Dab tsi yog L360 Steel Pipe Tiag tiag
L360 yog cov kab yeeb nkab qib uas tau teev tseg los ntawm API 5L thiab los ntawm qhov sib npaug GB / T 9711 series, nyob rau hauv uas tus lej qhia txog qhov tsawg kawg nkaus yield zog hauv megapascals. Qhov tsawg kawg nkaus tawm lub zog ntawm 360 MPa sib haum rau cov qauv X52. Cov hlau yog cov pa roj carbon-manganese qib es tsis yog cov hlau lossis cov hlau tsis muaj hlau: nws muaj cov pa roj carbon, manganese, silicon thiab cov khoom seem, nrog micro- alloying ntxiv ntawm niobium, vanadium lossis titanium thaum cov yeeb nkab nkag mus rau PSL2 txoj kev. Kev nkag siab qhov no yog qhov tseem ceeb, vim tias L360 tsis yog corrosion{12}} cov khoom siv tiv thaiv los ntawm nws tus kheej. Kev tiv thaiv corrosion yog los ntawm cov txheej txheej, kev tiv thaiv cathodic lossis kev xaiv ntawm cov corrosion tiag tiag -cov hlau tsis muaj zog, tsis yog los ntawm L360 tus qauv.
Strength Series Sib piv
| Qib | Yam tsawg kawg yield zog | Tsawg kawg tensile zog | Hom txoj hauj lwm |
|---|---|---|---|
| L245 (Qib B) | 245 MPa rau | 415 MPa rau | Tsawg-kev sib sau ua ke thiab cov kab hluav taws xob |
| L290 (X42) | 290 MPa rau | 415 MPa rau | Nruab nrab- kev faib tawm siab thiab kab dej |
| L360 (X52) | 360 MPa siab | 460 MPa rau | Cov kab sib kis, dav dav siab - lub luag haujlwm siab |
| L415 (X60) | 415 MPa rau | 520 MPa rau | Siab -siab ntev- kis tau tus mob |
| L450 (X65) | 450 MPa | 535 MPa ua | Siab - zog, loj - txoj kab uas hla |
Tensile zog qhov tseem ceeb saum toj no yog qhov tsawg kawg nkaus cov nuj nqis rau txoj kev PSL2; PSL1 qhia txog lub zog tensile yam tsawg kawg nkaus yam tsis muaj qhov txwv sab sauv thiab tawm los- rau -tensile ratio tswj uas PSL2 imposes. Vim tias cov lej qis dua li L415 thiab L450, L360 muaj ob qhov txiaj ntsig zoo: nws yooj yim dua rau vuam nrog cov txheej txheem ib txwm ua, thiab nws yooj yim dua rau hauv cov khoom me me thiab hauv daim ntawv seamless thoob plaws qhov ntau thiab tsawg.
Yuav ua li cas L360 txawv ntawm lwm cov yeeb nkab pawg
Tawm tsam ASTM A106 thiab API 5L Qib B: L360 muaj kwv yees li 50% ntau lub zog tawm los, yog li cov phab ntsa nyias nyias tuaj yeem nqa tib lub siab tsim, tab sis nws yuav tsum muaj cov txheej txheem vuam tsim nyog thiab kev tswj xyuas cov cua sov kom nruj dua.
Tawm tsam cov kab ntau dua cov yeeb nkab xws li L415 thiab L450: L360 zam qhov dav dav ntawm cov khoom siv vuam, qhia tau hais tias zoo dua toughness nyob rau hauv tshav kub- cuam tshuam cheeb tsam ntawm nruab nrab phab ntsa thickness, thiab feem ntau yog qhov kev xaiv pheej yig dua thaum lub siab xam tsis xav tau qib siab dua.
Tawm tsam alloy thiab stainless yeeb nkab: L360 tsis muaj lub ntsiab lus tiv thaiv kev tawm tsam tshuaj lom neeg, thiab nws tsis yog npaj rau kev pabcuam creep ntawm qhov kub thiab txias, yog li nws yuav tsum tsis txhob hloov rau chrome- qib molybdenum lossis austenitic hauv cov dej num.
