Construction Points cold-rolled ribbed steel bars: cold-rolled ribbed steel processing. Cold-rolled ribbed steel bars do not make a board at the end hook; as a negative moment reinforcement plate 90 to be produced. Bending; as there are requirements for seismic beams stirrups should make 135. Bent, folded after the length of the straight section not less than 10d, construction steel manufacturer, should not be less than the inner diameter of the curved arc 5d and longitudinal reinforcement diameter. Cold-rolled ribbed steel machining tolerances. Cold-rolled ribbed steel base material: cold-rolled ribbed steel bars should give priority to high-speed control without twisting wire. Studies have shown that, CRB550 construction steel, Q235 base material in cross-sectional reduction rate of 20-30%, construction steel factory, the strength and elongation can LL550 cold-rolled ribbed steel bars of the indicator. In addition to cold-rolled ribbed steel wire rod rolling ФR7 Ф8 appropriate, the construction steel, the remaining co-sectional size of the compression rate is too large, resulting in high product strength, and elongation of less than 8%.