Nyob rau hauv cov ntsiab lus ntawm lubAPI 5Lspecification (tus qauv rau kab yeeb nkab siv hauv roj, roj, thiab kev thauj mus los hauv dej), thawj qhov sib txawv ntawmQib AthiabQib Bdag hauv lawvmechanical zogthiabtshuaj muaj pes tsawg leeg.
Qib Byog qib "workhorse" feem ntau hauv kev lag luam, whereasQib Ayog qis dua - qib zog siv tsawg dua nyob rau niaj hnub high - cov kav dej siab.
Kev nyuaj siab los txiav txim siab seb API 5L Qib A lossis Qib B yog qhov zoo dua rau koj qhov project? Hesitate tsis tau lawm!Cia koj cov ntaub ntawv tiv tauj, thiab peb cov kws tshaj lij yuav teb tag nrho koj cov lus nug, muab kev txhawb nqa thoob plaws hauv koj qhov kev txiav txim yuav khoom- ua cov txheej txheem.
Mechanical Properties (Qhov txawv tseem ceeb)
Qib B muaj cov txiaj ntsig siab dua thiab lub zog tensile xav tau tshaj li Qib A. Qhov no txhais tau tias Qib B tuaj yeem tiv taus siab dua sab hauv rau tib lub phab ntsa tuab.
| Khoom | Qib A (PSL1) | Qib B (PSL1) |
| Yield zog (min) | 30,000 psi (210 MPa) | 35,500 psi (245 MPa) |
| Tensile zog (min) | 48,600 psi (335 MPa) | 60,200 psi (415 MPa) |
Yield zog:Qhov taw tes uas cov hlau pib deform mus tas li.
Tensile zog:Qhov siab tshaj plaws ntawm cov hlau tuaj yeem tiv taus ua ntej tawg.
Tshuaj muaj pes tsawg leeg
Yuav kom ua tiav lub zog siab dua, Qib B muaj me ntsis carbon thiab manganese ntau dua li Qib A.
(Ceeb Toom: Cov feem pua ntawm no yog rau PSL1 yeeb nkab; PSL2 yeeb nkab muaj kev txwv nruj dua.)
| Element (Max%) | Qib A | Qib B |
| Cov pa roj carbon (C) | 0.22% | 0.26%(Welded) / 0.28% (Smls) |
| Manganese (Mn) | 0.90% | 1.20% |
| Phosphorus (P) | 0.030% | 0.030% |
| Sulfur (S) | 0.030% | 0.030% |
Cov pa roj carbon:Nce hardness thiab lub zog tab sis tuaj yeem txo qhov weldability thiab ductility yog tias siab dhau.
Manganese:Ua raws li deoxidizer thiab ua kom lub zog thiab tawv.
Weldability thiab Formability
Qib A:Vim nws muaj cov ntsiab lus qis dua, nws yog me ntsis ductile thiab yooj yim rau txias - khoov. Nws yog qhov yooj yim heev rau weld.
Qib B:Tseem suav hais tias yog qhov zoo tshaj plaws weldable thiab yog tus qauv kev lag luam rau kev vuam hauv cov kav dej. Txawm li cas los xij, vim tias nws muaj zog dua / nyuaj, nws yuav tsum tau ua tib zoo saib me ntsis rau cov txheej txheem vuam piv rau qib A softer.
Daim ntawv thov
Qib A:Siv nyob rau hauv qis - cov ntawv thov siab, kev txhawb nqa cov qauv, lossis cov tshuab thauj dej qub. Nws tsis tshua muaj teev rau niaj hnub siab -siab hydrocarbon (roj/gas) kis tau tus mob.
Qib B:Cov qauv kev xaiv rau cov roj thiab cov kav dej. Nws muaj lub zog zoo dua - rau - qhov hnyav piv, tso cai rau cov kws tsim khoom siv cov kav dej nyias nyias- cov kav dej kom ua tau raws li qhov ntsuas siab zoo li cov kav qib A tuab dua, uas txuag nqi thiab qhov hnyav.
PSL1 vs. PSL2 Cov ntsiab lus
Thaum tham txog qib API 5L, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoovKhoom Specification Level (PSL):
PSL1:Tus qauv zoo rau kab yeeb nkab.
PSL2:Qib siab dua nrog qhov yuav tsum tau ua rau pob txha tawv nqaij (Charpy V-kev ntsuas qhov ntsuas), kev txwv tshuaj lom neeg nruj dua, thiab cov ntaub ntawv taug qab. Qib B feem ntau raug txiav txim raws li PSL2 (Qib BN lossis BQ), thaum Qib A yuav luag tsuas yog pom hauv PSL1.
Kev sib piv hauv Phau Ntawv Qhia Kev Xaiv
| Yam khoom | API 5L GRA | API 5L GRB |
|---|---|---|
| Yam tsawg kawg nkaus Yield Strength | 207 MPa rau | 245 MPa rau |
| Tensile zog | Ntau dua lossis sib npaug li 310 MPa | Ntau dua los yog sib npaug415 MPa rau |
| Weldability | Zoo | Zoo heev(tsawg carbon sib npaug) |
| Daim ntawv thov Scenario | Tsawg-siab, me - txoj kab uas hla | Onshore mainlines, sib sau ua ke, cov pa roj hauv nroog |
| Nqi Efficiency | Tsawg | Siab(tus nqi zoo tshaj -kev ua tau zoo piv) |
| Kev siv tam sim no | Tsis tshua muaj | Siv dav |
API 5L kab yeeb nkab test equipments
API 5L roj thiab roj pipeline Hoobkas
API 5L Tube daim ntawv pov thawj
FAQ
API 5L Qib B siv rau dab tsi?
API 5L Qib B yog siv dav hauv kev xa cov roj thiab roj, suav nrog ntev - cov kav dej nyob deb, cov chaw sib sau ua ke, thiab cov chaw nres tsheb hauv nroog. Nws kuj tseem ua haujlwm hauv tshuaj lom neeg, hluav taws xob, thiab kev tsim kho rau kev thauj cov kua dej thiab kev txhawb nqa, uas muaj nuj nqis rau nws lub zog txhim khu kev qha, weldability, thiab tus nqi- ua tau zoo.
Cov qib sib txawv ntawm API 5L yog dab tsi?
API 5L qib suav nrog qib theem pib xws li A, B, thiab siab - zog X-series (X42, X46, X52, X56, X60, X65, X70, X80, mus txog X120). Tus lej tom qab "X" qhia qhov tsawg kawg nkaus tawm lub zog hauv ksi, nrog PSL1 rau kev siv dav dav thiab nruj PSL2 rau kev thov kev thov.
