Construction Points cold-rolled ribbed steel bars: cold-rolled ribbed steel bars are generally based on engineering needs length straight bundles supply, the mechanical properties and process performance should be approved sampling. Each batch should be the same manufacturer, same size, same sources of raw materials, the same composition rolled steel production process CRB550 straight steel company, and not more than 10t. Each batch quality certificate of steel should be manufactured CRB550 straight rebar sales, each bundle should sign. Construction Points cold-rolled ribbed steel bars: cold-rolled ribbed steel processing. After straightening machine straighten straight steel reinforcement CRB550 wholesale, no obvious scratches the surface; Reinforced straight after should have local bending, bending of straight bars per meter and the total length should not exceed thousandths IV. Tolerance cold rolled ribbed steel processing: Length of the reinforced ± 10mm, inner stirrup net size ± 5mm.