Construction Points cold-rolled ribbed steel bars: cold-rolled ribbed steel bars to check the quality documents. The factory mainly the cold-rolled ribbed steel bars certificate, CRB550 cold-rolled steel plant, supervision and sampling inspection reports and testimony and sampling of steel mechanical properties, process performance test reports, after two tests must be above the provincial level administrative building administrations certification examination testing unit testing, cold-rolled steel, the technical indicators must comply with the relevant specifications. Unit project, quality supervisors should be based on engineering characteristics of the main specifications supervision and sampling. Cold-rolled ribbed steel bars: site should be determined to avoid the protection layer pads and steel bracket installed cold-rolled ribbed steel bars artificially stampede and mechanical crush, its deformation capacity is limited, once the damage occurs, even if the surface of repair, CRB550 cold-rolled steel manufacturer, will reduce their physical performance and durability. To approach the material are strictly technical performance test. It should be in ensuring the seismic capacity of the premise, to be limited to use, suitable for use in a large number of concrete cast plate.