| (一）圆钢规格、重量表[冶标（YB）158-63] | ||||||
| 直径(mm) | 截面面积 (cm2) | 理论重量(kg/m) | 直径(mm) | 截面面积 (cm2) | 理论重量(kg/m) | |
| 5 | 0.1963 | 0.154 | 45 | 15.90 | 12.48 | |
| 5.6 | 0.2463 | 0.193 | 48 | 18.10 | 14.21 | |
| 6 | 0.2827 | 0.222 | 50 | 19.64 | 15.42 | |
| 6.3 | 0.3117 | 0.245 | 53 | 22.06 | 17.32 | |
| 7 | 0.3848 | 0.302 | 56 | 24.63 | 19.33 | |
| 8 | 0.5027 | 0.395 | 60 | 28.27 | 22.19 | |
| 9 | 0.6359 | 0.499 | 63 | 31.17 | 24.47 | |
| 10 | 0.7854 | 0.617 | 65 | 33.18 | 26.05 | |
| 11 | 0.9503 | 0.746 | 70 | 38.48 | 30.21 | |
| 12 | 1.131 | 0.888 | 75 | 44.18 | 34.68 | |
| 13 | 1.327 | 1.04 | 80 | 50.27 | 39.46 | |
| 14 | 1.539 | 1.21 | 85 | 56.75 | 44.55 | |
| 15 | 1.767 | 1.39 | 90 | 63.62 | 49.94 | |
| 16 | 2.011 | 1.58 | 95 | 70.88 | 55.64 | |
| 17 | 2.270 | 1.78 | 100 | 78.54 | 61.65 | |
| 18 | 2.545 | 2.00 | 105 | 86.59 | 67.97 | |
| 19 | 2.835 | 2.23 | 110 | 95.03 | 74.60 | |
| 20 | 3.142 | 2.47 | 120 | 113.10 | 88.78 | |
| 21 | 3.464 | 2.72 | 125 | 122.72 | 96.33 | |
| 22 | 3.801 | 2.98 | 130 | 132.73 | 104.20 | |
| 24 | 4.524 | 3.55 | 140 | 153.72 | 120.84 | |
| 25 | 4.909 | 3.85 | 150 | 176.72 | 138.72 | |
| 26 | 5.809 | 4.17 | 160 | 201.06 | 157.83 | |
| 28 | 6.158 | 4.83 | 170 | 226.98 | 178.18 | |
| 30 | 7.069 | 5.55 | 180 | 254.47 | 199.76 | |
| 32 | 8.042 | 6.31 | 190 | 283.53 | 222.57 | |
| 34 | 9.079 | 7.13 | 200 | 314.16 | 246.62 | |
| 36 | 10.18 | 7.99 | 210 | 346.36 | 271.89 | |
| 38 | 11.34 | 8.90 | 220 | 380.13 | 298.40 | |
| 40 | 12.57 | 9.87 | 240 | 452.39 | 355.13 | |
| 42 | 13.85 | 10.87 | 250 | 490.88 | 385.84 | |
注 圆钢的长度规定如下:
A.通常长度（非定尺的）
普通钢：
直径≤25mm ……………………………………………………………………………………….长5~10m
直径26~48mm ….…………………………………………………………………………………..长4~9m
直径50~110mm ….…………………………………………………………………………………长4~8m
直径≥120mm ….…………………………………………………………………………………..长3~6m
优质钢：
各种直径 ….………………………………………………………………………………………..长2~6m
B.定尺长度（合同中确定）
C.倍尺长度（合同中确定）
短尺圆钢的交货数量不得超过一批订货总量的10%。普通钢短尺不短于2.5m，优质钢短尺不短于1.5m。