API 5L PSL1 Qib B Ob Chav -Sided Submerged Arc Vuam (DSAW) Hlau Yeeb Nkab
Lub ntsiab lus tseem ceeb
API 5L PSL1 Qib B DSAW (Ob chav -Sided Submerged Arc Vuam) steel yeeb nkabyog tus qauv carbon steel kab yeeb nkab uas tsim los rau American Petroleum Institute specification rau cov kav dej thauj mus los. Qhov kev xaiv "Qib B" qhia txog qhov tsawg kawg nkaus yield zog ntawm35,000 psi (241 MPa), thiab nws yog qib feem ntau siv rau cov kev pabcuam kav dej dav hlau uas qhov kev txhim kho ntawm PSL2 tsis tsim nyog.
Txoj kev tsim khoom DSAW-tseem hu ua LSAW (Longitudinal Submerged Arc Vuam)- yog qhov 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 nyob rau hauv cov roj thiab roj kis tau tus mob, dej mains, thiab structural applications.
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 |
| PSL1 | Khoom Specification Qib 1 - tus qauv zoo nrog cov kev cai yooj yim (tsis muaj qhov yuav tsum tau kuaj xyuas) |
| Qib B | Cov pa roj carbon steel qib nrog qhov tsawg kawg nkaus lub zog ntawm 35,000 psi (241 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 |
| Kuj Paub Raws li | LSAW (Longitudinal Submerged Arc Vuam) - thaum lub vuam seam khiav longitudinally raws cov yeeb nkab |
Cov ntsiab lus tseem ceeb
| Yam ntxwv | Kev piav qhia |
|---|---|
| Txuj | API 5L (46th Edition, ua raws li ISO 3183) |
| Khoom Specification Level | PSL1 - tus qauv zoo |
| Qib | B (L245 hauv ISO cim) |
| Yam tsawg kawg Yield Strength | 241 MPa (35,000 psi) |
| Yam tsawg kawg Tensile Strength | 414 MPa (60,000 psi) |
| Kev tsim khoom | DSAW (Ob chav -Sided Submerged Arc Vuam) / LSAW (Longitudinal Submerged Arc Vuam) |
| Txoj kev tsim | JCOE(progressive J-C-O forming) los yogUAE(U-ing, O-ing, Expanding) |
| Qhov Loj | 406mm txog 1820mm(16 "mus rau 72") OD - raug rau DSAW |
| Phab ntsa Thickness | 6.0mm txog 50mm (txog 75mm rau kev siv tshwj xeeb) |
| Ntev | 6 m txog 12 m txheem; mus txog 18 m muaj |
| Xaus Xaus | Plain xaus, beveled xaus (30℃bevel kaum), threaded |
| Txheej txheej xaiv | Dub xim, kua roj vanish, anti- xeb roj, FBE, 3LPE, thee tar epoxy |
Chemical Composition (API 5L PSL1 Qib B Welded Yeeb Nkab)
| Lub ntsiab | Qhov siab tshaj % | Sau ntawv |
|---|---|---|
| Cov pa roj carbon (C) | 0.26% | Tsawg carbon rau zoo weldability |
| Manganese (Mn) | 1.20% | Muab lub zog |
| Phosphorus (P) | 0.030% | Tswj rau weldability |
| Sulfur (S) | 0.030% | Tswj kom toughness |
Nco tseg: PSL1 tsis muaj qhov yuav tsum tau ua rau lub zog siab tshaj plaws, cov pa roj carbon sib npaug, lossis qhov yuav tsum tau kuaj xyuas.
