API 5L X52 PSL2 Roj Kis Kab Yeeb
API 5L X52 PSL2 HFW/ERWyog ib lub siab -lub zog welded steel yeeb nkab tshwj xeeb engineered rau nruab nrab - mus rau - siab siab roj thiab roj kis tau tus mob, featuring ib tug tsawg kawg nkaus yield zog ntawm52,000 psi (360 MPa)thiab lub zog tensile xws li460 txog 760 MPa. Tsim los ntawm High-Vuam zaus (HFW) txheej txheem raws li kev nrujPSL2tus qauv zoo, nws tswj cov tshuaj tsis muaj tshuaj lom neeg tsawg (S Tsawg dua lossis sib npaug0.015%, PTsawg dua los yog sib npaug0.025%) thiab nruj carbon sib npaug txwv (CEiiwTsawg dua los yog sib npaug0.43) los xyuas kom meej qhov zoo tshaj plaws weldability.
Tsis tas li ntawd, nws yuav tsum dhau qhov yuav tsum tau ua Charpy V- ntsuas qhov cuam tshuam rau qhov ntsuas - feem ntau xav tau lub zog nruab nrab ntawmNtau dua lossis sib npaug27j0 qib- txhawm rau tiv thaiv kev tawg tawg hauv qhov xav tau ib puag ncig. Nrog rau qhov zoo me me (xws li OD kam rau ua ntawm ± 0.75%) thiab 100% kev tshuaj xyuas los ntawm hydrostatic thiab ultrasonic tsis-kev kuaj kev puas tsuaj, cov yeeb nkab no yog cov kev daws teeb meem tseem ceeb rau cov khoom siv hluav taws xob niaj hnub, zoo ntsuas qhov muaj peev xwm siab, qis -kub toughness, thiab nqi-efficiency.
API 5L X52 PSL2 HFW/ERW yeeb nkabSpecification Table
| Yam khoom | Paub meej |
| Txuj | API Spec 5L (ISO 3183) |
| Qib | X52 (los yog L360) |
| Qib khoom | PSL2 |
| Ua raws li | IPS -M-PI-190(4), NACE MR0175, ISO15156 |
| Kev tsim khoom | HFW (High-Frequency Weld) / ERW (Electric Resistance Weld) |
| Sab nraud Diameter (OD) | 2-3 / 8 "mus rau 24" (Common range for ERW) |
| Phab ntsa Thickness (WT) | SCH 10 txog SCH 80 (feem ntau txog 12.7mm - 19.1mm) |
| Ntev | SRL (6m), DRL (12m), lossis Custom Lengths |
| Kev npaj kawg | Beveled Ends, Ob Chav Random Length (~ 12 m), Xaus Caps |
| Kev Xa Khoom | M (Thermo-mechanically dov) los yog N (Normalized) |
API 5L X52 PSL2 HFW / ERW kab yeeb nkabChemical Composition & Mechanical Requirements (PSL2)
Chemical Composition (Mass feem %)
Rau PSL2, qhov kev txwv siab tshaj plaws yog nruj dua los txhim kho weldability thiab toughness.
| Qib | C (max) | Si (max) | Mn (max) | P (max) | S (max) | V/Nb/Ti (max) | CEiiw (max) |
| X52 PSL 2 | 0.16% | 0.45% | 1.40% | 0.025% | 0.015% | Qhia rau mfr | 0.43 |
Nco tseg: Carbon Equivalent (CE) yog qhov yuav tsum tau ua rau PSL2 los xyuas kom meej qhov chaw weldability.
Mechanical Requirements
| Qib | Yield zog Rt0.5 (MPa) | Tensile zog Rm(MPa) | Yield ratio (max) | Elongation |
| X52 PSL 2 | 360 - 510 | 460 - 760 | 0.93 | Rau API Formula |
API 5L X52 PSL2 HFW/ERW yeeb nkabQhov ntau thiab tsawg
| Parameter | Kev kam rau siab (PSL2) |
| Sab nraud txoj kab uas hla (OD) | Lub cev lub cev: ± 0.5%; Cov yeeb nkab kawg: ± 0.005D (max ± 1.6mm) |
| Phab ntsa Thickness (WT) |
+15%/−12.5%(raut Tsawg dua los yog sib npaug li 5 hli); +17.5%/−10% (raut Ntau dua lossis sib npaug li 15mm) |
| Tawm ntawm - ntawm - Roundness | Cov yeeb nkab kawg: 0.015D (max 15mm) |
| Kev ncaj |
Tsawg dua lossis sib npaug li 0.2%ntawm tag nrho qhov ntev |
| Qhov hnyav |
+10.0%/−3.5% |
API 5L X52 PSL2 HFW / ERW Roj yeeb nkabNto tiav
Txhawm rau tiv thaiv corrosion thaum lub sij hawm thauj mus los thiab kev ua haujlwm, ntau qhov tiav muaj:
Liab qab:Tsis muaj txheej, feem ntau oiled rau kev tiv thaiv xeb ib ntus.
