API 5L PSL1 X42 ERW Steel Yeeb Nkab
Lub ntsiab lus tseem ceeb
API 5L PSL1 Qib X42 ERW (Electric Resistance Welded) steel yeeb nkabyog ib qho nruab nrab -lub zog carbon steel kab yeeb nkab dav siv hauv cov roj thiab cov tshuab xa hluav taws xob. Qhov kev xaiv "X42" qhia qhov tsawg kawg nkaus tawm lub zog ntawm42,000 psi (290 MPa), sawv cev rau qhov muaj zog loj dua qib B.
Lub npe lov raws li hauv qab no:
API 5L: American Petroleum Institute specification rau kab yeeb nkab
PSL1: Khoom Specification Qib 1 (tus qauv zoo nrog cov kev cai yooj yim)
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
Cov ntsiab lus tseem ceeb
| Parameter | Specification |
|---|---|
| Txuj | API 5L (46th Edition, raws li ISO 3183) |
| Khoom Specification Level | PSL1 |
| Qib | X42 (L290 hauv ISO cim) |
| Yam tsawg kawg nkaus Yield Strength | 290 MPa (42,000 psi) |
| Yam tsawg kawg Tensile Strength | 415 MPa (60,000 psi) |
| Hom kev tsim khoom | ERW (Electric Resistance Welded) |
| Qhov Loj (OD) | 21.3mm txog 660mm (1/2 "mus rau 26") |
| Phab ntsa Thickness | 1.0mm txog 22.2mm |
| Ntev | 3 m txog 22 m (tus qauv: 5.8 / 6 / 11.8 / 12 m, SRL, DRL) |
| Xaus Xaus | Plain xaus, beveled xaus, threaded xaus |
Chemical Composition (PSL1 Welded Yeeb Nkab)
| Element | Ntau tshaj % | Sau ntawv |
|---|---|---|
| Cov pa roj carbon (C) | 0.26% | qis dua qib seamless (0.28%) rau weldability zoo dua |
| Manganese (Mn) | 1.30% | Muab lub zog |
| Phosphorus (P) | 0.030% | Tswj rau weldability |
| Sulfur (S) | 0.030% | Tswj kom toughness |
| Silicon (Si) | 0.40% | Deoxidizer |
Lus Cim: Rau txhua qhov kev txo qis ntawm 0.01% hauv qab cov ntsiab lus siab tshaj plaws carbon, qhov nce ntawm 0.05% siab tshaj qhov teev siab tshaj manganese tau tso cai, mus txog qhov siab tshaj ntawm 1.65%.
Mechanical Properties (PSL1)
| Khoom | Kev xav tau |
|---|---|
| Yield zog (min) | 290 MPa (42,000 psi) |
| Tensile zog (min) | 415 MPa (60,000 psi) |
| Elongation | 28% yam tsawg kawg nkaus |
Dimensional Tolerances
| 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% |
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% | General pipeline kev pab |
| X42 | 290 MPa (42 ksi) | 415 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.
Kev Xeem Xeem (PSL1)
| Hom kev xeem | Kev xav tau | Sau ntawv |
|---|---|---|
| Tshuaj ntsuam xyuas | Rau qhov kub ntau | Txheeb xyuas qhov txwv tsis pub muaj |
| Tensile Test | Rau ntau | Txheeb xyuas qhov tawm los thiab lub zog tensile |
| 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 yeeb nkab tau kuaj ib tus zuj zus | Kev ntsuas siab ncaj ncees |
| NDT (Ultrasonic / Eddy Tam sim no) | Weld seam soj ntsuam | Txuj kev xyaum |
| Impact Testing (Charpy V-notch) | Tsis xav tau rau PSL1 | Tsuas yog PSL2 yuav tsum tau kuaj qhov cuam tshuam |
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 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- Nruab nrab zaus kev kho cua sov normalizes thaj tsam weld
Qhov loj me- Cov yeeb nkab dhau los ntawm qhov loj me kom ua tiav qhov ntev kawg
NDT- Ultrasonic nrhiav pom 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, beveled, los yog threaded)
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 |
| 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 |
| Kev siv tus qauv | Piling, choj kev txhawb nqa, kev tsim kho |
PSL1 vs. PSL2 Sib piv rau X42