Mechanical Properties (API 5L PSL1 Qib B)
| Khoom | Kev xav tau |
|---|---|
| Yield zog (min) | 241 MPa (35,000 psi) |
| Yield zog (max) | Tsis tau teev rau PSL1 |
| Tensile zog (min) | 414 MPa (60,000 psi) |
| Tensile zog (max) | Tsis tau teev rau PSL1 |
| Elongation | Ib tus qauv API 5L (nws txawv ntawm phab ntsa tuab) |
| Charpy Impact | Tsis xav tau rau PSL1- Tsuas yog PSL2 yuav tsum tau kuaj qhov cuam tshuam |
Dimensional Specifications
| Parameter | Ntau / Tolerance |
|---|---|
| Sab nraud txoj kab uas hla | 406mm txog 1820mm(16 "mus rau 72") - DSAW ntau yam |
| Phab ntsa Thickness | 6.0mm txog 50mm (txog 75mm rau kev siv tshwj xeeb) |
| Txoj kab uas hla Tolerance | ± 0.75% ntawm OD (tseem ceeb) |
| Phab ntsa Thickness kam rau ua | +15% / -12.5% ntawm nominal (tus qauv) |
| Ntev | 6 m txog 12 m txheem; mus txog 18 m muaj |
| Tawm ntawm - ntawm - Roundness | Tsawg dua lossis sib npaug li 1% ntawm OD teev |
Yam Khoom Muaj Ntau Yam (API 5L Qib B DSAW):
| 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" | 1820 | 10.0 - 30.0 |
DSAW/LSAW Manufacturing Process
Ob chav -Sided Submerged Arc Vuam (DSAW), tseem hu ua 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
Welding 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 welds cais noj ib feem ntawm lwm yam, ua rau ib tugib leeg siab -zoo weld nugget
Txoj kev tsim
| Txoj kev | Kev piav qhia | Hom kab |
|---|---|---|
| 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 xaiv- Hlau daim hlau ntsib API 5L PSL1 Qib B uas yuav tsum tau ua
Ntug Kev Npaj- Ntug yog beveled los tsim V-puab zawj
tsim- Cov ntawv hlau yog tsim rau hauv cov duab cylindrical siv JCOE lossis UOE presses
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 lub yeeb nkab tau kuaj xyuas hydrostatic siab (yog tias tau teev tseg)
Ua tiav- Xaus kev, beveling, txheej, thiab kos npe raws li specifications
Kev Ntsuas & Kev Ntsuam Xyuas (PSL1)
| Hom kev xeem | Kev xav tau | Sau ntawv |
|---|---|---|
| Tshuaj ntsuam xyuas | Rau qhov kub ntau | Txheeb xyuas qhov txwv tsis pub muaj ib qho API 5L PSL1 |
| Tensile Test | Rau ntau | Txheeb xyuas qhov tawm los thiab lub zog tensile |
| Flattening Test | Yuav tsum tau | Txheeb xyuas qhov ductility thiab weld kev ncaj ncees |
| Khoov Test | Yuav tsum tau | Verifies weld kev ncaj ncees |
| Charpy Impact Test | Tsis xav tau rau PSL1 | Tsuas yog PSL2 yuav tsum tau kuaj qhov cuam tshuam |
| Hydrostatic Test | Txhua yeeb nkab (thaum teev) | Kev ntsuas siab ncaj ncees |
| Ultrasonic soj ntsuam | 100% ntawm weld seam | Standard xyaum rau DSAW |
| X-Ray Inspection | Rau "T" pob qij txha | Qhov twg strip taub qab welds cuam tshuam kauv seams |
| 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 Qib B
| Feature | PSL1 Qib B | PSL2 Qib B | Qhov tseem ceeb |
|---|---|---|---|
| Cov pa roj carbon (C) max | 0.26% | 0.22% | PSL2 muaj kev tswj nruj dua kom zoo dua weldability |
| Sulfur (S) max | 0.030% | 0.015% | PSL2 muaj 50% txo qis - qhov tseem ceeb rau kev toughness |
| Phosphorus (P) max | 0.030% | 0.025% | PSL2 muaj kev txwv nruj dua |
