High-filled round round leeg yog puag ncig cov leeg uas tsim los ntawm vuam nws cov hlau nplaum) ua ke ntawm cov nyhuv kub ntawm cov khoom kub tam sim no, uas yog tom qab ntawd zoo li lub square hlab. Ib qho ntxiv, ntau zaus welded round round tuaj yeem hloov mus rau hauv square tubes los ntawm cov txheej txheem hu ua "lub raj raug thawb thiab ntsuas rau hauv cov duab square los ntawm kev quab yuam.
High-zaus Welded square cov hlab yog feem ntau hu ua square-hlab, kab hlab yas, thiab lwm yam.
