The steel reinforcement rolled by three dimensional carbide rolls has fine appearance surfacehigh precision in dimension andclear ribbed mark. Thoseimproved the comprehensive properties Of ribbed steel reinforcements. The primary rollingtonnageare 600-2000tons. which is 20-30 times more than that of common tool steelrolls. Because cemented carbide rolls can bereground and used again, the production cost is reduced reatly, That markedly improved productive eficiencvand profit