API 5L PSL1 Qib X42 yog cov khoom siv dav dav thiab dav siv rau kev tsim Longitudinal Submerged Arc Welded (LSAW) kav[siv: 1, citation: 2, citation: 6, citation: 9]. Qhov kev sib xyaw ua ke no yog cov khoom lag luam uas muab los ntawm ntau lub tuam txhab thoob ntiaj teb rau nruab nrab - cov kav dej xa hluav taws xob tsheb thauj mus los thiab kev siv engineering dav dav [citation: 1, citation: 2, citation: 5].
Ntawm no yog cov ncauj lus kom ntxaws specification rau API 5L PSL1 Qib X42 LSAW yeeb nkab:
Cov ntsiab lus tseem ceeb
| Yam ntxwv | Kev piav qhia |
|---|---|
| Txuj | API 5L: Specification rau Kab Yeeb (tam sim no ib tsab ua raws li ISO 3183) [citation: 1, citation: 7]. |
| Khoom Specification Level | PSL1: Cov txheej txheem zoo rau kab yeeb nkab, nrog cov kev cai nruj dua piv rau PSL2 (piv txwv li, tsis muaj qhov yuav tsum tau kuaj xyuas, txwv tsis pub tshuaj lom neeg tsis nruj, thiab lub zog siab tshaj plaws tsis tau teev tseg) [citation: 1, citation: 2, citation: 4]. |
| Qib Steel | X42 (L290): Qhov nruab nrab -lub zog carbon steel qib nyob rau hauv API 5L specification. Qhov "X" qhia txog qib pipeline, thiab "42" sawv cev rau qhov tsawg kawg nkaus yield zog hauv ksi (42,000 psi) [citation: 1, citation: 4, citation: 6]. |
| Txheej txheem | LSAW (Longitudinal Submerged Arc Vuam): Cov kav dej yog tsim los ntawm kev tsim cov hlau phaj rau hauv lub tog raj kheej (siv JCOE, UOE, los yog cov txheej txheem zoo sib xws) thiab vuam cov kav ntev ob sab hauv thiab sab nraud siv cov txheej txheem submerged arc [citation: 1, citation: 2, citation: 5]. |
| Tshuaj muaj pes tsawg leeg (max %) [citation:4, citation:5] | |
| Cov pa roj carbon (C): 0.26-0.28 | |
| Manganese (Mn): 1.20-1.30 | |
| Phosphorus (P): 0.030 | |
| Sulfur (S): 0.030 | |
| Mechanical Properties (min) [citation: 1, citation: 4, citation: 5] | |
| Yield zog:290 MPa (42,000 psi) | |
| Tensile zog:414-415 MPa (60,000 psi) | |
| Elongation:Nws txawv ntawm phab ntsa thickness, feem ntau 28% yam tsawg kawg nkaus | |
| Hom Loj Ntau Yam [citation: 2, citation: 5, citation: 9, citation: 10] | |
| Sab nraud txoj kab uas hla:219mm txog 2134mm (kwv yees . 8" rau 84") | |
| Phab ntsa Thickness:5 hli txog 75 hli (txog 120 hli muaj los ntawm qee cov tuam ntxhab) | |
| Ntev:3 m txog 18.3 m (customizable, mus txog 32 m muaj rau cov kev siv tshwj xeeb) | |
| Kev tsim cov kauj ruam [citation: 2, citation: 5, citation: 9] | 1. steel phaj xaiv thiab ntug milling. 2. Ntug crimping thiab tsim siv cov txheej txheem JCOE lossis UOE. 3. Sab hauv thiab sab nraud submerged arc vuam (ntau-wire SAW). 4. Mechanical expanding (rau UOE/JCOE). 5. Tsis yog- kuaj kev puas tsuaj (Ultrasonic, X-ray). 6. Kev ntsuas hydrostatic. 7. Xaus ntsej muag thiab beveling. |
| Common Applications [citation: 1, citation: 3, citation: 5, citation: 8] | Nruab nrab- cov roj thiab cov kav xa hluav taws xob siab; sib sau ua ke thiab ntws kab hauv cov dej ntws; natural gas faib network; kev xa dej mains; kev siv cov qauv; onshore thiab offshore tej yaam num; chemistry kev lag luam; fais fab engineering. |
| Daim ntawv pov thawj | Mill Test Certificate feem ntau yog muab raws li API 5L qhov yuav tsum tau ua, feem ntau nrog thib peb -kev tshuaj xyuas los ntawm SGS, BV, Lloyds [citation: 3, citation: 4]. |
🔍 Cov ntsiab lus tseem ceeb kom nkag siab
Dab tsi "X42" txhais tau tias: Hauv API 5L, Qib X42 (tseem hu uaL290nyob rau hauv ISO cim) muaj qhov tsawg kawg nkaus yield zog ntawm290 MPa (42,000 psi)thiab qhov tsawg kawg nkaus tensile lub zog ntawm414 MPa (60,000 psi)[siv: 1, citation: 4]. Nws muaj kwv yees li 20% siab dua qhov muaj zog dua li Qib B (241 MPa), tso cai rau kev ua haujlwm siab dua lossis txo cov phab ntsa tuab.
