A.钢筋混凝土结构用钢 B.钢丝 C.钢绞线 D.钢筋、钢丝、钢绞线
A.热轧钢板 B.钢带 C.型钢 D.热轧钢板、钢带、型钢
A.0.58~0.63 B.0.65~0.70 C.0.70~0.75 D.0.75~0.80
A.A B.B C.C D.Z
A.0.35~0.45 B.0.55~0.65 C.0.65~0.75 D.0.75~0.85