Pipeline steel yog ib hom hlau siv los tsim cov roj thiab roj pipeline tsheb thauj mus los.Raws li cov cuab yeej thauj mus los ntev rau cov roj thiab cov nkev, cov kav dej muaj qhov zoo ntawm kev lag luam, kev nyab xeeb thiab tsis muaj kev cuam tshuam.
Pipeline steel daim ntawv thov
Cov yeeb nkab steelCov ntaub ntawv cov khoom muaj xws li seamless steel kav thiab welded steel kav, uas yuav muab faib ua peb pawg: alpine, high-sulfur cheeb tsam thiab seabed nteg.Cov kav dej nrog hnyav ua hauj lwm ib puag ncig muaj cov kab ntev thiab tsis yooj yim los tswj, thiab muaj cov kev cai nruj heev. .
Muaj ntau qhov kev sib tw los ntawm cov raj xa dej muaj xws li: feem ntau ntawm cov roj thiab roj av yog nyob rau hauv cheeb tsam polar, cov ntawv dej khov, cov suab puam, thiab cov dej hiav txwv, thiab cov xwm txheej ntuj kuj hnyav heev;los yog txhawm rau txhim kho kev thauj mus los zoo, txoj kab uas hla ntawm lub raj xa dej txuas ntxiv mus tas li, thiab lub zog xa khoom tau nce ntxiv.
Pipeline Steel Properties
Los ntawm kev ntsuam xyuas tag nrho ntawm txoj kev loj hlob ntawm cov roj thiab roj pipelines, pipeline nteg tej yam kev mob, lub ntsiab tsis ua hauj lwm hom thiab tsis ua hauj lwm ua, pipeline steel yuav tsum muaj zoo mechanical zog (cov phab ntsa tuab, siab zog, siab toughness, hnav tsis kam), thiab kuj yuav tsum muaj. txoj kab uas hla loj, Nws yuav tsum muaj txoj kab uas hla loj, weldability, txias thiab tsis kub tsis kam, corrosion kuj (CO2), tsis kam mus rau seawater thiab HIC, SSCC kev ua tau zoo, thiab lwm yam.
① Lub zog loj
Pipeline steel tsis tsuas yog yuav tsum muaj lub zog tensile siab thiab lub zog tawm los, tab sis kuj yuav tsum muaj qhov sib piv ntawm 0.85 ~ 0.93.
② High cuam tshuam toughness
kev cuam tshuam siab toughness tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm kev tiv thaiv kev tawg.
③ Tsawg qhov hluav taws xob hloov pauv kub
Cov cheeb tsam hnyav thiab kev nyab xeeb xav tau cov raj xa dej kom muaj qhov hloov pauv tsis txaus ntawm qhov kub thiab txias.Lub shear cheeb tsam ntawm DWTT (Trop Weight Tear Test) tau dhau los ua qhov ntsuas tseem ceeb los tiv thaiv kev ua tsis tiav ntawm cov kav dej.Cov lus qhia dav dav yuav tsum tau ua. qhov tawg shear cheeb tsam ntawm cov qauv yog ≥85% ntawm qhov qis tshaj qhov ua haujlwm kub.
④ Kev tiv thaiv zoo heev rau hydrogen-induced cracking (HIC) thiab sulfide stress corrosion cracking (SSCC)
⑤ Kev ua haujlwm vuam zoo
Zoo weldability ntawm steel yog ib qho tseem ceeb heev los xyuas kom meej qhov kev ncaj ncees thiab vuam zoo ntawm cov kav dej.
Pipeline Steel Qauv
Tam sim no, cov qauv kev lag luam tseem ceeb ntawm cov roj thiab roj xa hluav taws xob cov kav hlau siv hauv kuv lub teb chaws suav nrogAPI 5L, DNV-OS-F101, ISO 3183, thiab GB/T 9711, thiab lwm yam. Qhov xwm txheej dav dav yog raws li hauv qab no:
① API 5L (kab yeeb nkab specification) yog ib tug dav saws specification tsim los ntawm Maine Petroleum lub koom haum.
