Cov kav hlau welded raug muab faib ua:
Hluav Taws Xob Tiv Thaiv Welded Yeeb Nkab(ERW),Cov Yeeb Nkab Hlau Kauv(SSAW),Cov Yeeb Nkab Ntev Uas Muaj Cov Kav Dej Sib Txuas(LSAW)
Loj:
①ERW Cov Yeeb Nkab Hlau:
OD: 21.3mm ~ 660mm; WT: 1mm ~ 17.5mm; NTEV: 0.5mtr ~ 22mtr
②LSAW Cov Yeeb Nkab Hlau:
OD: 406mm ~ 1422 hli; WT: 6.4mm ~ 44.5mm; NTEV: 5mtr ~ 12mtr
③SSAW Cov Yeeb Nkab Hlau:
OD: 219.1mm ~ 3500mm; WT: 6mm ~ 25mm (Txog 1 ''); NTEV: 6mtr ~ 18mtr, SRL, DRL
Tus Qauv & Qib:
ASTM A53, Qib A/B/C, API 5L, PSL1, PSL2, GR.B/X42-X80, ASTM A795, ASTM A135, ASTM A252, GR.1/2/3, AWWA C200
▇ ▍ Kev piav qhia
Cov yeeb nkab hlau uas vuam tau tsim los ntawm kev siv cov phaj hlau tiaj tiaj lossis cov hlau uas ua los ntawm cov hlau, thiab nws cov txheej txheem tsim khoom tsim cov xov sib txuas hauv nws lub cev. Tshwj xeeb, thaum cov yeeb nkab hlau uas vuam tau tsim, cov phaj hlau lossis cov hlau uas khoov tau thiab tom qab ntawd vuam rau hauv cov duab puag ncig, cov yeeb nkab ib txwm muaj lossis cov duab plaub fab. Cov yeeb nkab LSAW, cov yeeb nkab SSAW thiab cov yeeb nkab ERW yog cov yeeb nkab hlau uas vuam thiab raug faib ua pawg raws li txoj kev vuam. Piv txwv li, cov yeeb nkab LSAW yog vuam ntev, thiab cov yeeb nkab SSAW yog vuam kauv. Cov yeeb nkab ERW yog vuam hluav taws xob, uas ua rau muaj cov xov sib txuas uas khiav sib luag raws lub cev yeeb nkab.
▇ ▍ERW Cov Yeeb Nkab Hlau
Cov kav dej vuam uas muaj zaus siab feem ntau yog cov kab ncaj, tab sis cov kav dej hlau uas muaj kab ncaj tsis tas yuav muaj zaus vuam. Cov kav dej hlau uas muaj zaus siab ncaj yog tsim los ntawm cov nyhuv ntawm daim tawv nqaij thiab qhov cuam tshuam ntawm cov tam sim no siab tom qab lub phaj kub dov raug tsim los ntawm lub tshuab molding, thiab ntug ntawm lub raj khoob raug cua sov thiab yaj, thiab vuam siab yog ua nyob rau hauv qhov kev ua ntawm lub menyuam nias kom paub txog qhov tsim tawm. Cov kav dej hlau uas muaj zaus siab tsis zoo yog txawv ntawm cov txheej txheem vuam cov kav dej vuam ib txwm muaj. Cov vuam yog ua los ntawm cov khoom siv hauv paus ntawm lub cev hlau, thiab lub zog kho tshuab zoo dua li cov kav dej vuam dav dav. Qhov saum npoo yog du, qhov tseeb siab, tus nqi qis, thiab muaj qhov siab vuam qis, uas yog qhov zoo rau kev txheej txheem ntawm 3PE tiv thaiv xeb txheej.
▇ ▍LSAW Cov Yeeb Nkab Hlau
Kev vuam hlau longitudinal submerged arc yog tsim los ntawm kev siv ib lub phaj nruab nrab thiab tuab ua cov khoom siv raw, nias (dov) lub phaj hlau hauv pwm lossis tshuab ua lub raj khoob, siv ob sab submerged arc vuam, thiab nthuav dav lub cheeb. Qhov ntau ntawm cov phaj hlau pub tuaj yeem hloov kho tau raws li cov qib hlau sib txawv, phab ntsa tuab, thiab qhov dav ntawm phaj. Tib lub sijhawm, lub luag haujlwm deformation compensation zoo zam cov teebmeem tsis zoo ntawm cov pwm deformation ntawm kev tsim thiab ua kom lub phaj hlau tiaj tus thaum lub sijhawm nias. Cov kauj ruam pub mis yog sib xws thaum lub sijhawm tsim, ua kom lub raj khoob puag ncig thiab qhov tiaj tus ntawm ntug vuam. Cov khoom tiav lawm muaj ntau yam kev qhia tshwj xeeb, thiab qhov vuam muaj qhov tawv zoo, plasticity, uniformity, thiab compactness. Nws muaj qhov zoo ntawm cov yeeb nkab loj, phab ntsa tuab ntawm yeeb nkab, tiv taus siab, tiv taus kub qis, thiab tiv taus corrosion muaj zog.
▇ ▍SSAW Cov Yeeb Nkab Hlau
Cov yeeb nkab vuam uas muaj kauv (SSAW yeeb nkab, tseem hu ua HSAW yeeb nkab). Cov yeeb nkab no yog tsim los ntawm kev siv tshuab vuam uas muaj kauv hauv qab dej. Cov yeeb nkab vuam uas muaj kauv yog tsim los ntawm kev siv cov phaj nqaim dua lossis cov kauj kub dov, uas ua rau lawv cov nqi tsim khoom tsawg dua. Cov kab vuam zoo li lub helix. Cov txheej txheem vuam uas muaj kauv tso cai rau kev tsim cov yeeb nkab loj uas tsim nyog rau kev thauj cov roj thiab roj av ntau. Qee cov yeeb nkab SSAW tau txwv rau kev siv siab qis.
Lub sijhawm tshaj tawm: Lub Kaum Hli-16-2023