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 rebar prices, 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 department of construction certification examination testing unit testing, the technical indicators must comply with the relevant specifications. Unit project, CRB550 steel company, monitors the quality of the project should be based on characteristics of the main specifications supervision and sampling. Cold-rolled ribbed steel bars: cold-rolled ribbed steel bars entering test, CRB550 steel sales, after inspection before use. First the appearance quality inspection, surface inspection cold-rolled ribbed steel bars or other damage should not have defects affect; and then measuring its thickness rolled flat pitch, weight bias; finally cold rolled ribbed bar in each batch randomly selected three, CRB550 steel, with two tensile test, a cold bending test. By experiment, cold-rolled ribbed steel bars, batch testing are in line with regulatory requirements.