钢绞线是由多根钢丝绞合构成的钢铁制品，碳钢表面可以根据需要增加镀锌层、锌铝合金层、包铝层、镀铜层、涂环氧树脂等。
钢绞线中的钢丝一般为7根，也有2根、3根及19根，钢丝上可以有金属或非金属的防腐层。镀锌钢绞线通常指用于承力索、拉线、加强芯等，也可以作为架空输电的地线、公路两边的阻拦索或建筑结构中的结构索。
结构 | 钢丝 mm | 钢绞线 mm | 全部钢丝 断面面积 | 公称抗拉强度/MPa | 参考重量 Kg/100m | ||||
1175 | 1270 | 1370 | 1470 | 1570 | |||||
钢绞线最小破坏断拉力/kN | |||||||||
1×7 | 1.60 | 4.8 | 14.07 | 16.53 | 17.87 | 19.28 | 20.68 | 22.09 | 11.17 |
1.80 | 5.4 | 17.81 | 20.93 | 22.62 | 24.40 | 26.18 | 27.96 | 14.14 | |
2.00 | 6.0 | 21.99 | 25.84 | 27.93 | 30.13 | 32.32 | 34.52 | 17.46 | |
2.20 | 6.6 | 26.60 | 31.26 | 33.78 | 36.44 | 39.10 | 41.76 | 22.77 | |
2.30 | 6.9 | 29.08 | 34.17 | 36.93 | 39.84 | 42.75 | 45.66 | 23.09 | |
2.60 | 7.8 | 37.17 | 43.60 | 47.20 | 50.92 | 54.63 | 58.30 | 29.51 | |
2.90 | 8.7 | 46.24 | 54.33 | 58.72 | 63.36 | 67.97 | 72.60 | 36.71 | |
3.00 | 9.0 | 49.48 | 58.14 | 62.84 | 67.79 | 72.74 | 77.68 | 42.38 | |
3.20 | 9.6 | 56.30 | 66.15 | 71.50 | 77.13 | 82.76 | 88.39 | 44.70 | |
3.50 | 10.5 | 67.35 | 79.14 | 85.85 | 92.27 | 99.00 | 105.74 | 53.48 | |
3.80 | 11.4 | 79.39 | 93.28 | 100.82 | 108.76 | 116.70 | 124.64 | 63.04 | |
结构 | 钢丝 mm | 钢绞线 mm | 全部钢丝 断面面积 | 公称抗拉强度/MPa | 参考重量 Kg/100m | ||||
1175 | 1270 | 1370 | 1470 | 1570 | |||||
钢绞线最小破坏断拉力/kN | |||||||||
1×19 | 1.60 | 8.0 | 38.2 | 44.88 | 48.51 | 52.38 | 56.15 | 59.97 | 30.40 |
1.80 | 9.0 | 48.35 | 56.81 | 61.40 | 66.24 | 71.07 | 75.91 | 38.49 | |
2.00 | 10.0 | 59.69 | 70.14 | 75.81 | 81.77 | 87.74 | 93.71 | 47.51 | |
2.20 | 11.6 | 72.22 | 84.86 | 91.71 | 98.94 | 106.16 | 113.39 | 56.69 | |
2.30 | 11.5 | 78.94 | 92.75 | 100.25 | 108.15 | 116.04 | 123.94 | 62.84 | |
2.60 | 13.0 | 100.88 | 118.53 | 125.12 | 138.20 | 148.29 | 158.38 | 80.30 | |
2.90 | 14.5 | 125.50 | 147.46 | 159.38 | 171.93 | 184.48 | 197.03 | 99.90 | |
3.00 | 15.0 | 134.30 | 157.80 | 170.56 | 183.99 | 197.42 | 210.85 | 105.43 | |
3.20 | 16.0 | 152.81 | 179.55 | 194.06 | 209.35 | 224.63 | 239.91 | 121.64 | |
