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冷轧带肋钢筋是一种高效钢材，为国家建设部、冶金部重点推广产品。该钢筋较为突出的特点是强度高、塑性好、与破的锚固性能良好。可用于预制构件，也可用于现浇结构；可用于预应力构件，也可用于非预应力硅构件及制品，应用范围很广。LL650级和LL800级钢筋用于预应力构件每立
Cold-rolled ribbed steel bar is a kind of high-efficiency steel, which is a key promotion product of the Ministry of Construction and the Ministry of Metallurgy. The outstanding features of the steel bar are high strength, good plasticity, and good anchorage performance. Can be used for prefabricated components, can also be used for cast-in-place structures; can be used for prestressed components, can also be used for non-prestressed silicon components and products, a wide range of applications. LL650 and LL800 grade steels are used for each prestressed member