钢筋外径及重量公称直径重量计算直径螺纹钢外径面积(mm)(kg/m)(mm)(mm)cm^2---------------------------------------60.222670.282780.39589.30.5027100.6171011.60.7854120.8881213.91.1310141.211416.21.5390161.581618.42.0110182.001820.52.5450202.472022.73.1420222.982225.13.8010253.852528.44.9090284.832831.66.1580326.313235.88.0420367.993640.210.1800409.874045.112.57005015.425054.919.64001)公称直径范围及推荐直径钢筋的公称直径范围为625mm，标准推荐的钢筋公称直径为681012141618202225324050mm;内径为5.87.79.611.513.415.417.319.321.324.231.038.48.5
