H-shaped steel yog cov khoom siv hlau nrog H-shaped cross-section, uas feem ntau siv hauv kev tsim kho, txuas hniav, tshuab tsim khoom thiab lwm yam.
Nws qhov tshwj xeeb cross-sectional zoo muab nws lub zog siab thiab nruj, tso cai rau nws tiv taus siab dua thiab hnyav.
