Cold-rolled ribbed steel structure design elements: concrete strength selection. For reinforced concrete structures in a class environment, the concrete strength grade of not less than C20, for in two, three reinforced concrete structures wholesale environment 12mm cold-rolled steel wire rod, its concrete strength not less than C30; For kitchens, bathrooms and other damp indoor environment sector, due to its small size 12mm cold-rolled plate steel wire rod plant, as it is less than C30 concrete strength when 12mm cold-rolled steel wire rod prices may not be directly used HPB235 CRB550 grade steel grade steel. Cold-rolled ribbed steel structure design points: The minimum reinforcement ratio selection. Due to the design value of the tensile strength of steel CRB550 level is 1.71 times the HPB235 grade steel, when the reinforced concrete structure using CRB550 grade steel, can be reduced by a minimum configuration of steel reinforcement ratio. Thus greatly reducing the total amount of reinforcing steel and steel consumption. Seismic housing height should be higher than the current maximum applicable national standard "design of concrete structures." Buying 12mm cold-rolled steel wire rod | Cold rolled steel wire rod | Ding Ding Ding Ding cold rolled by Industrial Co., Ltd., Henan Province. Ding Ding Industrial Co., Ltd., Henan Province (www.hnddsy.com) strong, credible, and other industries in other Anyang accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Dingding cold rolling and you hand into the brilliant, for a better future!