Lub siab-zaus welded round tube yog ib puag ncig lub raj ua los ntawm vuam cov khoom siv hlau (feem ntau steel phaj) ua ke siv cov hluav taws xob tiv thaiv hluav taws xob ntawm high-frequency tam sim no.
Ntxiv rau qhov raug hu ua high-frequency welded round tube, nws kuj tseem hu ua high-frequency ncaj seam tube, ib qho hluav taws xob welded ncaj seam tube, lub raj ncaj seam, lub raj siab, high-frequency welded yeeb nkab, los yog tsuas yog ib puag ncig raj.
