Qib L485 X70 Kauv Welded Pipe
Qib L485 X70 Kauv Welded Pipeyog lub siab -lub zog steel kab yeeb nkab uas tsim los siv covSSAW (kauv submerged Arc Vuam)txheej txheem.
L485 / X70:Cov ntsiab lus no hais txog qhov tsawg kawg nkaus tawm lub zog ntawm cov hlau.L485yog tus metric xaiv (485 MPa), thaumX70yog lub npe imperial (70,000 psi).
SSAW txheej txheem:Tsis zoo li ncaj nraim -cov kav dej seam, cov no yog tsim los ntawm winding kub -rolled steel coil rau hauv ib lub voj voog thiab vuam cov seams. Qhov no tso cai rau kev tsim khoom ntawmtxoj kab uas hla loj heev(txog 120 ntiv tes) los ntawm cov hlau nqaim nqaim, ua rau tus nqi - siv tau zoo rau cov phiaj xwm loj.
API 5L Qib X70 Pipe Specifications
| Yam khoom | Paub meej |
| Txuj | API Spec 5L (ISO 3183) |
| Qib | X70 / L485 (Muaj nyob rau hauv PSL1 thiab PSL2) |
| Hom kev tsim khoom | SSAW (kauv submerged Arc Welded) |
| Sab nraud Diameter (OD) | 219.1 hli - 3048 hli (8 "- 120") |
| Phab ntsa Thickness (WT) | 6.0mm-25.4 hli |
| Ntev | 6m - 12m, 18m, 22m (Supports ntxiv -ntev ntev ntev) |
| Txheej txheej xaiv | 3PE, FBE, Internal Epoxy, Bitumen, Galvanized |
API 5L X70 PSL1 thiab PSL2 Chemical Composition (Max %)
| Element | PSL1 (welded) | PSL2 (welded) |
| Cov pa roj carbon (C) | 0.26 | 0.17 |
| Manganese (Mn) | 1.65 | 1.70 |
| Phosphorus (P) | 0.030 | 0.025 |
| Sulfur (S) | 0.030 | 0.015 |
| Carbon sib npaug (CEiiw) | N/A | 0.43 |
Mechanical Properties ntawm API 5L X70 Pipe
| Khoom | PSL1 | PSL2 |
| Yield zog (Min) | 485 MPa (70,300 psi) | 485 MPa (70,300 psi) |
| Yield zog (Max) | Tsis muaj | 635 MPa (92,100 psi) |
| Tensile zog (Min) | 570 MPa (82,700 psi) | 570 MPa (82,700 psi) |
| Tensile zog (Max) | Tsis muaj | 760 MPa (110,200 psi) |
| Yield-rau-Tensile Ratio | N/A | Tsawg dua lossis sib npaug li 0.93 |
| Impact Test (CVN) | Tsis xav tau | Yuav tsum tau(eg, 27J @ 0 degree) |
API 5L X70 SAW Pipe Dimensions (Metric)
| NPS (Inch) | Sab nraud txoj kab uas hla (mm) | WT Ntau Yam (mm) | Nyhav (kg/m ) - Piv txwv |
| 16" | 406.4 | 6.4 – 12.7 | 63.1 – 123.3 |
| 24" | 610.0 | 7.9 – 15.9 | 117.2 – 232.8 |
| 36" | 914.0 | 9.5 – 20.0 | 212.1 – 440.9 |
| 48" | 1219.0 | 12.7 – 25.4 | 377.9 – 747.7 |
| 60" | 1524.0 | 12.7 – 25.4 | 473.4 – 938.8 |
API 5L Qib X70 SAW Yeeb Nkab Phab Ntsa Thickness (Standard Reference)
| NPS (Inch) | SCH STD (mm) | SCH XS (mm) | SCH 40 (hli) | SCH 80 (hli) |
| 12" | 9.53 | 12.70 | 10.31 | 17.48 |
| 18" | 9.53 | 12.70 | 14.27 | 23.83 |
| 24" | 9.53 | 12.70 | 17.48 | 30.96 |
| 32" | 9.53 | 12.70 | 17.48* | 12.70* |
| 48" | 9.53 | 12.70 | Kev cai | Kev cai |
(Faj seeb: SSAW kav yog feem ntau kev cai-tsim rau tej thickness uas yuav tsum tau tshaj cov txheej txheem.)
