API 5L Qib B yeeb nkab tuab npaum li cas?
API 5L Gr.B seamless steel yeeb nkabyog ib yam khoom tseem ceeb uas siv dav hauvroj thiab roj kis tau tus mob systems. Nws muab qhov tshwj xeebmechanical zog, corrosion kuj, thiab kev ntseeg tau.
Khoom Specifications:
Sab nraud txoj kab uas hla:21.3mm ~ 762mm
Phab ntsa Thickness:2.0mm ~ 140 hli
API 5L Qib B Pipe Chemical Composition
|
PSL1 |
PSL2 |
|||||||
|---|---|---|---|---|---|---|---|---|
| Qib | C (Max.) | Mn (Max.) | P (Max.) | S (Max.) | C (Max.) | Mn (Max.) | P (Max.) | S (Max.) |
| B | 0.26 | 1.20 | 0.03 | 0.03 | 0.22 | 1.30 | 0.025 | 0.015 |
API 5L Qib B Kab Pipes Tolerance Specifications
| Tolerance ntawm qhov ntev | |||||
|---|---|---|---|---|---|
| OD Tolerance | WT kam rau ua | ||||
| A, B | X42 ~ X70 | ||||
| D<60.3mm | +0.41/-0.40mm | D<73mm | +20%/-12.5% | D<73mm | +15%/-12.5% |
| D>=60.3 hli | +0.75/-0.40mm | D>=73 hli | +15%/-12.5% | D>=73 hli | +15%/-12.5% |
API 5L Gr B yield zog
|
Qib Qib |
Tensile Properties - Qib B Yeeb Nkab Lub Cev ntawm SMLS thiab Welded Pipes PSL 1 |
Seam ntawm Welded Yeeb Nkab |
||
|---|---|---|---|---|
|
Yield zog a |
Tensile zog a |
Elongation |
Tensile zog b |
|
|
Qib B |
35,500 |
60,200 |
c |
60,200 |
Qhov txawv ntawm API 5L GRB thiab A53 GRB yeeb nkab yog dab tsi
| Cov khoom sib piv | API 5L Gr.B(Oil & Gas Pipeline) | ASTM A53 Gr.B(General Structure) |
|---|---|---|
| Kev tswj hwm tus qauv | API SPEC 5L (Kev Pabcuam hnyav) | ASTM A53 (Kev siv yooj yim) |
| Kev khiav hauj lwm Temp | -46℃~ 427 degree | -29℃~ 343 degree |
| Mechanical Properties | Tensile Ntau dua los yog sib npaug rau 414MPa, Yield Ntau dua lossis sib npaug rau 240MPa | Tensile Ntau dua los yog sib npaug rau 415MPa, Yield Ntau dua lossis sib npaug rau 240MPa |
| Corrosion Resistance | Kev Xeem H₂S (NACE MR0175) | Tsis Xav Tau Tshwj Xeeb |
| NDT Requirements | 100% UT + Eddy Tam sim no (PSL2) | Hydro Test Sampling (Tsis Muaj UT) |
| Tsawg-Temp Toughness | Ntau dua lossis sib npaug rau 27J ntawm -30℃(L245N) | Tsis xav tau |
| Hom yeeb nkab | Seamless / Welded | Seamless / Welded / Kauv Welded |
| Tej kev siv | ► Ntev - cov kav dej nyob deb ► Cov kua qaub sib sau ua ke |
► Cov qauv tsim ► Tsawg- dej siab / HVAC |
Kev kuaj thiab tshuaj xyuas
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