API 5Lfeem ntau yog hais txog cov yeeb nkab steel yeeb nkab (pipeline yeeb nkab) ntawm kev ua raws li tus qauv, cov kav dejcev steelsuav nrog seamless steel yeeb nkab thiab welded steel yeeb nkab ob pawg. Tam sim no nyob rau hauv cov roj pipeline peb feem ntau siv welded steel yeeb nkab yeeb nkab hom kauv submerged arc welded yeeb nkab (SSAW), ncaj seam submerged arc welded yeeb nkab (LSAW), kuj welding yeeb nkab (ERW), seamless steel yeeb nkabfeem ntau yog siv rau hauv txoj kab uas hla yog tsawg dua 152mm.
Lub teb chaws tus qauv GB / T 9711-2011 steel yeeb nkab rau kev thauj mus los hauv cov kav dej hauv kev lag luam roj thiab roj tau muab tso ua ke raws li API 5L.
GB / T 9711-2011 qhia txog kev tsim cov kav dej seamless thiab welded steel ntawm ob theem khoom specification (PSL1 thiab PSL2) rau cov kav dej hauv kev lag luam roj thiab roj. Yog li ntawd, tus qauv tsuas yog siv rau seamless steel kav thiab welded steel kav rau roj thiab roj tsheb thauj mus los, thiab tsis muaj feem xyuam rau cam khwb cia hlau kav.
Qib Steel
Cov qib steel ntawm cov khoom siv raw rau cov kav hlau steel ntawm API 5L tus qauv no yog GR.B, X42, X46, X52, X56, X60, X70, X80, thiab lwm yam. Cov qib steel ntawm cov kav hlau steel yog txawv, thiab cov kev cai rau cov khoom siv raw. thiab ntau lawm kuj txawv, tab sis cov pa roj carbon sib npaug ntawm cov qib steel sib txawv yog tswj nruj heev.
Cov qauv zoo
Hauv API 5L yeeb nkab qauv, cov qauv zoo (lossis cov tseev kom muaj) rau cov yeeb nkab steel tau muab faib ua PSL1 thiab PSL2. PSL yog cov ntawv luv rau cov khoom lag luam tshwj xeeb.
PSL1 muab cov txheej txheem dav dav ntawm cov yeeb nkab zoo; PSL2 ntxiv qhov yuav tsum tau ua rau cov tshuaj muaj pes tsawg leeg, tsis muaj zog, lub zog muaj zog, thiab NDEs ntxiv.
Post lub sij hawm: Jun-24-2024
