API 5L GR.B PSL1 / PSL2 siab -ntau zaus longitudinal welded kavua raws li nrujAPI Specification 5L. Ntawm no,PSL1 thiab PSL2 qhia txog qib zoo, nrog PSL2 sawv cevelevated zoo thiab kev ua tau zoo benchmarks.
CovERW (Electric Resistance Vuam)txheej txheem muab:
Siab qhov tseeb
Superior weld kev ncaj ncees
Siab -ntau zaus longitudinal vuam kom paub meejuniform, ntom seams, txhim kho tag nrho cov yeeb nkab lub zog thiab kev ntseeg tau.
Txheem qhov ntev:
OD ntau: 21.3-762 mm
Phab ntsa thickness: 2.0-140 mm
Lub rooj sib tham sib txawv engineering xav tau thoob plaws ntau qhov xwm txheej.
Tshuaj muaj pes tsawg leeg ntawm API 5L Qib B PSL1 PSL2 yeeb nkab
|
Tshuaj muaj pes tsawg leeg% |
||||||||
|
PSL1 |
PSL2 |
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|
Qib |
C (Max.) |
Mn (Max.) |
P (Max.) |
S (Max.) |
C (Max.) |
Mn (Max.) |
P (Max.) |
S (Max.) |
|
A |
0.22 |
0.90 |
0.03 |
0.03 |
0.22 |
1.20 |
0.025 |
0.015 |
|
B |
0.26 |
1.20 |
0.03 |
0.03 |
0.22 |
1.30 |
0.025 |
0.015 |
Mechanical Properties ntawm API 5L Qib B Seamless Yeeb Nkab
| Mechanical Properties PSL 1 | |||||
|---|---|---|---|---|---|
| Qib | Yield zog (Min.) | Tensile zog (Min.) | Elongation | ||
| Ksi | MPa | Ksi | MPa | E=1944 A 0.2 /U 0.9 | |
| B | 35 | 241 | 60 | 414 | |
| Mechanical Properties PSL 2 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Qib | Yield zog | Tensile zog | Elongation | ||||||
| Min | Max | Min | Max | E=1944 A 0.2 / U 0.9 | |||||
| Ksi | MPa | Ksi | MPa | Ksi | MPa | Ksi | MPa | ||
| B | 35 | 241 | 65 | 448 | 60 | 414 | 110 | 758 | |
PSL-1 vs PSL-2 Qhov Tseem Ceeb Qhov txawv
| Parameter | PSL-1 | PSL-2 |
|---|---|---|
| Kev Xav Tau | Basic chemical / mechanical zog | Kev tswj nruj dua(piv txwv li, CE Tsawg dua lossis sib npaug rau 0.43%, [S] Tsawg dua lossis sib npaug rau 0.015%) |
| Kuaj Scope | Tensile / Chemistry / Dimensional checks | Tag nrho cov kev xeem PSL-1 + yuav tsum tau: • Charpy cuam tshuam • DWTT • Hardness daim ntawv qhia |
| Performance Tier | Cov xwm txheej txheem (tsis yog-corrosive, siab nruab nrab) | Xav tau ib puag ncig: • Kev pabcuam Cryogenic (-20 degree) • High-siab gas • Qab Zib Media (H₂S) |
| Daim ntawv thov | Tus nqi - cov haujlwm tseem ceeb | Tseem ceeb infrastructure: • Sib sib zog nqus- hiav txwv rho tawm • Arctic pipelines • Siab- thaj tsam corrosion |
| Tus nqi cuam tshuam | Lower (simplified ntau lawm) | Siab dua(Cov nqi kho mob QA / NDT) |
API 5L GRB PSL1 PSL2 kab yeeb nkab Hoobkas
