | -17% | Tsawg-kev sib sau ua ke, kev siv hluav taws xob |
| X42 | 290 MPa (42 ksi) | 414 MPa (60 ksi) | Lub hauv paus | Nruab nrab -siab kis |
| X46 | 320 MPa (46 ksi) | 435 MPa (63 ksi) | +10% | Siab dua -siab kis |
| X52 | 359 MPa (52 ksi) | 455 MPa (66 ksi) | +24% | General kis tau tus mob |
X42 muaj kwv yees li 17% siab dua qhov muaj zog dua li Qib B.
PSL1 vs. PSL2 Sib piv rau X42
| Feature | PSL1 X42 | PSL 2 X42 | Qhov tseem ceeb |
|---|---|---|---|
| Cov pa roj carbon (C) max | 0.26-0.28% | 0.22% | 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 |
| Manganese (Mn) max | 1.30% | 1.40% | Me ntsis siab dua rau lub zog |
| Yield zog | 290 MPa min xwb | 290-496 MPa ntau | Tiv thaiv tshaj - cov ntaub ntawv muaj zog |
| Tensile zog | 414 MPa min xwb | 414-758 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(27J ntawm 0℃lossis -20 degree) | 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 |
| Hom kev siv | Kev pabcuam dav dav | Kev pabcuam tseem ceeb, qhov kub thiab txias, tswj cov kav dej |
Cov ntawv thov siv
| Daim ntawv thov | Kev piav qhia |
|---|---|
| Roj thiab roj kis tau tus mob | Nruab nrab - cov kav dej siab rau cov roj crude thiab cov nkev ntuj |
| Natural Gas Sib Sau Kab | Txuas qhov dej mus rau cov chaw ua haujlwm; Class II/III onshore gas kis |
| Kev xa dej Mains | Loj - txoj kab uas hla hauv nroog thiab cov kav dej muaj |
| Sour Service | H₂S ib puag ncig (nrog cov kev xav tau ntxiv) |
| Tsawg- Kev Pabcuam Kub | Daim ntawv thov yuav tsum tau guaranteed tej yam toughness ntawm -20 degree |
| Muaj Txheej Txheem Piping | Refineries, tshuaj nroj tsuag, fais fab engineering |
| Pipeline Station thiab Terminal Piping | Compressor chaw nres tsheb, twj tso kua mis, metering chaw |
| Offshore Pipelines | Subsea daim ntawv thov nrog txhim kho toughness xav tau |
Qhov Zoo Tshaj Plaws
| Qhov zoo | Kev piav qhia |
|---|---|
| Guaranteed Toughness | Mandatory Charpy impact testing (≥27J) ensures low-temperature performance; X42 PSL2 maintains impact energy >27J txawm nyob rau ntawm -20 degree |
| 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 (496 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 |
| Tus nqi -Cov | ERW txheej txheem muab kev lag luam tsim khoom rau qhov ntau thiab tsawg txog 24 " |
| Micro{0}}Alloyed | Yuav tsum tau ntxiv ntawm Nb / V microalloying ntsiab rau kev txhim kho cov khoom |
Kev txiav txim siab tseem ceeb
1. Kev txwv qhov loj
ERW manufacturing rau X42 feem ntau muaj txog li24-26 nti (610 mm) OD
Cov kab uas loj dua yuav tsum tau LSAW lossis SSAW manufacturing
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 cov ntawv siv txias dua, cuam tshuam kev sim ntawm-20 degreenrog 27J yam tsawg kawg nkaus tuaj yeem teev tseg
4. Qib sib npaug
TS EN ISO 3183: L290
GB/T 9711: L290
TS EN 10208-2L290 Ib
ASTM A106 1: Qib B (seamless, zoo sib xws lub zog tab sis txawv qauv)
ASTM A53: Qib B (lub zog zoo sib xws tab sis txawv tus qauv)
5. Txheej txheej xaiv
FBE (Fusion Bonded Epoxy): Kev tiv thaiv corrosion rau cov kav dej faus
3LPE (3-txheej polyethylene): Feem ntau rau cov kav dej faus
Dub (dawb): Standard zeb tiav
Varnish/Anti- xeb roj: Kev tiv thaiv ib ntus thaum thauj
6. Mill Test Certificate
Feem ntau muab raws liEN 10204 Hom 3.1nrog tag nrho cov kev xeem
Thib peb-kev tshuaj ntsuam xyuas (SGS, BV, Lloyds) muaj nyob rau ntawm kev thov
7. X42 vs. Qib B
X42 muab kwv yees li17% siab dua yield zogdua qib B, ua rau nws tus nqi - txhim kho zoo rau nruab nrab - cov ntawv thov kev sib kis. Hauv cov roj qaub lossis qis- qhov kub thiab txias ib puag ncig, X42 PSL2 yog kev lag luam ntau dua ntawm lub neej vim nws qhov kev txhim kho toughness thiab corrosion kuj.
Cov ntsiab lus
API 5L PSL2 Qib X42 ERW steel yeeb nkabyog nruab nrab -strength kab yeeb nkab uas sib txuas X42 lub zog qib (290 MPa yam tsawg kawg nkaus tawm los) nrog rau kev txhim kho PSL2 cov kev cai zoo. Nrognruj dua tshuaj tswj(S Tsawg dua lossis sib npaug rau 0.015%, P Tsawg dua lossis sib npaug li 0.025%),yuav tsum tau Charpy impact test(Ntau dua lossis sib npaug rau 27J ntawm 0℃lossis -20 degree),lub zog siab tshaj plaws(tsawg dua los yog sib npaug rau 496 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 X42 yog qhov kev xaiv zoo tshaj plaws rau nruab nrab - cov ntawv thov kev sib kis uas yuav tsum tau lees paub qis - kub toughness lossis qaub kev pab cuam muaj peev xwm .
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 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(496 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
Cov ntawv thov uas muaj xws li:
Nruab nrab - cov roj thiab cov kav xa hluav taws xob siab
Natural gas sib sau ua ke thiab faib tes hauj lwm
Tsawg- qhov kub thiab txias kev pab cuam yuav tsum tau guaranteed tej yam toughness
Cov kav dej tswj tau raws li FERC, DOT, lossis lwm tus tub ceev xwm
Daim ntawv thov kev pabcuam qaub (nrog cov kev xav tau ntxiv)
Thaum ordering, qhia:API 5L PSL2 Qib X42 ERW steel yeeb nkab, Qhov Loj (OD x WT), Ntev, Qhov Kawg Finish (plain / beveled), Kev kho cua sov (yog tias xav tau), Cov Txheej Txheem Txheej Txheem (FBE / 3LPE / 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.
