Karolo e sekoti ke ntho ea geometry e itseng e entsoeng ka tšepe kapa tšepe le thepa e nang le matla a itseng le ho tiea (joaloka polasetiki, aluminium, fiber ea khalase, joalo-joalo) ka ho roala, extrusion, casting le tse ling tse joalo. Ho kenyeletsoa angle steel, channel steel, I-beam, square steel, H-beam, joalo-joalo ke ntho ea geometry e itseng e entsoeng ka tšepe kapa tšepe le thepa e nang le matla le ho tiea ho itseng (joalo ka polasetiki, aluminium, fiber ea khalase. , joalo-joalo) ka ho thetheha, extrusion, casting le tse ling tse joalo. Ho kenyelletsa tšepe ea angle, tšepe ea kanale, I-beam, tšepe e sekoere, H-beam, joalo-joalo.