API 5L X42 thiab API 5L X80 yog API (American Petroleum Institute) 5L tus qauv kab yeeb nkab specifications rau kev lag luam roj thiab roj. Lub ntsiab sib txawv ntawm lawv yog raws li nram no:
Tshuaj muaj pes tsawg leeg:
API 5L X42: Nws yog qib nruab nrab muaj zog carbon steel nrog cov ntsiab lus carbon ntawm 0.18% - 0.28% thiab manganese cov ntsiab lus ntawm 1.0% {{9 }}.6%. Nws kuj muaj me me ntawm alloying ntsiab xws li chromium, molybdenum, thiab vanadium. Cov ntsiab lus chromium thiab molybdenum tuaj yeem ncav cuag 0.15%, thiab cov ntsiab lus vanadium tuaj yeem ncav cuag li 0.08%. Lub zog nominal tawm los yog 290MPa.
API 5L X80: Cov ntsiab lus carbon feem ntau yog {{10}}}06% - 0.10%, cov ntsiab lus manganese yog 1.60% - 2.10%, thiab nws muaj ntau yam hlau xws li niobium, titanium, npib tsib xee, chromium, thiab tooj liab. Cov ntsiab lus niobium feem ntau yog 0.06% - 0.10%, titanium cov ntsiab lus yog 0.01% - 0.03%, cov ntsiab lus nickel yog 0.20% - 0.50%, cov ntsiab lus chromium yog 0.20% - 0.30%, thiab cov ntsiab lus tooj liab yog 0.15% - 0.30%. Qhov tsawg kawg nkaus yield zog yog 552MPa thiab qhov tsawg kawg nkaus tensile zog yog siab tshaj 625MPa.
Siv / Daim Ntawv Thov:
API 5L X42: Feem ntau siv rau cov roj av, dej thiab roj kav dej uas muaj kev sib kis tsis tshua muaj siab thiab tsis muaj kev txwv tshwj xeeb rau cov khoom siv kho tshuab, xws li cov av zoo tib yam roj thiab cov kav dej.
API 5L X80: Feem ntau yog siv nyob rau hauv ntev-ntev, loj-inch, high-pressure roj thiab gas trunk pipelines, tshwj xeeb tshaj yog nyob rau hauv tej qhov chaw uas yuav tsum tau siab rau pipeline zog thiab corrosion kuj, xws li cov roj sib sib zog nqus dej hiav txwv thiab roj tsheb thauj mus los, high- sulfur roj thiab roj teb, thiab lwm yam.
Weldability thiab formability:
API 5L X42: Vim nws lub zog tsis tshua muaj zog thiab cov ntsiab lus alloying, yooj yim muaj pes tsawg leeg, tsis tshua muaj qhov yuav tsum tau ua rau cov txheej txheem tsis zoo thaum vuam thiab sib sau, thiab ua haujlwm yooj yim.
API 5L X80: Vim nws lub zog siab thiab nplua nuj alloying ntsiab lus, nws yog ib qho tsim nyog los tswj cov txheej txheem tsis raug xws li vuam tam sim no, voltage, ceev, thiab preheating kub thaum vuam, uas ua rau vuam nyuaj dua, tab sis cov khoom siv ntawm cov khoom tsim. pipeline zoo dua thiab tuaj yeem tiv taus kev ua haujlwm hnyav dua.
API 5L PSL2 X42 Carbon Kab Yeeb
