Deformed steel bar yog nto ribbed steel tuav, tseem hu ua ribbed steel tuav, feem ntau nrog ob longitudinal tav thiab transverse tav tusyees faib raws qhov ntev kev taw qhia. Cov duab ntawm transverse rib yog kauv, herringbone thiab crescent, Ntsia hlau xov hlau yog ib qho tsim nyog hlau rau lub tsev cov khoom saum toj no nruab nrab, thiab Tuam Tshoj muaj ib tug tej yam export ntim txhua txhua xyoo.