Taw qhia rau L360 Steel Yeeb Nkab
L360 steel yeeb nkab, tseem hu uaL360 Kab Yeeb Nkab, yog lub siab - lub zog, qis {{{{{}} Alloy ineloy Steel Thauj Tshuab hauv cov roj thiab roj kev lag luam. Tus "l" sawv ntsug rau "kab yeeb nkab," thiab "360" qhia nws qhov tsawg kawg nkaus tau lees lub zog ntawm360 MPa(lossis 52,000 psi).
Nws yog ib qib feem ntau tau teev tseg rau onshore thiab offshore roj thiab roj kev sib kis roj thiab siv roj pipelines. Raws li API 5L tus qauv, L360 yog sib npaug rau API 5L Qib B (PSL 2) thiab keeb kwm hu uaX52(qhov twg "x" sawv rau kom muaj zog zog thiab "52" rau 52,000 PSI).
Cov yam ntxwv tseem ceeb:
Lub zog siab:Haum rau high -} qhov kev siv siab.
Zoo toughness:Muab kev tawm tsam kom tawg.
Zoo heev Weldability:Pab txhawb kev yooj yim thiab txhim khu kev qha vuam vuam vuam.
Corrosion Kuj:Feem ntau siv nyob rau hauv kev sib txuas nrog cov txheej txheem sab nraud (FBE, 3LPE) thiab sab hauv ntaub qhwv rau corrosion tiv thaiv.
Tus Thawj Kav: API 5L
L360 kav yog tsim raws li covAPI 5L (American Petroleum Lub Chaw Tso Siab Tshwj Xeeb 5L)Txheem. Tus qauv no txhais tau ob theem khoom lag luam tshwj xeeb:
API 5L PSL 1:Cov qauv uas yuav tsum muaj tshuaj lom neeg thiab cov khoom siv neeg kho tshuab.
API 5L PSL 2:Cov kev xav tau ntau dua, suav nrog kev siv tshuaj lom neeg tshuaj tiv thaiv weldability rau weldability ve {}} Tsom Xyooj qhov kev sim (NDT), thiab ntau dua hydrostatic sim nias.L360 feem ntau yog khoom siv PSL 2.
Cov Khoom Tsis Cov Ntaub Ntawv & Cov Ntaub Ntawv Txheej Txheem
Cov kab hauv qab no nthuav qhia cov ntsiab lus tseem ceeb rau l360 psl 2 kav dej raws li API 5L.
Cov Lus 1: Tshuaj lom neeg muaj pes tsawg leeg (API 5l psl {{}} qhov feem pua siab tshaj plaws los ntawm qhov hnyav)
Qhov muaj pes tsawg leeg tseem ceeb heev rau kom ua kom muaj zog ntawm weldability thiab cov neeg kho tshuab. TusCarbon sib npaug (CE)yog ib tus nqi suav uas yuav tsum tau tswj hwm.
| Lub ntsiab | Qib Qib MAX (%) | Lwm Txoj Kev Kawm Max (%) | Sau ntawv |
|---|---|---|---|
| Carbon (c) | 0.24 | 0.22 | Txo cov pa hluav taws xob hloov kho weldability. |
| Manganese (mn) | 1.40 | 1.40 | Nce lub zog. |
| Phosphorus (p) | 0.025 | 0.025 | Impurity, tswj kom tiv thaiv brittleness. |
| Sulphur (s) | 0.015 | 0.015 | Impurity, tswj kom txhim kho kev nruj. |
| Carbon sib npaug (CE) | 0.43 | 0.43 | CE=C + MN / 6 + (cr + mo + v) / {} (ni + cu) / 15 |
Nco tseg: Tus qauv thiab lwm cov qib kawm muaj qhov sib txawv me me hauv cov khoom tso cai xws li Silicon, Vanadium, tab sis cov kev txwv tseem ceeb saum toj no yog sib xws.