② DNV-OS-F101 (submarine pipeline system) yog ib qho kev qhia tshwj xeeb uas tsim los ntawm Det Norske Veritas rau cov kav dej hauv nkoj.
③ ISO 3183 yog tus qauv tsim los ntawm Lub Koom Haum Thoob Ntiaj Teb rau Kev Ua Qauv rau kev xa khoom ntawm cov kav hlau xa mus rau roj thiab roj.Cov txheej txheem no tsis cuam tshuam nrog kev tsim cov kav dej thiab kev teeb tsa.
④ Qhov tseeb version ntawm GB / T 9711 yog 2017 version.Qhov version no yog raws li ISO 3183: 2012 thiab API Spec 5L 45th Edition.raws li ob qho tib si.Raws li ob tus qauv siv, ob yam khoom specification qib tau teev tseg: PSL1 thiab PSL2.PSL1 muab cov txheej txheem zoo ntawm cov kab yeeb nkab;PSL2 ntxiv qhov yuav tsum tau muaj xws li tshuaj lom neeg muaj pes tsawg leeg, tsis muaj zog toughness, lub zog muaj zog thiab ntxiv kev kuaj tsis muaj kev puas tsuaj (NDT).
API SPEC 5L thiab ISO 3183 yog thoob ntiaj teb cov kab yeeb nkab tshwj xeeb.Hauv qhov sib piv, feem ntau cov tuam txhab roj hauv ntiaj teb tau siv los sivAPI SPEC 5L specifications raws li qhov yooj yim specification rau pipeline steel kav yuav khoom.
Cov ntaub ntawv xaj
Daim ntawv cog lus cog lus rau pipeline steel yuav tsum muaj cov ntaub ntawv hauv qab no:
① Quantity (tag nrho cov huab hwm coj lossis tag nrho cov kav hlau kav);
② Cov qib zoo (PSL1 lossis PSL2);
③Cov yeeb nkab steelhom (seamless los yogwelded cev, tshwj xeeb vuam txheej txheem, yeeb nkab kawg hom);
④ Raws li cov qauv, xws li GB/T 9711-2017;
⑤ qib steel;
⑥ Sab nraud txoj kab uas hla thiab phab ntsa thickness;
⑦ Ntev thiab ntev hom (tsis txiav lossis txiav);
⑧ Txiav txim siab qhov yuav tsum tau siv cov ntawv ntxiv.
Cov qib steel yeeb nkab thiab qib steel (GB / T 9711-2017)
| Normative theem | steel yeeb qib | qib steel |
| PSL1 | l175 ua | A25 |
| l175 wb | A25 P | |
| L210 | A | |
| l245 ua | B | |
| l290 ua | X42 | |
| l320 ua | X46 | |
| l360 ua | X52 | |
| l390 ua | X56 | |
| l415 ua | X 60 | |
| l450 ua | X 65 | |
| l485 ua | X 70 | |
| PSL2 | L245R | BR |
| L290 R | X42 R | |
| L245 N | BN | |
| L290 N | X42 N | |
| L320 N | X46 N | |
| L360 N | X52 N | |
| L390 N | X56 N | |
| L415 N | X 60 N | |
| l245 qw | BQ | |
| l290 qw | x42 qw | |
| l320 qw | x46 qw | |
| l360 qw | x52 qw | |
| l390 qw | x56 qw | |
| l415 qw | x60 qw | |
| l450 qw | x65 qw | |
| l485 qw | x70 qw | |
| l555 qw | x80 qw | |
| l625 qw | x90 qw | |
| l690 qw | X 100 M | |
| L245 M | BM | |
| L290 M | X42 M | |
| L320M | X46 M | |
| L360M | X52 M | |
| l390m ua | x56m ua | |
| L415 M | X 60 M | |
| L450 M | X 65 M | |
| l485m ua | X 70 M | |
| L555 M | X80 M | |
| l625m ua | X90 M | |
| l690m ua | X 100 M | |
| l830m ua | X 120 M |
Post lub sij hawm: Jan-30-2023