Gr.B: Qib B steel; API 5L tus qauv yog siv. Tus qauv hauv tsev sib raug rau API 5L tus qauv yog GB / T9711 tus qauv, thiab Gr.B sib haum rau L245 cov khoom.
Pipeline steel yog hais txog ib hom hlau uas yuav tsum tau siv tshwj xeeb rau cov kav dej xws li roj thiab roj. Raws li cov thickness thiab tom qab tsim, nws tuaj yeem tsim los ntawm cov kub dov mills, lub tshuab hluav taws xob coil mills los yog nruab nrab thiab tuab phaj mills, thiab cov kav hlau loj loj yog tsim los ntawm cov kav vuam lossis UOE ncaj seam vuam.
High-temperature thiab high-pressure alloy steel kav yuav tsum tau rau cov kav dej loj, cov yeeb nkab fittings, bypass systems, thiab lwm yam. series, thiab thoob ntiaj teb GB series.
Pipeline steel yog cov phaj hlau rau cov kav dej, feem ntau yog siv rau kev ua thiab tsim cov roj thiab cov kav dej. Thaum siv, ntxiv rau qhov yuav tsum tau muaj zog compressive siab, nws tseem yuav tsum muaj qhov kub thiab txias toughness thiab zoo heev vuam kev ua tau zoo.
Cov txheej txheem kev cai
(1) DWTT Ntau dua lossis sib npaug li 85% SA ntawm qhov ntsuas kub qis tshaj (-5);
(2) Charpy impact absorption zog Ntau dua los yog sib npaug rau 145 J ntawm qhov kub ua haujlwm qis tshaj (-5).
Cov txheej txheem ntawm cov kav dej steel feem ntau txais yuav American Petroleum Institute tus qauv API Spec 5L.
2. Nws muaj qhov yuav tsum tau nruj me ntsis ntawm cov txheej txheem smelting, thiab cov teeb meem kev ua haujlwm feem ntau yog tsom rau:
1) Tswj cov ntsiab lus impurity;
2) Kev tswj ntawm kev suav nrog;
3) Tswj cov khoom nqaim.
3. Cov txheej txheem ntau lawm ntawm cov kav dej kav
Raws li cov txheej txheem, welded steel kav feem ntau muab faib ua peb txheej txheem: hluav taws xob tsis kam vuam (ERW), muab kauv submerged arc vuam (SSAW) thiab ncaj seam submerged arc vuam (LSAW). Cov kav dej welded tsim los ntawm peb cov txheej txheem no muaj ntau txoj haujlwm hauv daim ntawv thov vim lawv cov khoom sib txawv, tsim cov txheej txheem, qhov ntau thiab tsawg thiab zoo.
Carbon Steel API 5L GR B Seamless Pipes