Rooj 2: Cov khoom siv neeg kho tshuab (API 5L PSL 2)
Cov khoom no tau tshawb xyuas los ntawm kev xeem txhua yam.
| Ntiag tug | Qhov toob kas | Txoj kev xeem |
|---|---|---|
| Yield zog (min) | 360 MPa (52,200 PSI) | Tensile Xeem |
| Yield zog (Max) | 530 MPa (76,900 PSI) | Tensile Xeem |
| Tensile lub zog (min) | 460 MPa (66,700 PSI) | Tensile Xeem |
| Elongation (min) | Nyob ntawm cov qauv loj thiab tensile lub zog | Tensile Xeem |
| Charpy V - Cov Lus Cuam Tshuam Tsis Yooj Yim | Yuav xav tau | Kev nqus lub zog yuav tsum tau raws cov txiaj ntsig ntawm qhov tseem ceeb ntawm kev tsim qhov kub. |
Cov Lus 3: Cov Qauv Qhov Ntau thiab Qhov Loj
L360 yeeb nkab muaj nyob rau ntau qhov ntau thiab tsawg raws li ob qho tib si seamless (s) thiab welded (EW, ERW, pom).
| Ntaus | Sab Nraum Inch (OD) Ntau Yam | Phab Ntsa Thickness (Wt) Ntau Yam | Ntev ntev |
|---|---|---|---|
| Seamless (s) | 10.3 hli txog 1,219 hli (0.4 "txog 48") | Sib txawv nrog txoj kab uas hla, piv txwv li, 2.4mm txog 100 hli + | Ib Leeg Random: ~ 6M, Ob Chav Random: ~ 12m |
| Cov Hluav Taws Xob Hluav Taws Xob Welded (ERW) | 21.3 hli rau 1,219 hli (0.84 "txog 48") | Sib txawv nrog lub taub | Ib Leeg Random: ~ 6M, Ob Chav Random: ~ 12m |
| Submerged Arc Welded (pom) | 406 hli txog 2,540 hli (16 "rau 100") | 6.4 hli txog 50 hli + | Feem ntau 12 metres lossis raws li yuav tsum tau ua |
Hom L360 Kav
L360 seamless (L360 s):Tsim tau yam tsis muaj veam tog weld. Qhov zoo tagnrho rau high - qhov kev siv tseem ceeb thiab cov kev pabcuam tseem ceeb nyob qhov twg Weld kev ncaj ncees yog qhov kev txhawj xeeb tseem ceeb.
L360 erw (hluav taws xob tiv thaiv welded):Tsim los ntawm daim ntawv dov thiab welded siv hluav taws xob tiv thaiv. Tus nqi -} Siv tau txiaj ntsig zoo rau ntau cov ntawv thov hluav taws xob.
L360 pom (submerged arc welded):Siv rau loj - txoj hauj lwm uas hla hla. Weld tau ua nyob rau hauv daim pam ntawm flux. Muaj raws li:
L360 sawl (Longitudinally Welded):Weld leeg khiav mus sib txuas rau cov yeeb nkab ntev.
L360 sawh (Helically Welded):Weld Seam yog kauv yog kauv.
Cov Kev Siv Raug Raug
Onshore thiab offshore roj kis pipelines
Cov Roj Roj Roj Kis Tau Pipelines
Kev Txhaj Tshuaj DejHauv cov roj teb
Slurry thiab txheej txheem pipingHauv kev siv nroj tsuag
Cov qauv piling(hauv qee kis)
Cov Lus Qhia Ntsiab Lus: L360 RU
| Yam zoo | Kev qhia tshwj xeeb |
|---|---|
| Lub hom phiaj | API 5L (PSL 1 lossis PSL 2) |
| Teem nqi | L360 lossis X52 |
| Min. Paib lub zog | 360 MPa / 52,200 psi |
| Min. Lub zog tensile | 460 MPA / 66,700 PSI |
| Tus yam ntxwv tseem ceeb | Zoo heev ua ke ntawm lub zog thiab Veldability |
| Hom Hom Hom Hom | Seamless (s), Erw, pom (ntev & helical) |
| Thawj siv | Roj Thiab Cov Roj Hloov Pipelines |
Txog cov phiaj xwm tshwj xeeb, nws yog qhov tseem ceeb los tham tag nrho API 5L tus qauv ua kom txhua yam ntsuas kub (xws li kev cuam tshuam sim kub, thiab lwm yam) tau ntsib.
