1. Lub ntsiab lus dav
L415 PSL1 Carbon Steel Kab Yeebyog lub siab -lub zog, carbon-manganese steel yeeb nkab tsim los rau kev xa cov kua dej. Lub "L415" qhia nws qhov tsawg kawg nkaus tawm lub zog, thiab "PSL1" txhais cov txheej txheem ntawm kev sim thiab kev tsim khoom uas nws ua tau raws.
Hom yeeb nkab no yog ib qho chaw ua haujlwm rau loj - txoj kab uas hla, siab - cov kav xa hluav taws xob siab, xws li cov khoom siv hla - lub teb chaws cov roj av lossis cov roj av.
2. Kev rhuav tshem cov Cheebtsam
L415 - Qib Qib
"L": Sawv rau"Line Pipe". Qhov no tam sim ntawd qhia koj tias nws yog npaj rau cov kav dej.
"415": Sawv cev rauYam tsawg kawg nkaus yield zog (SMYS)hauvMegapascals (MPa).
415 MPa rauyog sib npaug rau kwv yees li60,000 psi(phaus ib square inch).
Yield zogyog qhov kev ntxhov siab uas cov khoom pib deform plastically (piv txwv li, nws yuav tsis rov qab mus rau nws qhov qub qub thaum lub load raug tshem tawm). Qhov no yog ib qho cuab yeej tseem ceeb rau kev tiv thaiv sab hauv.
PSL1 - Khoom Specification Level
Qhov no yog lub ntsiab lus tseem ceeb los ntawm API 5L tus qauv. PSL txhais cov txheej txheem yuav tsum tau ua rau cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, kev sim, thiab tsis yog - kev tshuaj xyuas puas tsuaj.
PSL1 yog qib txheem.Nws muab cov kev cai hauv paus rau kab yeeb nkab.
Cov yam ntxwv zoo ntawm PSL1 Pipe:
Tshuaj muaj pes tsawg leeg:Ntau qhov dav rau cov ntsiab lus xws li Carbon, Manganese, Sulfur, thiab Phosphorus raug tso cai piv rau PSL2.
Mechanical Properties:Tsom ntsoov rau tensile thiab yield zog, thiab flattening xeem yuav tsum tau.
Kev kuaj:Feem ntau yuav tsum tau nruj me ntsis uas tsis yog -kev kuaj kev puas tsuaj (NDT) dua li PSL2.
Impact Testing: Charpy Impact toughness test feem ntau TSIS yuam kom PSL1, tshwj tsis yog tias tus neeg yuav khoom tau xaj tshwj xeeb rau qhov kev pabcuam qis - kub.
Carbon Steel
Qhov no qhia txog cov khoom siv hauv paus.
Nws yog ib qho alloy ntawm hlau thiab carbon, nrog cov pa roj carbon ua lub hauv paus ntxiv dag zog, nrog rau manganese.
Nws yuav muaj me me, tswj hwm ntawm lwm cov khoom xws li silicon, tab sis nws yogtsis yogib qho "qis-alloy" steel nrog ntau cov chromium, molybdenum, lossis npib tsib xee.
Nws yog lub npe hu rau nws lub zog zoo, formability, thiab weldability, ua rau nws zoo tagnrho rau kev tsim cov kav dej ntev.
3. Kev Tswj Xyuas Txheej Txheem: API 5L
Tag nrho cov ntsiab lus saum toj no tau txhais thiab tswj los ntawm tusLub koom haum American Petroleum Specification 5L (API 5L). Qhov no yog qhov ntsuas thoob ntiaj teb rau cov kab yeeb nkab, ua kom zoo, kev nyab xeeb, thiab kev sib hloov.
Thaum koj pom "L415 PSL1," nws yog API 5L tsim.
4. Sib piv: PSL1 vs. PSL2
Txhawm rau kom nkag siab zoo dua L415 PSL1, nws muaj txiaj ntsig los piv nws nrog PSL2 nruj dua.
| Feature | PSL1 (piv txwv li, L415 PSL1) | PSL2 (piv txwv li, L415M PSL2) |
|---|---|---|
| Tshuaj Tswj | Tsawg nruj; dav muaj pes tsawg leeg. | Kev tswj nruj dua; Maximum Carbon Equivalent (CE) los xyuas kom meej weldability. |
| Cov chav muaj zog | Qhia meej hauv MPa lossis psi (piv txwv li, L415). | Tshwj xeeb hauv MPa nkaus xwb (piv txwv li, L415M). |
| Kev ntsuam xyuas cuam tshuam | Tsis yuam(tshwj tsis yog hais tseg). | Yuav tsum taurau tag nrho cov kav dej. Xyuas kom toughness tiv thaiv puas. |
| NDT Test | Cov kev cai nruj tsawg. | 100% tsis yog-kev kuaj kev puas tsuaj (piv txwv li, ultrasonic lossis electromagnetic) ntawm vuam seam thiab lub cev yog qhov yuav tsum tau ua. |
| Traceability | Txheem theem. | Txhim kho traceability ntawm txhua qhov ntev ntawm cov yeeb nkab. |
Nyob rau hauv luv luv, PSL2 yeeb nkab yog ib tug siab dua - zoo, ntau txhim khu kev qha, thiab ntau dua kev soj ntsuam cov khoom, feem ntau yog siv nyob rau hauv ntau xav tau daim ntawv thov (xws li, offshore, arctic, los yog siab- pa roj kis tau tus mob).
5. Kev siv ntau yam ntawm L415 PSL1 Pipe
Onshore Gas Transmission Pipelines:Cov kab tseem ceeb rau kev thauj cov nkev roj mus ntev.
Onshore Crude Roj Pipelines:Thauj roj los ntawm teb mus rau refineries los yog terminals.
Dej Txhaj Kab:Nyob rau hauv cov roj teb rau theem nrab rov qab.
Khoom Pipelines:Rau cov khoom ua kom zoo zoo li diesel lossis roj av.
General Service Pipelines:Rau lwm cov kua dej uas muaj qhov siab tawv tsis yog qhov kev txhawj xeeb tseem ceeb.
Cov ntsiab lus
L415 PSL1 Carbon Steel Kab Yeebyog asiab -lub zog (60,000 psi tawm los), tus qauv - cov yeeb nkab zoomanufactured rau lubAPI 5Ltxheem. Nws yog tus nqi - siv tau zoo thiab dav siv tshuaj rau ntau lub ntug dej hiav txwv, siab - kev siv cov raj xa dej siab qhov twg tsis tshua muaj siab - qhov kub thiab txias tsis yog qhov yuav tsum tau ua. Yog tias daim ntawv thov hnyav dua (piv txwv li, offshore, huab cua txias), aPSL2Qib feem ntau yuav raug teev tseg.
