Thaum ob leegAPI 5L X52 PSL1thiabPSL2qhia tib yam tsawg kawg nkaus tawm lub zog ntawm 52,200 psi (360 MPa), lawv tau tsim rau cov kev pabcuam sib txawv.
PSL2yog tus qauv nruj dua uas tsim los rau siab -siab, kev tsim kho tseem ceeb, thaumPSL1yog cov yeeb nkab txheem zoo rau kev siv dav dav.
Lub rooj sib piv
| Feature | X52 (L360) PSL1 | X52 (L360) PSL2 |
| Yield zog | Min: 52.2 ksi (360 MPa) | 52.2 - 67.4 ksi (360-465 MPa) |
| Tensile zog | Min: 66.7 ksi (460 MPa) | 66.7 - 110.2 ksi (460-760 MPa) |
| Impact Testing (CVN) | Tsis xav tau | Yuav tsum tau(feem ntau ntawm 0℃lossis -20 degree) |
| Chemistry (CEQ) | Tsis muaj kev txwv nruj | Kev txwv nruj(feem ntau Tsawg dua lossis sib npaug rau 0.43) |
| Traceability | Basic | Tag nrho Traceability(Melt rau yeeb nkab) |
| Weld Kho ntawm Lub Cev | Tso cai | Txwv tsis pub |
Kev sib txawv
Mechanical Property "Windows"
PSL1:Tsuas yog xav kom cov yeeb nkab yog "muaj zog txaus" (nws yuav tsum tau raws li qhov tsawg kawg nkaus tawm los). Tsis muaj kev txwv sab saud.
PSL2:Qhia ob qho tib si ayam tsawg kawg nkaus thiab siab kawgrau yield thiab tensile zog.
Vim li cas?Yog tias X52 yeeb nkab muaj zog heev, nws yuav nyuaj heev thiab nkig. Hauv siab - cov kav dej siab, cov kws tsim khoom xav tau cov hlau kom muaj peev xwm hloov tau me ntsis
Fracture Toughness (Lub Charpy Test)
Qhov no yog qhov sib txawv tseem ceeb tshaj plaws rau kev nyab xeeb.
PSL1:Tsis tas yuav muaj kev cuam tshuam.
PSL2:Yuav tsum tau uaCharpy V-notch (CVN) test.
Kev cuam tshuam:Qhov kev sim no ua pov thawj tias cov yeeb nkab tuaj yeem nqus tau lub zog thiab nres qhov tawg ntawm kev sib kis. PSL1 yeeb nkab yuav tawg zoo li iav nyob rau hauv lub siab nyob rau hauv cov huab cua txias, whereas PSL2 yeeb nkab yog guaranteed nyob twj ywm tawv.
Tshuaj Purity thiab Weldability
Purity:PSL2 muaj ntau qhov kev txwv qis tshaj plaws rauSulfur (S)thiabPhosphorus (P)tshaj PSL1. Qhov no ua rau "huv" steel nrog tsawg dua cov ntsiab lus tsis muaj zog.
Weldability:PSL2 nruj saib xyuas covCarbon sib npaug (CEQ). Tsawg CEQ kom ntseeg tau tias cov yeeb nkab tuaj yeem txuas tau yooj yim hauv thaj teb yam tsis muaj cua sov- thaj chaw cuam tshuam (HAZ) ua nkig lossis tawg.
Traceability thiab Quality Control
PSL1:Tsis xav tau tag nrho traceability. Thaum nws dhau qhov kev tshuaj xyuas, cov ntaub ntawv tshwj xeeb ntawm cov cua sov steel tsis yog ib txwm khi rau txhua lub yeeb nkab.
PSL2:Yuav tsum tautag nrho traceability. Txhua cov yeeb nkab tau muab tus lej tshwj xeeb uas taug qab nws rov qab mus rau qhov tshwj xeeb batch ntawm molten steel (lub tshav kub).
Kho:Hauv PSL1, lub zeb tuaj yeem vuam- kho qhov chaw me me ntawm lub cev yeeb nkab. HauvPSL2, txhua qhov kev kho vuam ntawm cov yeeb nkab lub cev raug txwv nruj heev.
Daim Ntawv Thov: Yam twg koj yuav tsum xaiv?
Xaiv X52 PSL1 yog:
Koj tab tom thauj dej los yog tsawg - cov kua dej siab.
Cov yeeb nkab yog siv rau cov hom phiaj (piling, signposts).
Cov phiaj xwm nyiaj txiag nruj heev thiab ib puag ncig tsis yog - tseem ceeb.
Xaiv X52 PSL2 yog:
Koj thaujnatural gas los yog roj avnyob rau hauv siab.
Cov yeeb nkab yuav siv rau hauvntug hiav txwvlos yog subsea ib puag ncig.
Lub raj xa dej nyob hauv ibhuab cua txiasqhov twg brittle tsis ua hauj lwm yog ib qho kev pheej hmoo.
Qhov project yuav tsum ua raws li nruj kev nyab xeeb thiab ib puag ncig cov cai.
GNEE API Yeeb Nkab txheej txheem kab
GNEE API Pipe Test khoom
GNEE API Pipe daim ntawv pov thawj
Puas yog koj tab tom nrhiav API 5L X52 PSL2 kav nrog tag nrho MTC thiab cov ntawv ceeb toom cuam tshuam?Tiv tauj peb rau kev sab laj kev tshaj lij thiab kev tshaj tawm hnub no.
FAQ
PSL sawv cev rau dab tsi?
Hauv API 5L steel yeeb nkab qauv,PSLsawv rauKhoom Specification Level.
Nws yog tus qauv siv los txheeb xyuas qhov zoo thiab kev xav tau ntawm cov kav dej steel:
PSL1:Standard zoo theem.
PSL2:Ib qib siab dua thiab nruj dua qhov zoo, muaj cov kev cai nruj dua rau cov tshuaj muaj pes tsawg leeg, lub zog siv tshuab, thiab yuav tsum tau kuaj.
API 5L PSL 2 yog dab tsi?
API 5L PSL 2yog qhov siab dua thiab nruj dua ntawm obProduct Specification Levelstxhais los ntawm American Petroleum Institute (API) rau cov kav dej siv hauv kev lag luam roj thiab roj.
Thaum PSL 1 muab tus qauv zoo rau kev siv dav dav,PSL 2yog qib "engineered" uas tsim los rau siab -siab, offshore, lossis ib puag ncig tseem ceeb uas muaj kev nyab xeeb thiab kev tiv thaiv tawg yog qhov tseem ceeb.