Daim ntawv thov thiab kev taw qhia kev xaiv
L360 yeeb nkab yog siv rau cov roj thiab roj sib txuas thiab sib sau ua ke, tsim - cov kab dej thiab cov tshuaj txhaj, slurry thiab dej conveyance, thiab cov txheej txheem lossis kev ua haujlwm hauv kev tsim kho thiab tshuab. Hauv kev tsim cov kav dej, cov phab ntsa thickness yog xam los ntawm qhov tsawg kawg nkaus yield zog siv cov qauv ntawm ASME B31.4 los yog ASME B31.8, thiab cov txiaj ntsig tau muab sib npaug mus rau qhov ze tshaj plaws muaj phab ntsa tuab thiab kuaj tawm tsam zeb kam rau ua.
Paub meej txog cov khoom lag luam qib: PSL2 ntxiv qhov yuav tsum tsis yog- kuaj kev puas tsuaj, qhov txiaj ntsig siab tshaj plaws - rau - tensile piv ntawm 0.93 thiab Charpy cuam tshuam kev sim.
Txheeb xyuas qhov ntsuas kub tsim, vim tias qhov kev cia siab tau raug txo qis dua 121 degrees Celsius raws li qhov kub thiab txias derating yam ntawm cov raj xa dej.
Qhia qhov xwm txheej ntawm tus me nyuam, xws li - dov, normalized los yog thermo- mechanically dov, vim nws cuam tshuam rau qhov toughness thiab field weldability.
Txiav txim lub txheej txheej txheej nrog cov yeeb nkab yog qhov ua tau: peb - txheej polyethylene lossis fusion- cov epoxy yog ib txwm siv rau cov kab sib kis.
FAQ
Q: Puas yog L360 zoo ib yam li X52 yeeb nkab?
Yog lawm. L360 thiab X52 piav qhia txog tib theem zog; lub L tsim nrog ib tug yield daim duab nyob rau hauv megapascals los ntawm API 5L thiab GB / T 9711, thaum X52 yog cov tsoos designation qhia nyob rau hauv ntau txhiab phaus ib square inch.
Q: Puas yog L360 steel yeeb nkab corrosion resistant?
Nws yog cov pa roj carbon-manganese hlau thiab tsis muaj qhov cuam tshuam rau kev tawm tsam hnyav. Kev tiv thaiv sab nraud cia siab rau txheej txheej thiab kev tiv thaiv cathodic, thiab kev tiv thaiv sab hauv ntawm inhibitors, hauv ob sab phlu lossis hloov mus rau corrosion-resistant alloy.
Q: Qhov twg muaj zog dua, L360 lossis L415?
L415 muaj zog dua, nrog qhov tsawg kawg nkaus tawm lub zog ntawm 415 MPa tiv thaiv 360 MPa rau L360, tab sis nws kuj xav tau kev tswj xyuas zoo dua vuam thiab feem ntau raug nqi ntau dua.
Q: L360 yeeb nkab puas tuaj yeem siv rau qhov kub thiab txias?
Tsuas yog nyob rau hauv qhov txwv ntawm txoj cai kav kav dej. Tshaj li 121 degrees Celsius qhov kev ntxhov siab tso cai yog derated, thiab carbon steel kab yeeb nkab tsis yog creep-cov ntaub ntawv tiv thaiv rau kev ua haujlwm siab - kub.
Q: Cov ntaub ntawv dab tsi yuav tsum nrog L360 yeeb nkab xaj?
Daim ntawv pov thawj EN 10204 3.1 zeb xeem uas qhia txog kev ntsuas cua sov, tensile thiab cov txiaj ntsig tau, cov ntaub ntawv ntsuas hydrostatic, thiab rau PSL2 yeeb nkab qhov kev ntsuam xyuas qhov cuam tshuam thiab tsis yog - cov txiaj ntsig kev ntsuam xyuas puas tsuaj.
