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(1)尺寸规格见表6—40-表6—45。表6-40冷拔无缝方形钢管的尺寸规格基本尺寸AS截面面积F/cm2理论质量G/(kg/m)惯性矩Jx=Jy/cm4截面系数Wx=Wy/cm3mmO.8O.348O.273O.0739O.123121.004230.332O.0873O.1461.00.503O.3940.144O.20614O.712O.559O.1920.2741.51.OO.583O.458O.222O.278161.5O.8320.653O.300O.3741.O0.663O.521O.324O.360181.50.9520.747O.442O.4912.O1.21O.9520.5350.5951.0O.7430.583O.45304531.51.07O.8410.624O.624202.01.371.08O.763O.7632.51.641.29O.874O.8741O.823O.646O.612O.556221.51.19O.9360.850O.77321.531.201.05O.9532.51.841.451.211.102.52.141.681.861.492532.491.952.081.572.52.642.083.412.2733.012.423.862.58303.53.502.754.252.8343.893.054.583.052.52.842.234.212.633233.332.614.793.003.53782.975.293.313244.213.305.733.582.53.142.475.543.2233.692.896.453.68353.54.203.307.164.0944.683.687.784.4555.584.388.795.022.53.242.556.183.4333.812.997.073.93363.54.3_43.4l7.874.3744.853.8l8.564.7655.754.539.705.392.53.642.868.684.3434.293.379.984.993.54.903.8511.165.584045.494.3l12.216.1l56.585.1613.986.9967.555.9315.347.672.53.843.0210.154.834234.533.5511.705.573.55.184.0713.106.2445.814.5614.376.8456.985.4816.567.8768.036.3018.228.583.55.604.4016.437.304546.234.9418.078.0357.585.9520.909.2968.756.8723.19lO.314579.817.8024.9711.10810.88.4426.3011.5947.095.5625.5610.2258.586.7329.8111.935069.957.8l33.3513.34711.218.8036.2314.49812.359.7038.5115.4147.896.1934.8712.5859.587.5240.9514.8955611.158.7546.1316.77712.519.9050.4718.35813.9510.9554.0419.6548.696.8246.2115.4510.588.3054.5718.1960612.359.6961.8220.61714.0l11.0068.0322.68815.5512.2173.2824.4349.497.4559.7818.39511.589.0770.9221.8265613.5510.6480.7224.84715.4112.1089.2727.46817.1513.4796.6429.74410.298.0875.7821.6570512.589.8790.2625.79614.711.58103.129.47716.8113.19114.532.7270818.7514.72124.535.57411.098.7094.425.17513.5810.66112.830.0875615.9512.52129.434.507182114.29144.238.44820.3515.98157.341.94411.899.33115.928.96514.5811.44138.934.7280617.1513.46159.739.93719.6115.39178.544.63821.9517.23195.448.85516.9813.33217.147.19620.0315.72251.154.59722.9718.03282.361.38825.7920.25310.967.58518.