方钢圆钢尺寸-重量-厚度偏差规范.doc

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1、圆钢与方钢尺寸、外形、厚度理论范围允许偏差、重量允许偏差rolledroundandsquaresteelbars—Dimension，shape，weightandtolerance说明：此规范根据中华人民共和国国家标准GJ/G709-2014《圆钢与方钢的尺寸、 外形、重量及允许偏差》，结合我们钢材贸易商的实际使用情况做了一些补充，对国家标准毫无影响。1、范围：本标准规定了圆钢与方钢的截面形状、截面特性、理论重量允许偏差、尺寸允许偏差、厚度允许偏差及高频焊钢规格等。2、截面形状：3、截面特性d或a/mm圆钢方钢截面面积/cm2每米重量/kg/m截面

2、特性截面面积/cm2每米重量/kg/m截面特性I/cm4W/cm3i/cmIx/cm4Wx/cm3ix/cm5.50.2380.1870.00450.01630.1380.3030.2370.00760.02770.15960.2830.2220.00630.02120.150.360.2830.01080.0360.1736.50.3320.260.00880.0270.1630.4230.3320.01490.04580.18870.3850.3020.01180.03370.1750.490.3850.020.05720.20280.5030.3

3、950.02010.05030.20.640.5020.03410.08530.23190.6360.4990.03220.07160.2250.810.6360.05470.12150.26100.7850.6170.04910.09820.2510.7850.08330.16670.289110.950.7460.07190.13070.2751.210.950.1220.22180.318121.1310.8880.10180.16960.31.441.130.17280.2880.346131.3271.0420.14020.21570.325

4、1.691.3270.2380.36620.375141.5391.2080.18860.26940.351.961.5390.32010.45730.404151.7671.3870.24850.33130.3752.251.7660.42190.56250.433162.0111.5780.32170.40210.42.562.010.54610.68270.462172.271.7820.410.48230.4252.892.2690.6960.81880.491182.5451.9980.51530.57260.453.242.5430.874

5、80.9720.52192.8352.2260.63970.67340.4753.612.8341.0861.1430.548203.1422.4660.78540.78540.543.141.3331.3330.577213.4642.7190.95470.90920.5254.413.4621.6211.5440.606223.8012.9841.151.0450.554.843.7991.9521.7750.635234.1553.2611.3741.1940.5755.294.1532.3322.0280.664244.5243.5511.62

6、91.3570.65.764.5222.7652.3040.693254.9093.8531.9171.5340.6256.254.9063.2552.6040.722265.3094.1682.2431.7260.656.765.3073.8082.9290.751275.7264.4952.6091.9320.6757.295.7234.4293.2810.779286.1584.8343.0172.1550.77.846.1545.1223.6590.808296.6055.1853.4722.3940.7258.416.5945.8944.06

7、50.837307.0695.5493.9762.6510.7597.0656.754.50.866317.5485.9254.5332.9250.7759.617.5447.6964.9650.895328.0426.3135.1473.2170.810.248.0388.7385.4610.924338.5536.7145.8213.5280.82510.898.5499.8835.990.953349.0797.1276.563.8590.8511.569.07511.146.5510.981359.6217.5537.3664.2090.875

8、12.259.61612.517.1461.013610.187.998.2454.580.9