热轧圆钢和方钢的理论重量

热轧圆钢和方钢的尺寸规格

精度组别 直径d (或边长a) ／mm 允许偏差／mm 5.5 6 ±0.20 ±0.30 6.5 7 8 9 10 *11 12 13 14 15 16 17 18 19 20 21 22 *23 ±. 30 24 25 26

±. 40 ±. 50 4.524 4.909 5.309 5.76 6.25 6.76 3.55 3.85 4.17 4.52 4.91 5.31 ±0.25 ±0.35 ±0.40 ±0.40 0.3318 0.3848 0.5077 0.6362 0.78 0.9503 1.131 1.327 1.539 1.767 2.011 2.270 2.5 2.835 3.142 3.4 3.801 4.155 0.42 0.49 0. 0.81 1.0 1.21 1.44 1.69 1.96 2.25 2.56 2. 3.24 3.61 4.00 4.41 4.84 5.29 0.260 0.302 0.395 0.499 0.617 0.746 0.888 1.04 1.21 1.39 1.58 1.78 2.00 2.23 2.47 2.72 2.98 3.26 0.332 0.385 0.502 0.636 0.785 0.95 1.13 1.33 1. 1.77 2.01 2.27 2. 2.83 3.14 3.46 3.80 4.15 ..2375 0.2827 0.30 0.36 0.186 0.222 0.237 0.283 1组 2组 3组 圆 钢 方 钢 圆 钢 方 钢 截面面积／cm² 理论质量(kg／m)

*27 28 *29 30 *31 32 *33 34 *35 36 ±0.40 ±0.50 38 40 42 45 48 50 53 *55 ±0.60 56 *58 60 63 *65 *68 70 75 80 ±. 60 ±. 70 ±0.80 ±. 70 ±0.80 ±0.60 5.726 6.158 6.605 7.069 7.8 8.042 8.553 9.097 9.621 10.18 11.34 12.57 13.85 15.90 18.10 19. 22.06 23.76 24.63 26.42 28.27 31.17 33.18 36.32 38.48 44.18 50.27 7.29 7.84 8.41 9.00 9.61 10.24 10. 11.56 12.25 12.96 14.44 16.00 17. 20.25 23.04 25.00 28.09 30.25 31.36 33. 36.00 39.69 42.25 46.24 49.00 56.25 .00 4.49 4.83 5.18 5.55 5.93 6.31 6.71 7.13 7.55 7.99 8.90 9.86 10.9 12.5 14.2 15.4 17.3 18.6 19.3 20.7 22.2 24.5 26.. 28.5 30.2 34.7 39.5 5.72 6.15 6.60 7.06 7. 8.04 8.55 9.07 9.62 10.2 11.3 12.6 13.8 15.9 18.1 19.6 22.. 23.7 24.6 26.4 28.3 31.2 33.2 36.3 38.5 44.2 50.2

85 90 95 ±. 9 100 105 110 115 120 125 ±1.2 130 140 150 160 170 - 180 190 200 220 250 - - ±2.5 - ±2.0 ±1.3 ±1.4 ±1.0 ±1.1 56.75 63.62 70.88 78. 86.59 95.03 103.82 113.10 122.72 132.73 153.94 176.72 201.06 226.98 2.47 283.53 314.16 380.13 490.88 72.25 81.00 90.25 100.00 110.25 121.00 132.26 144.00 156.25 169.00 196.00 225.00 256.00 2.00 324.00 361.00 400.00 - - 44.5 49.9 55.6 61.7 68.0 74.6 81.5 88.8 96.3 104 121 139 158 178 200 223 247 298 385 56.7 63.6 70.8 78.5 86.5 95.0 104 113 123 133 1 177 201 227 2 283 314 - -