钢筋外径、内径、每米重( 原北京公规院的制图规数据表定 ) 钢筋直径 mm 单根面积 钢筋外径 mm 钢筋内径 mm 钢筋每cm2米重 kg 60.2836.85.8 0.22270.3857.86.8 0.30280.5039.07.5 0.39590.63610.08.5 0.499100.78511.39.3 0.617121.13113.011.0 0.888141.53915.513.0 1.210162.01117.515.0 1.580182.54520.017.0 2.000203.14222.019.0 2.470223.80124.021.0 2.980254.90927.024.0 3.850286.15830.026.5 4.830328.04234.530.5 6.3103610.17939.534.5 7.9904012.56643.538.5 9.870专业资料 学习资料 教育培训 考试 建筑装潢资料