API 5L X65QS Seamless Steel Yeeb Nkab
API 5L X65QS seamless steel yeeb nkab yog lub siab -lub zog, qaub- pabcuam-cov kav dej tsis muaj zog tsim los rau sab nrauv thiab H₂S- muaj ib puag ncig, qhov twg "QS" cov lus sau qhia txog kev tsim nyog rau kev tiv thaiv sulfide kev ntxhov siab tawg (SSC), ua rau nws tsim nyog rau cov kab mob hnyav hauv cov roj thiab cov pa xa mus.
API 5L X65QS Seamless Steel Pipe Specifications
| Yam khoom | Parameter |
|---|---|
| Txuj | API SPEC 5L (45th Edition), PSL2 |
| Qib | x65 qw |
| Hom yeeb nkab | Seamless (SMLS) |
| Khoom Specification Level | PSL2 (kev tswj kom zoo) |
| Daim ntawv thov | Offshore platforms, cov kav dej hauv qab hiav txwv, thaj av qaub av, siab - cov kab sib kis |
| Kev kho cua sov | Normalized los yog quenched & Tempered |
| Kev tsim khoom | Kub- dov / Txias- rub / Kub- nthuav dav, nrog TMCP + kev kho cua sov |
API 5L X65QS roj thiab roj pipelines Chemical Composition (Cov Nqi Zoo, PSL2 Requirements)
| Element | Cov ntsiab lus (%) | Lub hom phiaj |
|---|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.16 | Minimizes weld cracking txaus ntshai |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 1.65 | Txhim khu lub zog thiab qis -kub toughness |
| Phosphorus (P) | Tsawg dua los yog sib npaug rau 0.020 | Txo brittleness, txhim kho purity |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.003 | Kev tswj nruj nruj kom tsis txhob kub luv |
| Vanadium (V) | Tsawg dua lossis sib npaug li 0.09 | Grain refinement, txhim kho lub zog |
| Niobium (Nb) | Tsawg dua los yog sib npaug li 0.05 | Txhim kho toughness thiab weldability |
| Titanium (Ti) | Tsawg dua los yog sib npaug li 0.06 | Stabilizes nitrogen, tswj microstructure |
API 5L X65QS Roj thiab roj kis yeeb nkab Mechanical Properties (PSL2 Requirements)
| Khoom | Kev xav tau |
|---|---|
| Yam tsawg kawg nkaus Yield Strength (YS) | Ntau dua lossis sib npaug li 450 MPa(65,000 psi) |
| Tensile zog (TS) | 535-760 MPa |
| Yield-rau-Tensile Ratio (YS/TS) | Tsawg dua lossis sib npaug li 0.93 |
| Elongation (A) | Ntau dua lossis sib npaug li 18% (transverse specimen) |
| Charpy V-Txoj kev cuam tshuam lub zog ntawm 0 degree | Ntau dua lossis sib npaug rau 40 J (nruab nrab), ib tus nqi Ntau dua lossis sib npaug rau 34 J |
| DWTT Shear Area | Ntau dua los yog sib npaug li 75% (muaj feem xyuam rau tuab- phab ntsa lossis qis- cov kav dej kub) |
API 5L X65QS seamless steel kab yeeb nkab Dimension Standards (API 5L PSL2)
| Parameter | Ntau yam |
|---|---|
| Sab nraud Diameter (OD) | 21.3 hli - 1026 hli |
| Phab ntsa Thickness (WT) | 2.0mm-120 hli |
| Ntev | Tsau (piv txwv li, 5.8m, 6m, 11.6m, 12m) lossis random |
| Bevel Lub kaum sab xis | 30℃-35 degree |
| Hauv paus ntsej muag | 1.6 hli ± 0.8 hli |
API 5L X65QS Kab Pipes rau roj & roj phab ntsa Thickness, Ncaj, thiab Ntev Tolerances (Offshore / Subsea Application)
| Yam khoom | Ua siab ntev |
|---|---|
| Phab ntsa Thickness kam rau ua | +12.5% / -10% (PSL2) |
| Sab nraud txoj kab uas hla | ±1% (≤406.4mm), ±0.5% (>406.4 hli) |
| Kev ncaj | Tsawg dua lossis sib npaug li 0.2% ntawm cov yeeb nkab ntev |
| Ntev Ntev | +100 mm / -0 mm (ntev ntev) |
| Ovality | Tsawg dua lossis sib npaug li 0.6% ntawm nominal OD |
API 5L X65QS Carbon Steel Line Pipe Inspection Requirements
| Hom tshuaj ntsuam xyuas | Cov ntsiab lus |
|---|---|
| Tshuaj ntsuam xyuas | Kev ntsuas kub thiab ntsuas cov khoom lag luam kom paub tseeb tias kev ua raws cai |
| Mechanical Testing | Tensile, cuam tshuam, DWTT, hardness kuaj |
| Tsis yog -Kev Ntsuas Kev Puas Tsuaj (NDT) | 100% Ultrasonic Testing (UT) + 100% Radiographic Testing (RT) |
| Hydrostatic Test | Txhua cov yeeb nkab tau kuaj ib tus zuj zus, ntsuas siab Ntau dua lossis sib npaug rau 1.5 × tsim siab |
| HIC Test | Ua nyob rau hauv simulated H₂S ib puag ncig ntawm NACE TM0284 |
| SSCC Test | Raws li NACE TM0177 tus qauv rau kev pabcuam qaub |
| Dimensional & Visual Inspection | OD, WT, ncaj, bevel zoo, defects |
| Marking & Traceability | Txhua cov yeeb nkab cim nrog qib, qhov loj, tus naj npawb cua sov, tus qauv; tag nrho traceability ntawm MTC |
API 5L Roj yeeb nkab Test thiab tshuaj xyuas
API 5L seamless carbon steel kab yeeb nkab Hoobkas
FAQ
Cov khoom siv qib X65 yog dab tsi?
X65 yog qib siab - qib pipeline steel hauv API 5L tus qauv, nrog tus lej "65" sawv cev rau nws qhov kev tawm dag zog yam tsawg kawg nkaus ntawm 65 ksi (kwv yees li 448 MPa), uas yog qhov ntsuas tseem ceeb rau kev ntsuas nws cov kabmob muaj peev xwm.
Nyob rau hauv X65QS seamless steel yeeb nkab, X65 sawv cev rau theem pib ntawm kev ua tau zoo, kom ntseeg tau tias cov yeeb nkab steel muaj lub zog txaus thiab kev ruaj ntseg nyob rau hauv siab - siab thiab ntev - deb ntawm cov roj thiab roj tsheb thauj mus los, thiab yog dav siv nyob rau hauv onshore thiab offshore zog pipeline systems.
API 5L X65 sib npaug li cas?
Hauv cov qauv thoob ntiaj teb, API 5L X65 feem ntau tuaj yeem siv los ntsuas cov ntaub ntawv hauv qab no:
GB/T 9711L450(Suav tus qauv, L sawv cev rau lub zog tawm los hauv MPa)
Daim ntawv pov thawj ISO 3183 L450
TS EN 10208-2 L450
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