HSAW kav dej (kauv submerged arc welded yeeb nkab), yog mabe ntawm kub dov sawb hlau thiab dabtsi yog khoov tsim raws li kauv, tsis siv neeg submerged arc vuam nqa tawm nyob rau hauv lub seam thiab cov txheej seam welded kauv seam steel yeeb nkab (tseem hu ua kauv welded yeeb nkab , kauv yeeb nkab, kauv steel yeeb nkab).Raws li cov laj thawj hauv qab no, nws tau siv dav hauv kev tsim cov kab loj loj steel yeeb nkab:
1) hloov lub kaum sab xis, koj tuaj yeem siv tib qhov dav sawb ntau lawm calibres steel yeeb nkab;
2) vim nws yog ib qho txuas txuas ntxiv, qhov ntev ntawm cov yeeb nkab steel ntev yog txwv tsis pub;
3) weld kauv-puab zoo li niaj hnub faib rau ntawm ib ncig ntawm tag nrho cov yeeb nkab steel, steel yeeb nkab loj, siab precision, siab siv;
4) yooj yim hloov qhov me me haum rau me me ntawm cov yeeb nkab steel ntau lawm ntau yam.

Kauv weld seam ncaj raj ntev, raj ntev L, qhov ntev weld yog L / cos (8).Rau lub sij hawm ntev debating cov kauv thiab ncaj seam yeeb nkab, tshwj xeeb tshaj yog, leej twg yog superior piv nrog UOE steel yeeb nkab.Kauv yeeb nkab tsim tshuab rau niaj hnub no, peb yuav tsum ua kom tiav thiab raug kev ntsuam xyuas thiab kev sib piv, lub tswv yim ntawm ?? ib tug ntev kauv weld.

Ua ntej ntawm tag nrho cov, vim qhov tsis xws luag nyob rau hauv lub weld parallel, rau lub kauv yeeb nkab, lub weld defects yog li "oblique defects".Thaum siv, tus thawj coj kev ntxhov siab ntawm cov yeeb nkab steel, cov yeeb nkab axis kev taw qhia ntawm qhov sib npaug ntawm qhov tsis xws luag ntev yog samll tshaj li cov yeeb nkab ncaj seam me me;Thib ob, txij li cov yeeb nkab steel yog dov phaj, cuam tshuam toughness loj anisotropy raws li dov kev taw qhia CVN tus nqi tshaj qhov perpendicular rau dov kev taw qhia ntawm CVN tus nqi peb zaug siab dua.Ncaj seam yeeb nkab raug kev txom nyem los ntawm lub ntsiab kev nyuaj siab yog precisely perpendicular mus rau cov kev taw qhia ntawm lub qis tshaj plaws yeeb nkab tej yam kuj, thaum lub kauv yog stagger lub qis tshaj nyob rau hauv cov kev taw qhia ntawm cov yeeb nkab tej yam kuj, thiaj li hais tias cov kauv weld tsis zoo rau hauv qhov zoo.