有很多人把A2，AY2，Q215，Q195误判为2级钢筋，并按2级钢筋使用。有的把2级钢筋中混杂有非2级钢筋的所谓混批钢筋都误判为2级钢筋。这些牌号的钢筋屈服点抗拉强度均低于2级钢筋的10％左右。如在建筑工程中使用，相当于比工程设计图少放了10％左右的受力钢筋，这样势必降低工程 A lot of people misjudge A2, AY2, Q215, Q195 as Grade 2 reinforcing bars and use Grade 2 reinforcing bars. Some of the 2 reinforced mixed with non-2-level reinforcement of the so-called mixed batch of steel are mistaken for grade 2 steel. These grades of steel yield point tensile strength are lower than 10% of grade 2 steel. As used in construction projects, the equivalent of less than 10% of the engineering drawings placed by the force of steel, it is bound to reduce the project