Chitsulo cha H-beam, ndi mphamvu zake zazikulukapangidwe kachitsulo, yakhala chinthu chofunikira kwambiri pa ntchito zomanga ndi mafakitale padziko lonse lapansi. Gawo lake losiyana la "H" limapereka mphamvu zambiri, limalola kuti lizitha kugwira ntchito kwa nthawi yayitali, motero ndiye njira yoyenera kwambiri pa nyumba zazitali, milatho, mafakitale ndi mapulojekiti akuluakulu.
Nthawi yotumizira: Novembala-18-2025