PSL1 vs PSL2: Kev xaiv ntawm PSL1 thiab PSL2 yog qhov tseem ceeb. PSL1 yog tus qauv zoo nrog cov kev cai yooj yim. Qhov sib txawv tseem ceeb rau PSL1 [citation:1, citation:2, citation:4]:
Chemistry: Cov qauv txwv (C Tsawg dua lossis sib npaug rau 0.28%, Mn Tsawg dua lossis sib npaug rau 1.30%, S / P Tsawg dua lossis sib npaug li 0.030%).
Lub zog: Tsuas yog qhov tsawg kawg nkaus tawm los thiab lub zog tensile tau teev tseg.
Kev ntsuam xyuas cuam tshuam: Tsis xav tau.
Kev siv yam: Haum rau cov kev pabcuam dav dav dav dav, cov kab sib sau ua ke, thiab cov tshuab xa tawm uas tsis muaj kev txhim kho toughness thiab kev tswj nruj dua tsis tsim nyog.
PSL2: Yuav tsum muaj kev tswj cov tshuaj lom neeg nruj dua (qis C, P, S), qhia txog qhov siab tshaj plaws nrog rau qhov tsawg kawg nkaus lub zog txwv (xws li, X42N max yield 495 MPa), mandates Charpy V-notch impact testing, and has more stringent NDT requirements [citation:1, citation:4]. PSL2 feem ntau xav tau rau kev pabcuam tseem ceeb, kev pabcuam qaub (NACE MR0175/ISO 15156), qis-kev siv kub, thiab cov kav dej tswj hwm lub cev xws li FERC lossis DOT .
LSAW Manufacturing for X42: Thaum X42 muaj nyob rau hauv ntau hom kev tsim khoom (seamless, ERW, SSAW), cov txheej txheem LSAW yog qhov zoo- haum rau kev tsim khoomloj - txoj kab uas hla, tuab - phab ntsacov kav dej [citation: 1, citation: 2, citation: 6]. Cov txheej txheem ob -sided submerged arc vuam txheej txheem ua kom muaj kev sib sib zog nqus thiab vuam zoo, ua rau nws zoo tagnrho rau kev siv siab -.
Kev Tsim Kho Tshuab: LSAW kav rau X42 feem ntau yog tsim los sivJCOE (J-C-O-Expanding)los yogUOE (U-ing-O-ing-Expanding)cov txheej txheem, uas ua kom paub meej geometric qhov ntev thiab qhov zoo ntawm qhov tseeb [citation: 2, citation: 5].
📊 Phab ntsa Thickness Muaj los ntawm txoj kab uas hla
Cov lus hauv qab no qhia txog cov phab ntsa tuab tuab rau X42 LSAW kav raws li cov ntaub ntawv tsim khoom:
| OD (inch) | OD (mm) | Phab ntsa Thickness Range (mm) |
|---|---|---|
| 16" | 406 | 6.0 - 13.0 |
| 20" | 508 | 6.0 - 15.0 |
| 24" | 610 | 6.0 - 17.0 |
| 30" | 762 | 7.0 - 20.0 |
| 36" | 914 | 8.0 - 23.0 |
| 40" | 1016 | 8.0 - 25.0 |
| 48" | 1219 | 9.0 - 27.0 |
| 56" | 1422 | 10.0 - 28.0 |
| 60" | 1524 | 10.0 - 28.0 |
| 64" | 1626 | 10.0 - 29.0 |
| 72" | 1829 | 10.0 - 29.0 |
⚙️ Kev tsim khoom zoo
Niaj hnub nimno LSAW ntau lawm rau X42 PSL1 kav suav nrog:
Multi-wire submerged arc vuam: Feem ntau 3-4 xov hlau rau hauv vuam thiab 2-3 xov hlau rau sab nraud vuam, ua tiav vuam ceev tshaj 1.5 meters ib feeb.
Tom qab -welding kev kho mob: Mechanical expanding (expansion rate kwv yees li 1.2%) kom tshem tawm cov kev ntxhov siab seem.
100% NDT: Ultrasonic kuaj thiab X-ray soj ntsuam ntawm lub vuam seam.
Kev ntsuam xyuas hydrostatic: Txhua cov yeeb nkab ib leeg raug kuaj los xyuas qhov tseeb siab.
Cov ntsiab lus
Hauv kev xaus,API 5L PSL1 Qib X42 LSAW yeeb nkabyog ib qho zoo -tsim, nruab nrab- cov khoom muaj zog uas sib txuas cov khoom txhim khu kev qha ntawm X42 steel nrog cov txheej txheem tsim khoom LSAW muaj zog [citation:1, citation:2, citation:5]. Nws yog qhov kev xaiv nrov rau nruab nrab - roj thiab roj xa mus, sib sau cov kab, thiab cov ntawv xa dej uas muaj zog dua li qib B yog xav tau tab sis qhov uas yuav tsum tau ua kom zoo dua ntawm PSL2 tsis tsim nyog [citation: 1, citation: 4]. Cov txheej txheem LSAW tso cai rau kev tsim cov kav dej nrog cov kab loj (txog 84 "+), cov phab ntsa tuab (txog 75-120 hli), thiab zoo heev weld kev ncaj ncees, ua rau nws haum rau ntau yam kev tsim kho vaj tse [citation: 2, citation: 5, citation: 9].API 5L PSL1 Qib X42 LSAW yeeb nkabnrog rau qhov yuav tsum tau muaj (OD, phab ntsa tuab, ntev) thiab lwm yam kev xav tau ntxiv xws li kev pabcuam qaub (NACE MR0175) yog tias xav tau.