Dub Vanish / Painting:Txheem zeb txheej rau atmospheric xeb tiv thaiv.
FBE (Fusion Bonded Epoxy):Ib txheej los yog ob txheej rau zoo heev underground corrosion kuj.
3LPE (3-Layer Polyethylene):Cov txheej txheem ntau tshaj plaws rau faus roj / roj kis.
3LPP (3-txheej Polypropylene):Siv rau kev ua haujlwm siab dua.
Sab hauv:Epoxy kua hauv ob sab phlu kom txo tau kev sib txhuam thiab txhim kho ntws (Flow coat).
API 5L X52 PSL2 HFW/ERW HIC PipelineKev sim
API 5L PSL2 xav tau kev sim nruj kom ntseeg tau qhov kev ncaj ncees ntawm HFW / ERW seam thiab lub cev yeeb nkab:
Hydrostatic Test:Txhua cov yeeb nkab yuav tsum tau sim ntawm lub siab uas ua rau muaj kev ntxhov siab tsawg kawg 90% ntawm lub zog tawm los. Tsis tso cai tawm.
Flattening Test:Rau ERW / HFW cov kav dej, ib qho qauv yog flattened los xyuas cov kab nrib pleb hauv cov vuam seam thiab cov hlau.
Kev kuaj ultrasonic (UT):100% tag nrho -ntev soj ntsuam ntawm weld seam.
Tensile & Guided Khoov Tests:Tshawb xyuas lub zog thiab ductility.
CVN Impact Test:Txheeb xyuas qhov toughness (PSL2 nkaus xwb).
DWT (Drop Weight Tear Test):Rau cov kav dej ntau dua lossis sib npaug rau OD 20 "kom ntseeg tau tias cov khoom tawg.
GNEE API 5L X52 PSL2 Roj Kis Kab Yeeb Nkab Hoobkas
GNEE API 5L X52 PSL2 Pipeline test equipments
GNEE API 5L X52 PSL2 roj thiab roj pipelines daim ntawv pov thawj
FAQ
PSL2 txhais li cas ntawm cov yeeb nkab?
PSL2sawv rauKhoom Specification Qib 2. Nws yog tus qauv zoo dua thiab nruj dua rau API 5L kab kav.
Hauv cov ntsiab lus yooj yim, PSL2 cim txhais tau tias cov yeeb nkab muaj:
Yuav tsum toughness:Nws tau dhau qhov kev sim cuam tshuam (Charpy V-notch) kom ntseeg tau tias nws yuav tsis tawg nyob rau hauv qhov kub siab lossis txias txias.
Stricter Chemistry:Nws muaj kev txwv qis ntawm impurities (xws li Sulfur thiab Phosphorus) kom zoo dua weldability thiab lub zog.
Txhim kho kev sim:Nws tau dhau los ua kev soj ntsuam nruj dua thiab muaj tag nrho traceability los ntawm steel zeb rau cov khoom kawg.
Qhov txawv ntawm API 5L yeeb nkab PSL1 thiab PSL2 yog dab tsi?
Qhov txawv tseem ceeb yog qhov ntawdPSL2yog tus qauv zoo dua nrog ntau cov kev cai nruj dua liPSL1.
Nov yog plaub qhov sib txawv tseem ceeb:
Impact Test (Toughness):Yuav tsum tau rauPSL2(kom ntseeg tau tias cov yeeb nkab yuav tsis tawg hauv qhov txias lossis siab - cov xwm txheej siab), tab sis tsis tas yuav tsum tau rau PSL1.
Tshuaj muaj pes tsawg leeg: PSL2muaj kev txwv nruj dua ntawm carbon, phosphorus, thiab sulfur cov ntsiab lus. Nws tseem ua haujlwm siab tshaj plawsCarbon sib npaug (CE)los xyuas kom meej weldability zoo dua.
Mechanical Strength: PSL2qhia asiab kawgyield zog thiab qhov siab tshaj tawm los ntawm -rau -tensile ratio, whereas PSL1 tsuas yog qhia qhov tsawg kawg nkaus. Qhov no ua rau PSL2 xav tau ntau dua nyob rau hauv kev ntxhov siab.
Traceability: PSL2cov kav dej yuav tsum tau 100% traceability (los ntawm raw cov hlau kub mus rau cov khoom kawg) thiab nruj dua tsis yog -kev kuaj kev puas tsuaj (NDT), thaum PSL1 tsuas yog yuav tsum tau yooj yim traceability.
API 5L qib X52 sib npaug li cas?
API 5L Qib X52 feem ntau sib npaug rauTS EN ISO 3183 L360qib steel.
Cov kev sib npaug hauv cheeb tsam tseem ceeb suav nrog:
ISO 3183:L360 (raws li 360 MPa yield zog)
GB/T 9711:L360 (Suav tus qauv)
Qauv TSIS MUAJ: DIN 17172STE 360.7 (German tus qauv)
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