| Yield zog | 241 MPa min xwb | 241-448 MPa ntau | PSL2 qhia qhov siab tshaj plaws los tiv thaiv ntau tshaj - cov ntaub ntawv muaj zog |
| Tensile zog | 414 MPa min xwb | 414-758 MPa ntau | PSL2 qhia qhov siab tshaj plaws rau qhov sib xws |
| Yield-rau-Tensile Ratio | Tsis tau teev tseg | Tsawg dua lossis sib npaug li 0.93 | PSL2 xyuas kom txaus ductility |
| Kev sim cuam tshuam | Tsis xav tau | Yuav tsum tau | PSL2 lav qis-kub toughness |
| Carbon sib npaug | Tsis xav tau | Muab xam thiab tswj | PSL2 xyuas kom zoo teb weldability |
| NDT Requirements | Txuj | nruj dua | PSL2 muab kev kuaj pom zoo dua |
| 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 | Onshore thiab offshore pipelines rau cov roj crude, natural gas, thiab refined khoom |
| Kev xa dej Mains | Loj - txoj kab uas hla hauv nroog thiab cov kav dej muaj |
| Natural Gas Distribution | Tsawg mus rau nruab nrab - siab roj network |
| Sib sau thiab Flow Lines | Upstream roj thiab roj ua haujlwm |
| Kev siv tus qauv | Piling, choj kev txhawb nqa, kev tsim kho |
| Muaj Txheej Txheem Piping | Refineries, tshuaj nroj tsuag, tsim hluav taws xob |
Qhov Zoo Tshaj Plaws
| Qhov zoo | Kev piav qhia |
|---|---|
| Tus nqi -Cov | PSL1 yog kev lag luam ntau dua li PSL2 - haum rau cov kev pabcuam dav dav |
| Zoo zog | 35,000 psi tawm los - tus qauv hauv paus rau kev siv kav dej |
| Weldability zoo heev | Tsawg carbon cov ntsiab lus ua kom zoo teb weldability |
| Loj Loj Muaj peev xwm | DSAW tsim cov kav dej ntawm 16 "mus rau 72" OD - zoo tagnrho rau cov ntawv loj - txoj kab uas hla |
| High Weld Integrity | Ob -sab vuam tsim ib qho siab - zoo weld nugget nrog 100% UT tshuaj xyuas |
| Dav Muaj | Feem ntau stocked los ntawm manufacturers thoob ntiaj teb |
| Daim ntawv pov thawj dual | Feem ntau dual - ntawv pov thawj nrog ASTM A53 Qib B rau kev siv cov kav dej dav dav |
| JCOE/UOE tsim | Precise dimensional precision los ntawm kev tsim cov txheej txheem siab heev |
Txheej txheej xaiv
API 5L PSL1 Qib B DSAW yeeb nkab tuaj yeem muab nrog ntau txheej txheej rau kev tiv thaiv corrosion:
| 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 |
| Coal Tar Epoxy | Marine ib puag ncig | Heavy-lub luag haujlwm tiv thaiv |
| 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 |
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
International Approximations
| Txuj | Qib sib npaug | Sau ntawv |
|---|---|---|
| ASTM A53 | Qib B | Zoo sib xws yield zog |
| ASTM A106 1 | Qib B | Zoo sib xws chemistry (seamless) |
| TS EN 10217-1 | P235TR1 / P235TR2 | Zoo sib xws zog |
| GB/T 9711 | L245 | Suav sib npaug |
| TS EN ISO 3183 | L245 | International txheem sib npaug |
| JIS G3454 | TIAB SA 410 | Japanese sib npaug |
Kev txiav txim siab tseem ceeb
1. PSL1 vs. PSL2 Xaiv
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
PSL2: Yuav tsum muaj rau qis- kev pabcuam kub (qis dua 0 degree), kev pabcuam qaub (H₂S ib puag ncig), cov kav dej tswj (FERC, DOT), thiab cov ntawv thov tseem ceeb
2. PSL1 Qib B yog Qib "Cov Neeg Ua Haujlwm"Cov
Qib B PSL1 yog qib feem ntau teev rau cov kev pabcuam dav dav dav dav, muab qhov sib npaug zoo tshaj plaws ntawm lub zog, weldability, thiab tus nqi.
