API 5L PSL1 vs PSL2: Qhov txawv yog dab tsi?
API 5L PSL1thiabPSL2yog ob yam khoom tshwj xeeb ntawm API kab yeeb nkab tus qauv, txhais cov khoom sib txawv thiab cov kev xeem yuav tsum tau ua - tsis yog qib khoom sib txawv. PSL1 muab cov kev cai dav dav dav dav; PSL2 ntxiv cov tshuaj muaj pes tsawg leeg nruj dua, tsis muaj qhov toughness thiab lub zog tswj cov cuab yeej rau siab dua - kev pabcuam kev ncaj ncees.
Qhov tseem ceeb sib txawv hauv kev tsim khoom thiab kev xa khoom
| Parameter | API 5L PSL1 | API 5L PSL2 |
|---|---|---|
| Qib ntau | A25-X70 | B to X80 |
| Qhov ntau thiab tsawg | 0.405 "mus rau 80" | 4.5 "mus rau 80" |
| Hom xaus | Plain, threaded, beveled, tshwj xeeb coupling | Plain kawg |
| Seam vuam | Txhua txoj kev; nruam vuam txwv rau A25 | Txhua txoj kev tshwj tsis yog txuas ntxiv thiab laser vuam |
| Hluav taws xob vuam zaus | Tsis muaj yam tsawg kawg nkaus | 100 kHz yam tsawg kawg nkaus |
| Kev kho cua sov ntawm hluav taws xob welds | Yuav tsum tau rau qib siab dua X42 | Yuav tsum muaj rau txhua qib |
Kev soj ntsuam thiab kuaj qhov sib txawv
PSL1:
tsis muaj qhov yuav tsum tau kuaj xyuas lossis NDT; Basic chemical thiab mechanical verification plus hydrostatic testing.
PSL2:
yuav tsum Charpy impact testing - rau txhua qib tshwj tsis yog X80, qhov nruab nrab puv - loj zog ntawm 41 J longitudinal thiab 27 J transverse; X80 xav tau 101 J longitudinal thiab 68 J transverse. 100% NDT yog siv.
Yuav xaiv li cas
XaivPSL1
rau tus qauv onshore sib sau ua ke, kev faib tawm thiab kev pabcuam kev siv hluav taws xob uas tus nqi ua haujlwm tseem ceeb. XaivPSL2rau siab - siab roj mains, qaub kev pab cuam, offshore kab thiab txhua daim ntawv thov qhov twg puas tawg thiab tag nrho traceability yuav tsum tau.
Cov lus nug nquag
Puas yog PSL2 qib siab dua PSL1?
Tsis yog. PSL txhais cov qib zoo thiab kev xeem; qib (piv txwv li, X52) txhais lub zog. PSL1 X52 thiab PSL2 X52 muaj qhov tsawg kawg nkaus tawm los.
PSL2 puas yuav tsum tau kuaj qhov cuam tshuam?
Yog lawm, yuav tsum Charpy V- ntsuas qhov ntsuas kub ntawm qhov ntsuas kub rau txhua qib PSL2.
PSL1 yeeb nkab puas tuaj yeem hloov kho rau PSL2?
Tsis yog retroactively - PSL2 qhov yuav tsum tau (chemistry, kho cua sov, NDT) yuav tsum tau tsim rau hauv kev tsim khoom thiab tshawb xyuas ntawm lub zeb.
PSL twg yog siv rau cov kav dej sab nraud?
PSL2, vim tias pob txha tawv thiab tag nrho NDT yog qhov tseem ceeb rau kev nyab xeeb hauv dej hiav txwv.
Puas yog cov kav dej PSL2 kim dua?
Feem ntau yog, vim yog nruj dua chemistry, yuav tsum tau kuaj thiab txhim kho kev soj ntsuam cov cai.
Dab tsi cuam tshuam lub zog PSL2 xav tau?
Rau txhua qib tshwj tsis yog X80, PSL2 yuav tsum muaj qhov nruab nrab puv - loj Charpy zog ntawm 41 J longitudinal thiab 27 J transverse; X80 xav tau 101 J longitudinal thiab 68 J transverse.
