L415M yog cov khoom siv qib tsim rau kab yeeb nkab. "L" sawv cev rau kab yeeb nkab, "415" qhia qhov tsawg kawg nkaus lub zog ntawm 415 MPa, thiab "M" qhia tias cov khoom yog tsim los ntawm cov txheej txheem thermomechanically tswj (TMCP). Qib steel no yog tsim los sib npaug lub zog thiab toughness thaum ua tau raws li cov kev cai thauj mus los ntawm ib puag ncig nyuaj.
Cov yam ntxwv tseem ceeb ntawm L415M kab yeeb nkab suav nrog:
Siab zog: Tawm lub zog siab tshaj 415 MPa, muaj peev xwm tiv taus siab sab hauv;
Zoo toughness: Ua kom muaj kev cuam tshuam tsis zoo txawm tias qhov kub thiab txias, txo qhov kev pheej hmoo ntawm kev tawg tawg;
Weldability zoo heev: Haum rau ntawm - qhov chaw vuam, txo qhov nyuaj ntawm cov yeeb nkab txuas;
Corrosion kuj: Corrosion kuj tuaj yeem txhim kho los ntawm kev ntxiv cov kab hlau rhuav lossis cov txheej txheem kho.
L415M seamless kab yeeb nkab Mechanical Properties:
Yield zog: Ntau dua lossis sib npaug rau 415MPa
Tensile Strength: Ntau dua lossis sib npaug rau 520MPa
Elongation: Ntau dua lossis sib npaug li 20%
Charpy Impact Zog (-20 degree): Ntau dua lossis sib npaug rau 40J
Cov khoom no ua raws li GB/T 9711-2017 "Steel Pipes for Pipeline Transportation Systems in the Oil and Gas Industry" thiab API 5L PSL2 standard, thiab yog haum rau ntev - deb, high-pressure roj thiab roj daim ntawv thov kev thauj mus los.
L415M seamless kab yeeb nkab tshuaj muaj pes tsawg leeg:
C Tsawg dua lossis sib npaug li 0.16%
Mn Tsawg dua lossis sib npaug li 1.60%
P Tsawg dua lossis sib npaug li 0.025%
S Tsawg dua lossis sib npaug li 0.015%
Nb + V + Ti Tsawg dua lossis sib npaug li 0.15%
Daim ntawv thov ntawm L415M Kab Yeeb
Vim nws qhov kev ua tau zoo sib npaug, L415M pipeline yeeb nkab tau dav siv hauv cov xwm txheej hauv qab no:
Roj thiab roj tsheb thauj mus los
Qhov no yog daim ntawv thov feem ntau ntawm L415M. Ntev - cov roj thiab cov kav dej nyob deb yuav tsum tau tiv thaiv kev kub ntxhov thiab kev hloov geological, thiab lub zog thiab tawv ntawm L415M tuaj yeem ua tau raws li cov cai no.
Nroog Gas Pipeline Networks
Lub nroog underground gas pipelines muaj kev xav tau siab rau cov khoom siv kev nyab xeeb thiab kav ntev. Qhov yooj yim ntawm vuam thiab corrosion kuj ntawm L415M ua rau nws nyiam cov khoom siv rau nruab nrab thiab siab siab gas pipelines.
Chemical Media Tsheb thauj mus los
Qee cov raj xa dej yuav tsum thauj cov xov xwm corrosive xws li hydrogen sulfide. L415M tuaj yeem hloov mus rau qhov chaw ib puag ncig los ntawm txheej txheej sab hauv lossis ntxiv cov tshuaj tiv thaiv - corrosion alloys (xws li chromium thiab molybdenum).
Cov ntawv thov kev txhawb nqa
Ntxiv nrog rau nws txoj kev thauj mus los, L415M cov kav xa dej kuj tseem tuaj yeem siv rau kev txhawb nqa cov qauv hauv cov choj, cov tsev, thiab lwm qhov chaw, tab sis nws cov qauv tsim yuav tsum coj mus rau hauv tus account load thiab qaug zog lub neej.
