Makinawa amagwiritsidwa ntchito makamaka m'mafakitale azitsulo monga zomangamanga, milatho, kayendetsedwe ka tauni, etc.
Ntchito yayikulu ndikupangira ma beveling grooves, nkhope zakumapeto ndi ma web arc grooves achitsulo chooneka ngati H ndi ma flanges.
Utumiki ndi chitsimikizo