ERW (Electric Resistance Vuam) steel yeeb nkabyog hu ua ERW yeeb nkab lossis HF welded yeeb nkab, nws muaj ntau yam zoo li hauv qab no:

1) kev ua haujlwm siab, tus nqi qis, nws tus nqi yog hais txog UOE ncaj seam submerged arc welded steel, 85%;

2) siab precision, nws roundness (Roundenss) yog superior rau kauv welded yeeb nkab, tus counterpart yuav txuag tau ntau lub sij hawm nyob rau hauv lub tshav pob;

3) du nto, zoo nkauj tsos, uas yog conducive rau sab hauv thiab txheej txheej coated.Yav dhau los, kev cia siab tsis zoo ntawm ERW yeeb nkab welds, cov yeeb nkab tau muaj ntau qhov xwm txheej, yog li txwv tsis pub siv ERW yeeb nkab.Tsis ntev los no, Zhejiang Jinzhou Group tau nqis peev ntau, los ntawm kev sib koom tes ntawm cov kws tshawb fawb thiab cov chaw tsim khoom yeeb nkab, qhov xwm txheej no tau hloov pauv ntau ntawm ERW steel yeeb nkab weld zoo tuaj yeem muab piv nrog LSAW piv.

Cov txheej txheem ntawm ERW yeeb nkab los ua cov kev ntsuas hauv qab no:

1) tswj cov khoom siv hluav taws xob hauv cov txheej txheem, ntau yam cuam tshuam rau cov khoom siv hluav taws xob, thawj zaug yog lub kaum sab xis (Convergency Angle).Cov txiaj ntsig tau pom tias, nyob rau hauv cov ntaub ntawv ntawm lwm yam tsis tu ncua, lub convergence lub kaum sab xis loj dhau los ua kom txias vuam, lub convergence lub kaum sab xis me dhau yuav ua rau kub hnyiab heev.Lwm yam cuam tshuam rau cov thermal input yeeb nkab nyob rau hauv pem hauv ntej ceev ntawm txoj kab sib sau.Cov txiaj ntsig tau pom tias nyob rau hauv rooj plaub ntawm lwm yam tsis tu ncua, qhov nrawm nrawm tuaj yeem ua rau vuam txias, qeeb dhau, tuaj yeem ua rau kub hnyiab tau yooj yim.

2) txhim kho cov kab tsis siv neeg tshawb nrhiav tube Hoobkas hauv Jinzhou, txhawm rau txhawm rau ua kom zoo ntawm ERW yeeb nkab, ntxiv ntau qhov kev tsis txaus ntseeg hauv cov yeeb nkab tshuab.Unwinding sawb ntawm ob sab ntawm kev kuaj ultrasonic, eddy tam sim no tshuaj xyuas tom qab ua tiav ntawm vuam.Tsis tas li ntawd, ib tug xov tooj ntawm kev soj ntsuam pom, thiab sampling rau lub flattening test thiab lwm yam mechanical zog test.