API 5L X70 Electro Fusion Seam Welded
qhia txog cov khoom
API 5L X70 specification siv rau cov kav dej ruaj khov, nyab xeeb, ruaj khov, thiab txhim khu kev qha steel kav. API 5L X70 steel kav muaj npe nrov rau lawv qhov tshwj xeeb nplaim taws retardancy. Txawm tias nyob rau hauv cov xwm txheej hnyav, API 5L X70 steel kav muaj qhov muaj zog corrosion tsis kam. Yog li ntawd, X70 steel kav yog haum rau acidic ib puag ncig.
Mechanical Properties Table
Raws li tuaj yeem pom los ntawm qhov tsawg kawg nkaus lub zog ntawm 485 MPa rau API 5L X70 B qib LSAW yeeb nkab, nws lub zog tensile yam tsawg kawg nkaus yog siab li 635 MPa. API 5L X70 SCH 40 DSAW yeeb nkab muaj ntau yam kev kho deg, xws li blackening, anti-corrosion oil, kub-dip galvanizing, los yog txias galvanizing. Nyob ntawm daim ntawv thov tshwj xeeb ntawm X70 PSL2 qib kauv yeeb nkab, peb tuaj yeem pom zoo kom kho qhov chaw zoo tshaj plaws rau peb cov neeg siv khoom muaj nuj nqis. Piv txwv li, galvanized txheej ntawm X70 PSL1 qib pipeline muaj corrosion kuj zoo heev.
Qib X70Q-PSL2 Mechanical Properties
| Qhov xwm txheej | Kev ntsuas kub | Tensile zog σb Mpa |
Yield Point σs Mpa |
Elongation tom qab Fracture δ % |
Impact Zog Absorption KV 2 J |
|---|---|---|---|---|---|
| weld yeeb nkab / seamless yeeb nkab | * | 570~760 | 485~635 | * | |
| OD Tsawg dua lossis sib npaug rau 30 | 0 degree | Ntau dua lossis sib npaug 27 | |||
| OD>30~48 | 0 degree | Ntau dua lossis sib npaug li 40 | |||
| OD>48~56 | 0 degree | Ntau dua lossis sib npaug li 54 | |||
| OD>56~84 | 0 degree | Ntau dua lossis sib npaug li 68 |
Mechanical Property Testing
Qhov kev sim no suav nrog cov qauv ntawm cov yeeb nkab steel nws tus kheej los yog ib qho kev xeem uas tsim nyob rau hauv tib lub batch thiab txheej txheem raws li cov yeeb nkab steel los xyuas seb nws cov khoom puas ua tau raws li cov kev cai nruj ntawm X70. Tensile Testing: Qhov no ncaj qha ntsuas lub zog tawm los, lub zog tensile, thiab elongation ntawm cov yeeb nkab steel. Lub zog tawm los ntawm tsis pub tsawg dua 483 MPa yog qhov tseem ceeb rau X70, thaum lub txiaj ntsig tsim nyog - rau -tensile piv cuam tshuam rau cov kav dej txoj kev nyab xeeb thiab lub zog muaj peev xwm nyob rau hauv overpressure. Charpy V-Qhov Kev Ntsuas Qhov Ntsuas: Qhov kev sim no ntsuas qhov tawv ntawm cov yeeb nkab steel, tshwj xeeb tshaj yog cov vuam thiab cua sov- thaj tsam cuam tshuam. Los ntawm kev ntsuas lub zog nqus thaum tawg ntawm qhov kub thiab txias (piv txwv li, -10℃lossis -20 degree), nws ua kom ntseeg tau tias cov raj xa dej tuaj yeem tiv thaiv kev pib thiab nthuav tawm ntawm cov kab nrib pleb hauv qhov chaw txias lossis nyob rau hauv qhov cuam tshuam, uas yog qhov tseem ceeb rau kev tiv thaiv kev puas tsuaj ntev -ntau tawg. Hardness Testing: Qhov kev ntsuam xyuas no yog ua nyob rau ntawm qhov chaw sib txuas. Nws tus nqi yog nyob rau hauv kev txheeb xyuas qhov normality ntawm weld joint lub microstructure thiab xyuas kom meej tias tus nqi hardness yog nyob rau hauv tus qauv tso cai ntau yam, raws li ntau hardness feem ntau ua rau hydrogen-induced cracking los yog kev nyuaj siab corrosion cracking susceptibility.
Hais txog peb
GNEE STEEL Group, raws li cov kws tshaj lij steel xa tawm thiab cov tub luam, muaj lub sijhawm ntev - thiab ruaj khov ntawm cov khoom siab - zoo API 5L X70 welded kav. Peb tsom ntsoov rau kev muab cov khoom zoo tshaj plaws. Cov neeg siv khoom tuaj yeem tau txais API 5L X70 siab- lub zog steel kav hauv ntau qhov tuab, qhov ntau thiab tsawg, thiab kho qhov chaw.
Cim npe nrov: API 5L X70 Electro Fusion Seam Welded Tuam Tshoj API 5L X70 Electro Fusion Seam Welded manufacturers, lwm tus neeg
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