| Feature | PSL1 | PSL2 | Qhov tseem ceeb |
|---|---|---|---|
| Cov pa roj carbon (C) max | 0.26% | 0.24% | Zoo dua weldability |
| Sulfur (S) max | 0.030% | 0.015% | 50% txo- txhim kho toughness |
| Yield zog | Tsawg kawg nkaus (290 MPa) | Min thiab Max (290-496 MPa) | Tiv thaiv tshaj - cov ntaub ntawv muaj zog |
| Yield-rau-Tensile Ratio | Tsis tau teev tseg | Tsawg dua los yog sib npaug rau 0.93 max | Xyuas kom txaus ductility |
| Kev ntsuam xyuas cuam tshuam | Tsis xav tau | Yuav tsum tau | Guarantee qis -kub toughness |
| NDT Requirements | Txuj | nruj dua | Kev kuaj pom zoo dua |
| Kev siv yam | Kev pabcuam dav dav | Kev pabcuam tseem ceeb, qis-kev siv kub |
Qhov Zoo Tshaj Plaws
| Qhov zoo | Kev piav qhia |
|---|---|
| Siab zog dua qib B | 17% siab zog tawm los tso cai rau kev khiav hauj lwm siab dua los yog txo phab ntsa thickness |
| Tus nqi -Cov | ERW txheej txheem muab kev lag luam tsim khoom rau qhov ntau thiab tsawg txog 24 " |
| Weldability zoo heev | Tswj chemistry ua kom zoo teb weldability |
| Dav Muaj | Feem ntau stocked los ntawm manufacturers thoob ntiaj teb |
| Daim ntawv pov thawj dual | Feem ntau dual - tau lees paub nrog lwm cov qauv rau kev siv cov kav dej dav dav |
Kev txiav txim siab tseem ceeb
1. Kev txwv qhov loj
ERW manufacturing feem ntau txwv rau24-26 nti (610 mm) OD
Cov kab uas loj dua yuav tsum tau LSAW lossis SSAW manufacturing
2. PSL1 vs. PSL2 Xaiv
PSL1: Haum rau kev pabcuam dav dav, cov kab dej, tsis yog - cov ntawv thov tseem ceeb
PSL2: Yuav tsum tau muaj rau cov kev pabcuam kub tsawg, kev pabcuam qaub (H₂S ib puag ncig), cov kav dej tswj (FERC, DOT), thiab cov ntawv thov tseem ceeb
3. Qib sib npaug
TS EN ISO 3183: L290
GB/T 9711: L290
ASTM A53: Qib B (zoo ib yam li lub zog)
4. Txheej txheej xaiv
Dub (dawb): Txheem zeb tiav
FBE (Fusion Bonded Epoxy): Corrosion tiv thaiv rau faus pipelines
3LPE (3-txheej polyethylene): Rau cov ntawv thov faus
Varnish/Anti- xeb roj: Kev tiv thaiv ib ntus thaum thauj
5. Mill Test Certificate
Feem ntau muab raws liEN 10204 Hom 3.1Bnrog tag nrho cov kev xeem
Thib peb-kev tshuaj ntsuam xyuas (SGS, BV, Lloyds) muaj nyob rau ntawm kev thov
Cov ntsiab lus
API 5L PSL1 Qib X42 ERW steel yeeb nkabyog ib qho nruab nrab - zog kab yeeb nkab dav siv nyob rau hauv cov roj thiab roj kis tau tus mob. Nrog yam tsawg kawg nkaus tawm lub zog ntawm42,000 psi (290 MPa)- kwv yees li17% siab dua Qib B- nws muaj qhov sib npaug zoo heev ntawm lub zog thiab tus nqi - kev ua tau zoo rau nruab nrab - kev siv cov raj xa dej siab .
Cov yam ntxwv tseem ceeb:
Muaj nyob rau hauvPSL1qib zoo rau daim ntawv thov kev pabcuam
Tsim los ntawmERW txheej txheem- Qhov ntau thiab tsawg los ntawm 1/2 "mus rau 26" OD
28% yam tsawg kawg nkaus elongation muab ductility zoo
Tsis muaj qhov yuav tsum tau kuaj xyuas - haum rau kev siv qhov kub thiab txias
Tus nqi - hloov kho tau zoo los ntawm Qib B rau nruab nrab - kev sib kis
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
Cov kav dej xa hluav taws xob thiab cov txheej txheem kev lag luam
Kev siv cov txheej txheem xws li piling thiab choj txhawb nqa
Thaum ordering, qhia:API 5L PSL1 Qib X42 ERW steel yeeb nkab, Qhov Loj (OD x WT), Ntev, Xaus Xaus, thiab Txheej Txheej Txheem. Rau cov ntawv thov uas xav tau kev lees paub qis -kub toughness lossis qaub kev pab cuam, qhia meejAPI 5L PSL2 Qib X42hloov.
