API 5L X70 Longitudinal Submerged Arc Vuam (LSAW) Pipe
Txheej txheem cej luam
API 5L X70 LSAW yeeb nkab yog lub siab - lub zog pipeline steel khoom tsim siv cov txheej txheem longitudinal submerged arc vuam. Nws yog tsim los rau siab -siab, ntev- kis tau tus mob ntawm cov roj thiab cov nkev, tshwj xeeb tshaj yog nyob rau hauv kev xav tau ib puag ncig.
Cov ntsiab lus tseem ceeb
| Qeb | Specification | Paub meej |
|---|---|---|
| Txuj | API Specification 5L | PSL1 los yog PSL2 |
| Qib | X70 (L485) | Yam tsawg kawg nkaus Yield Strength:70,000 psi (483 MPa) |
| Txheej txheem | LSAW (UOE/JCOE) | Longitudinal seam, Submerged Arc Welded |
| Qhov ntau thiab tsawg | OD: 18" - 64" (457 - 1626 hli) | WT: 8 - 40 mm |
Hom Tshuaj Chemical Composition (PSL2)
| Lub ntsiab | Cov ntsiab lus (max %) | Lus hais |
|---|---|---|
| Cov pa roj carbon (C) | 0.12 | Tsawg carbon rau weldability |
| Manganese (Mn) | 1.70 | Lub hauv paus tseem ceeb ntxiv dag zog |
| Niobium (Nb) | 0.05 - 0.08 | Microalloying rau grain refinement |
| Vanadium (V) | 0.06 | Ua kom dej nag ntxiv |
| Titanium (Ti) | 0.025 | Nplej loj tswj |
| Carbon sib npaug (CE) | Tsawg dua lossis sib npaug li 0.43% | Xyuas kom zoo weldability |
Mechanical Properties
| Khoom | Yuav tsum tau (min) | Hom kab mob |
|---|---|---|
| Yield zog (Rt0.5) | 483 MPa (70,000 psi) | 490 - 600 MPa |
| Tensile zog (Rm) | 565 MPa (82,000 psi) | 570 - 690 MPa |
| Yield-rau-Tensile Ratio | Tsawg dua lossis sib npaug li 0.93 | 0.88 - 0.92 |
| Elongation | Raws li API 5L formula | Ntau dua lossis sib npaug li 18% |
| Charpy Impact (-10 degree) | Qhov project- tshwj xeeb | Feem ntau Ntau dua lossis sib npaug rau 60 J |
Manufacturing & Quality Control
| Theem | Txheej txheem tseem ceeb | Kev kuaj xyuas zoo |
|---|---|---|
| Phaj | TMCP (Thermo-Cov Txheej Txheem Kev Tswj Xyuas Tshuab) | Kev kuaj ultrasonic (UT) |
| tsim | UOE lossis JCOE method | Dimensional soj ntsuam |
| Vuam | Sab hauv & Sab Nraud SAW | 100% UT / RT ntawm weld seam |
| Kev nthuav dav | Mechanical expansion (1.0-1.5%) | Txhim kho roundness & kev ntxhov siab nyem |
| Kev sim | Hydrostatic, NDT, Mechanical tests | Tag nrho ua raws li API 5L |
Cov ntawv thov siv
Mainline kis tau tus mob pipelines(onshore & offshore)
Siab -pas kis tau tus mob network
Lim-raws li cov kav dej tsim(Seismic / Arctic cheeb tsam)
Cov kav dej ua kua qaub(nrog HIC- cov qib resistant)
Qhov zoo ntawm X70 LSAW Pipe
Siab zog - rau - Qhov hnyav piv:Tso cai rau kev ua haujlwm siab dua lossis txo cov phab ntsa tuab.
Zoo heev Low-Tsub Toughness:Haum rau arctic thiab txias kev nyab xeeb daim ntaub ntawv.
Superior Weld Integrity:Cov txheej txheem SAW muab qhov zoo sib xws, siab -welds zoo.
Pov thawj Performance:Siv dav hauv cov kav dej loj thoob ntiaj teb.
Sib piv nrog Lwm Qib
| Qib | Min Yield zog | Hom Siv Case | Tus nqi txheeb ze * |
|---|---|---|---|
| X65 | 448 MPa ua | Txheem siab - cov kab siab | 1.00 |
| X70 | 483 MPa ua | Xav kom siab - kab siab | 1.10 - 1.15 |
| X80 | 552 MPa ua | Ultra-siab siab, muaj peev xwm optimization | 1.25 - 1.35 |
* Index yog kwv yees thiab sib txawv los ntawm cov chaw tsim khoom thiab cov phiaj xwm tshwj xeeb.
Ordering Information
Thaum qhia txog API 5L X70 LSAW yeeb nkab, txhais:
Ntau (meters lossis tons), OD, WT, Ntev
API 5L PSL qib (1 lossis 2)
Cov kev xav tau ntxiv (piv txwv li, HIC tsis kam, qis- qhov kub thiab txias)
Xaus kev npaj thiab txheej txheem
