API 5L PSL1 steel kab yeeb nkab yog muaj nyob rau hauv ntau hom xaus xws li dawb kawg, threaded kawg, beveled thiab tshwj xeeb sib koom yeeb nkab, thaum API 5L PSL2 steel kab yeeb nkab tsuas muaj qhov kawg.
API 5L PSL1 steel yeeb nkab tuaj yeem tsim tau siv ntau txoj kev vuam. Tab sis tsis tu ncua welding yog txwv rau qib A25.
Muaj qhov sib txawv loj ntawm API 5L pipelines PSL1 thiab PSL2. Qhov sib txawv ntawm ob yog raws li nram no:
PSL1 muab cov kav dej dav dav hlau yeeb nkab zoo raws li qhov yuav tsum tau ua; PSL2 suav nrog cov tshuaj lom neeg muaj pes tsawg leeg nce siab thiab lub zog muaj zog.
Kev tshuaj ntsuam xyuas. PSL1 tsis tas yuav muaj kev cuam tshuam kev ua tau zoo thiab tsis muaj kev puas tsuaj; PSL2 rau tag nrho cov qib steel tshwj tsis yog x80, qhov nruab nrab puv loj 0Akv: 41J nyob rau hauv qhov kev taw qhia ntev thiab 27J nyob rau hauv txoj kev transverse. X80 steel qib, tag nrho qhov loj me 0Akv nruab nrab: longitudinal 101J, transverse 68J, yuav tsum tau soj ntsuam ib qho los ntawm ib qho tsis muaj kev puas tsuaj.
Qhov sib txawv ntawm API 5L PSL1 kav thiab API 5L PSL2 kav-tsim
| PARAMETER | API 5L PSL1 | API 5L PSL2 |
|---|---|---|
| Qib Qib | A25-X70 | B to X80 |
| Qhov ntau thiab tsawg | 0.405″ txog 80″ | 4.5 "mus rau 80" |
| Hom xaus | Plain kawg, xov kawg, bevel kawg tshwj xeeb coupling kav | Plain kawg |
| Seam vuam | Txhua txoj hauv kev: txuas txuas txuas txuas rau A25 | Txhua txoj hauv kev: tsuas yog txuas txuas txuas ntxiv thiab laser vuam |
| Electric welds: welder zaus | Tsis muaj yam tsawg kawg nkaus | kHz yam tsawg kawg nkaus 100 |
| Kev kho cua sov ntawm hluav taws xob welds | Required for grades >X42 | Yuav tsum muaj rau txhua qib (B txog X80) |
