EN10210 S355J2H yog cov khoom seem hollow uas tau siv dav hauv ntau yam kev tsim kho. Cov khoom no paub txog nws lub zog siab, ua haujlwm ntev, thiab ua haujlwm zoo rau ntau yam ib puag ncig xws li huab cua thiab xeb. Nws yog cov khoom siv ntau yam uas tuaj yeem siv rau ntau yam kev siv xws li kev tsim vaj tsev, txuas hniav, thiab cov yees.
