CovAPI 5L GRBTus qauv, tsim los ntawm American Petroleum Institute (API), qhia txog cov kev cai rau cov kav dej steel siv hauv kev thauj roj thiab roj. Nyob rau hauv tus txheej txheem no,PSL1 thiab PSL2sawv cev rau ob qhov sib txawvProduct Specification Levels- tsis yog cov khoom siv qib - txhais cov txheej txheem tswj kev tswj hwm zoo.
Standard Requirements
PSL2 imposescov txheej txheem nruj duatshaj PSL1, npog cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab cov txheej txheem tsim khoom.
Tswjhwm ntau lawm
PSL2 cov kav dej tau txaistxhim khu kev soj ntsuam zoothiab kev sim thaum lub sijhawm tsim khoom, kom ntseeg tau tias kev ua haujlwm zoo ib yam. Qhov no suav nrog kev ua kom nruj dua qhov ntev, txhim kho qhov zoo, thiab nrujtsis yog -kev kuaj kev puas tsuaj (NDT).
Kev Tshawb Fawb & Kev Xeem
PSL2 xav tauntau dua ua ntej - ntawv pov thawj khoom xa tuaj, suav nrog kev sim hydrostatic thiab tag nrho -NDT lub cev (piv txwv li, kuaj ultrasonic/radiographic), los lav cov khoom zoo tshaj plaws.
API 5L gr B PSL1 thiab PSL2 carbon steel yeeb nkab yield zog
| API 5L gr B | PSL1 (psi) | PSL2 (psi) |
|---|---|---|
| Max Yield Strength: | Tsis muaj | 65000 |
| Min Yield Strength: | 35000 | 35000 |
| Max Tensile zog: | Tsis muaj | 110000 |
| Min Tensile zog: | 60000 | 60000 |
API 5L qib B PSL1 thiab PSL2 Kab yeeb nkab tshuaj muaj pes tsawg leeg
| Qib | PSL1 | PSL2 | ||||||
|---|---|---|---|---|---|---|---|---|
| Mn | C | S | P | Mn | C | S | P | |
| B | 1.2 | 0.26 | 0.03 | 0.03 | 1.3 | 0.22 | 0.015 | 0.025 |
API 5L Qib B Psl1 Vs Psl2
| Kev piav qhia | API 5L Qib B PSL1 | API 5L Qib B PSL2 |
|---|---|---|
| Qib Specification | Khoom Specification Qib 1 | Khoom Specification Qib 2 |
| Vuam Requirements | Basic | Xav paub ntxiv |
| Kev xeem yuav tsum tau | Basic | Xav tau ntau dua |
| Tshuaj muaj pes tsawg leeg | Txuj | Kev tswj nruj dua |
| NDT Test | Tsis xav tau | Yuav tsum tau |
| Mechanical Properties | Yam tsawg kawg nkaus | Siab dua |
| Charpy Impact Test | Tsis xav tau | Yuav tsum tau |
Kev kuaj thiab tshuaj xyuas
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