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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/cm3 mm O.8O.348O.273O.0739O.123 12 1.004230.332O.0873O.146 1.0 0.503O.3940.144O.206 14 O.712O.559O.1920.274 1.5 1.OO.583O.458O.222O.278 16 1.5O.8320.653O.300O.374 1.O0.663O.521O.324O.360 181.50.9520.747O.442O.491 2.O1.21O.9520.5350.595 1.0O.7430.583O.4530453 1.51.07O.8410.624O.624 20 2.01.371.08O.763O.763 2.51.641.29O.874O.874 1O.823O.646O.612O.556 221.51.19O.9360.850O.773 21.531.201.05O.953 2.51.841.451.211.10 2.52.141.681.861.49 25 32.491.952.081.57 2.52.642.083.412.27 33.012.423.862.58 30 3.53.502.754.252.83 43.893.054.583.05 2.52.842.234.212.63 3233.332.614.793.00 3.53782.975.293.31 3244.213.305.733.58 2.53.142.475.543.22 33.692.896.453.68 353.54.203.307.164.09 44.683.687.784.45 55.584.388.795.02 2.53.242.556.183.43 33.812.997.073.93 363.54.3_43.4l7.874.37 44.853.8l8.564.76 55.754.539.705.39 2.53.642.868.684.34 34.293.379.984.99 3.54.903.8511.165.58 40 45.494.3l12.216.1l 56.585.1613.986.99 67.555.9315.347.67 2.53.843.0210.154.83 42 34.533.5511.705.57 3.55.184.0713.106.24 45.814.5614.376.84 56.985.4816.567.87 68.036.3018.228.58 3.55.604.4016.437.30 4546.234.9418.078.03 57.585.9520.909.29 68.756.8723.19lO.31 4579.817.8024.9711.10 810.88.4426.3011.59 47.095.5625.5610.22 58.586.7329.8111.93 5069.957.8l33.3513.34 711.218.8036.2314.49 812.359.7038.5115.41 47.896.1934.8712.58 59.587.5240.9514.89 55611.158.7546.1316.77 712.519.9050.4718.35 813.9510.9554.0419.65 48.696.8246.2115.4 510.588.3054.5718.19 60612.359.6961.8220.61 714.0l11.0068.0322.68 815.5512.2173.2824.43 49.497.4559.7818.39 511.589.0770.9221.82 65 613.5510.6480.7224.84 715.4112.1089.2727.46 817.1513.4796.6429.74 410.298.0875.7821.65 70512.589.8790.2625.79 614.711.58103.129.47 716.8113.19114.532.72 70 818.7514.72124.535.57 411.098.7094.425.17 513.5810.66112.830.08 75615.9512.52129.434.50 7182114.29144.238.44 820.3515.98157.341.94 411.899.