API 5L X70 SAW Pipe Pressure Rating (Theoretical)
Xam siv Barlow's Formula nrog rau Kev Tsim Qauv ntawm 0.72.
| OD (inch) | Phab ntsa Thickness (mm) | Internal siab (PSI) | Internal siab (Bar) |
| 16" | 9.53 | 3,000 | 206 |
| 24" | 12.70 | 2,700 | 186 |
| 36" | 15.88 | 2,200 | 151 |
| 48" | 19.05 | 2,000 | 138 |
Daim ntawv thov ntawm API 5L X70 Kab Yeeb
| Daim ntawv thov teb | Kev piav qhia |
| Gas kis tau tus mob | Siab -Natural gas trunklines hla kev deb. |
| Cov kav dej | Kev thauj cov roj crude thiab roj av los ntawm qhov dej mus rau refineries. |
| Kev Siv Dej | Loj - txoj kab uas hla hauv nroog cov dej hauv nroog thiab cov phiaj xwm kev hloov pauv. |
| Offshore / Marine | Cov txheej txheem piling rau docks los yog pipelines nyob rau hauv cov dej ntiav. |
| Kev tsim kho | Piling kav rau txuas hniav thiab skyscrapers vim muaj zog yield zog. |
Kev ntsuam xyuas xa mus rau API 5L X70 Pipe
Txhawm rau kom ntseeg tau qhov kev ncaj ncees ntawm cov kauv vuam thiab X70 steel, cov kev sim hauv qab no tau ua:
Hydrostatic Test:100% tus kheej cov yeeb nkab kuaj rau cov dej tsis kam.
Kev Ntsuas Ultrasonic (UT):Nruam scanning ntawm kauv weld seam rau sab hauv tsis xws luag.
X-Ray Inspection (RT):Ua rau cov yeeb nkab kawg lossis tag nrho cov seams rau weld fusion zoo.
Charpy V-Notch (CVN) Impact Test:(Yuav tsum tau ua rau PSL2) kom ntseeg tau tias muaj zog ntawm qhov kub thiab txias.
DWT (Drop Weight Tear Test):Feem ntau xav tau rau loj - txoj kab uas hla X70 gas pipelines.
Guided Khoov Test:Txheeb xyuas qhov ductility ntawm qhov sib koom ua ke.
Ntim thiab xa khoom ntawm API 5L X70 / L485 Kab Yeeb
FAQ
PSL2 txhais li cas ntawm cov yeeb nkab?
PSL2sawv rauKhoom Specification Qib 2. Nws yog tus qauv zoo dua thiab kev nyab xeeb rau cov kav hlau steel (hauv qab API 5L) piv rau tus qauv PSL1.
Qhov txawv ntawm PSL 1 thiab PSL 2 kav yog dab tsi?
Qhov txawv tseem ceeb yog qhov ntawdPSL 2 yog tus qauv kev nyab xeeb dua, nruj duatshaj PSL 1.
Ntawm no yog qhov yooj yim tawg ntawm qhov sib txawv:
Impact Toughness:
PSL 1:Tsis xav tau.
PSL 2: Yuav tsum tauCharpy V-kev ntsuas ntsuas (kom paub meej tias cov yeeb nkab yuav tsis tawg hauv qhov txias lossis siab - qhov chaw muaj kev ntxhov siab).
Tshuaj muaj pes tsawg leeg:
PSL 1:Yooj yim txwv.
PSL 2:Kev txwv nruj heev ntawm carbon thiab sulfur los txhim kho weldability thiab lub zog.
Traceability:
PSL 1:Cov ntaub ntawv yooj yim.
PSL 2: Tag nrho traceabilityxav tau (koj tuaj yeem taug qab txhua cov yeeb nkab rov qab mus rau qhov tseeb batch ntawm steel nws los ntawm).
Welding Kho:
PSL 1:Kev kho rau cov yeeb nkab lub cev los ntawm welding raug tso cai.
PSL 2: Txwv tsis pub.Txhua yam tsis xws luag hauv cov yeeb nkab lub cev txhais tau hais tias cov yeeb nkab raug tso tseg.
Lub zog txwv:
PSL 1:Tsuas yog qhia lub zog tsawg kawg nkaus.
PSL 2:Qhia ob leegyam tsawg kawg thiab siab kawglub zog los xyuas kom meej qhov sib xws.
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