API 5L X42 PSL2 Carbon Steel Seamless Pipe Description
X42 seamless pipeline tubing yog cov khoom siv tshwj xeeb steel yeeb nkab tsim los thauj cov kua dej xws li roj thiab roj. Tsim los ntawm cov txheej txheem seamless, hom tubing no muaj lub zog siab thiab kev sib khi zoo heev. Lub npe "X42" qhia nws qhov tsawg kawg nkaus tawm los ntawm 42,000 psi (kwv yees li 290 MPa), sawv cev rau qib khoom siv hauv API 5L tus qauv.
PSL2 pipeline tubing yog siv dav siv siab - cov khoom siv yeeb nkab ua haujlwm hauv kev lag luam roj thiab roj, nrog nws lub npe puv yog "Pipeline Steel Pipe Level 2." Raws li qib thib ob zoo raws li API 5L, PSL2 tsim cov qauv nruj dua li PSL1 hais txog cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, qhov tseeb qhov tseeb, thiab tsis yog - kuaj kev puas tsuaj. Cov kev cai no txhawm rau ua kom tau raws li qhov xav tau ntawm siab -siab, ntev- kev thauj mus los deb, thiab thaj chaw geological complex.
Los ntawm cov tshuaj muaj pes tsawg leeg foundations, PSL2 pipeline tubing qhia meej meej tswj cov ntsiab lus xws li carbon, sulfur, thiab phosphorus. Piv txwv li, qhov kev txwv ntawm cov pa roj carbon sib npaug (CEQ) ua kom cov cua sov- cuam tshuam cheeb tsam thaum lub sij hawm vuam tsis tshua muaj kev tawg, thaum txo cov sulfur thiab phosphorus cov ntsiab lus tseem ceeb txhim kho cov khoom tiv thaiv hydrogen-induced cracking (HIC). Qhov no yog qhov tseem ceeb tshwj xeeb rau cov kav xa dej thauj corrosive media uas muaj hydrogen sulfide.
Nyob rau hauv cov nqe lus ntawm cov neeg kho tshuab kev ua tau zoo, PSL2 pipeline tubing yuav tsum tau ntau dua yield thiab tensile lub zog thaum tuav zoo toughness. Raws li API 5L cov qauv, PSL2 tubing feem ntau nthuav tawm lub zog ntau ntawm 360-555 MPa, nrog lub zog tensile tsis tsawg dua 485 MPa. Tsis tas li ntawd, nws yuav tsum dhau Charpy V- qhov ntsuas qhov cuam tshuam los xyuas kom muaj kev puas tsuaj txaus nyob rau hauv qhov chaw uas muaj qhov kub thiab txias, uas yog qhov tseem ceeb rau kev tsim cov kav dej hauv Arctic thiab lwm thaj chaw txias heev.
API 5L X42 PSL2 Seamless Pipe Specification
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