3. DSAW Loj Limitts
DSAW manufacturing rau Qib B feem ntau muaj los ntawm16" to 72" OD
Cov kab me me (hauv qab 16 ") feem ntau yog tsim los ntawm ERW los yog seamless txoj kev
4. Kev sim cuam tshuam
PSL1 uatsis yogxav tau Charpy qhov kev ntsuam xyuas los ntawm tus qauv. Yog tias qhov kev pabcuam kub tau qis dua -, xav txog kev ntsuas qhov cuam tshuam raws li qhov yuav tsum tau ua ntxiv lossis hloov kho rau PSL2.
5. Thib peb-Kev soj ntsuam tog
Muaj cov kev pabcuam tshuaj xyuas suav nrog SGS, BV, Lloyds
6. 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
7. Weldability
Cov ntsiab lus carbon tsawg (tsawg dua lossis sib npaug li 0.26%) ua kom muaj kev sib txuas zoo heev
Haum rau txhua txoj kev vuam txheej txheem (SMAW, GTAW, GMAW, SAW)
Tsis muaj kev tshaj tawm -weld kev kho cua sov yuav tsum tau rau feem ntau thicknesses
Cov ntsiab lus
API 5L PSL1 Qib B Ob chav -Sided Submerged Arc Welded (DSAW/LSAW) steel yeeb nkabyog tus qauv workhorse rau loj - txoj kab uas hla kab ntawv thov. Nrog yam tsawg kawg nkaus tawm lub zog ntawm35,000 psi (241 MPa)thiab tensile zog ntawm60,000 psi (414 MPa), cov khoom no muaj qhov sib npaug ntawm lub zog, weldability, thiab tus nqi -kev ua tau zoo rau cov kev pabcuam dav dav.
Cov yam ntxwv tseem ceeb:
Khoom txheem: API 5L PSL1 Qib B - feem ntau qib rau kev pabcuam dav dav
Yield zog241 MPa (35,000 psi) yam tsawg kawg nkaus - lub hauv paus rau API 5L qib
PSL1 qib zoo: Tsis muaj qhov yuav tsum tau kuaj xyuas; cov qauv kev cai rau kev pabcuam dav dav
DSAW manufacturingtsim cov kav dej los ntawm16" to 72" ODnrog phab ntsa thickness mus txog50 mm
Ob -sab vuamtsim ib lub siab -zoo weld nugget
JCOE lossis UOE tsimcov txheej txheem kom paub meej qhov tseeb qhov tseeb
100% ultrasonic kuajntawm weld seam kom zoo
Weldability zoo heevnrog cov ntsiab lus carbon tsawg (tsawg dua lossis sib npaug li 0.26%)
Tus nqi- zoo- kev xaiv pheej yig tshaj plaws rau loj - kab kab yeeb nkab
Dual ntawv pov thawjmuaj nrog ASTM A53 Qib B
Cov ntawv thov uas muaj xws li:
Roj thiab roj xa mus kav
Kev xa dej mains
Natural gas distribution networks
Sib sau thiab khiav kab
Kev siv cov qauv (piling, choj txhawb nqa)
Industrial txheej txheem kav
Thaum ordering, qhia:API 5L PSL1 Qib B, DSAW / LSAW (Ob chav -Sided/Longitudinal Submerged Arc Welded), Loj (OD x WT), Ntev, Qhov Kawg Finish (plain / beveled), Coating Requirements, thiab Mill Test Certificate to EN 10204 Type 3.1B .
Rau cov ntawv thov uas xav tau kev lees paub qis -kub toughness, nruj dua chemistry tswj, lossis muaj peev xwm ua haujlwm qaub, qhia meejAPI 5L PSL2 Qib Bhloov.
