型号 外径 壁厚 截面面积 重量 外表面积 I W mm mm mm cm^2 kg/m m^2/m cm^4 cm^3 30x2 30 2 1.759 1.381 0.094 1.730 1.15 30x2.5 30 2.5 2.160 1.695 0.094 2.060 1.37 34x2 34 2 2.011 1.578 0.107 2.580 1.52 34x2.5 34 2.5 2.474 1.942 0.107 3.090 1.82 38x2 38 2 2.262 1.776 0.119 3.680 1.94 38x2.5 38 2.5 2.788 2.189 0.119 4.410 2.32 38x3 38 3 3.299 2.589 0.119 5.090 2.68 38x3.5 38 3.5 3.793 2.978 0.119 5.700 3.00 40x2 40 2 2
1,槽80x40x15x2.0,80,40,15,2,14.52,33.6,347,341600,77900,462,112900000 2,槽100x50x15x2.5,100,50,15,2.5,17.06,39.4,523,813400,171900,1090,352800000 3,槽120x50x20x2.5,120,50,20,2.5,17.06,40.3,598,1294000,209600,1246,660900000 4,槽120x60x20x3.0,120,60,20,3,21.06,48.7,765,1706800,373600,2296,1153200000 5,槽140x60x20x3.0,140,60,20,3,19.64,46.1,825,2454200,394900,2476,1589800000 6,槽150x50x20x1.6,150,50,2
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