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热轧圆钢和方钢的尺寸规格(摘自GB/T 702-2004)
注:1.表中的理论重量是按钢的密度7.85g/cm^3计算的。
2.表中带“*”的规格,不推荐使用。
直径d(或边长a)/mm | 精度允许偏差/mm | 圆钢理论重量(kg/m) | 方钢理论重量(kg/m) | ||
---|---|---|---|---|---|
1组 | 2组 | 3组 | |||
5.5 | ±0.20 | ±0.30 | ±0.40 | 0.186 | 0.237 |
6 | ±0.20 | ±0.30 | ±0.40 | 0.222 | 0.283 |
6.5 | ±0.20 | ±0.30 | ±0.40 | 0.260 | 0.332 |
7 | ±0.20 | ±0.30 | ±0.40 | 0.302 | 0.385 |
8 | ±0.25 | ±0.35 | ±0.40 | 0.395 | 0.502 |
9 | ±0.25 | ±0.35 | ±0.40 | 0.499 | 0.636 |
10 | ±0.25 | ±0.35 | ±0.40 | 0.617 | 0.785 |
11 | ±0.25 | ±0.35 | ±0.40 | 0.746 | 0.85 |
12 | ±0.25 | ±0.35 | ±0.40 | 0.888 | 1.13 |
13 | ±0.25 | ±0.35 | ±0.40 | 1.04 | 1.33 |
14 | ±0.25 | ±0.35 | ±0.40 | 1.21 | 1.54 |
15 | ±0.25 | ±0.35 | ±0.40 | 1.39 | 1.77 |
16 | ±0.25 | ±0.35 | ±0.40 | 1.58 | 2.01 |
17 | ±0.25 | ±0.35 | ±0.40 | 1.78 | 2.27 |
18 | ±0.25 | ±0.35 | ±0.40 | 2.00 | 2.54 |
19 | ±0.25 | ±0.35 | ±0.40 | 2.23 | 2.83 |
20 | ±0.25 | ±0.35 | ±0.40 | 2.47 | 3.14 |
21 | ±0.30 | ±0.40 | ±0.50 | 2.72 | 3.46 |
22 | ±0.30 | ±0.40 | ±0.50 | 2.98 | 3.80 |
23 | ±0.30 | ±0.40 | ±0.50 | 3.26 | 4.15 |
24 | ±0.30 | ±0.40 | ±0.50 | 3.55 | 4.52 |
25 | ±0.30 | ±0.40 | ±0.50 | 3.85 | 4.91 |
26 | ±0.30 | ±0.40 | ±0.50 | 4.17 | 5.31 |
27 | ±0.30 | ±0.40 | ±0.50 | 4.49 | 5.72 |
28 | ±0.30 | ±0.40 | ±0.50 | 4.83 | 6.15 |
29 | ±0.30 | ±0.40 | ±0.50 | 5.18 | 6.60 |
30 | ±0.30 | ±0.40 | ±0.50 | 5.55 | 7.06 |
31 | ±0.40 | ±0.50 | ±0.60 | 5.93 | 7.54 |
32 | ±0.40 | ±0.50 | ±0.60 | 6.31 | 8.04 |
33 | ±0.40 | ±0.50 | ±0.60 | 6.71 | 8.55 |
34 | ±0.40 | ±0.50 | ±0.60 | 7.13 | 9.07 |
35 | ±0.40 | ±0.50 | ±0.60 | 7.55 | 9.62 |
36 | ±0.40 | ±0.50 | ±0.60 | 7.99 | 10.2 |
38 | ±0.40 | ±0.50 | ±0.60 | 8.90 | 11.3 |
40 | ±0.40 | ±0.50 | ±0.60 | 9.86 | 12.6 |
42 | ±0.40 | ±0.50 | ±0.60 | 10.9 | 13.8 |
45 | ±0.40 | ±0.50 | ±0.60 | 12.5 | 15.9 |
48 | ±0.40 | ±0.50 | ±0.60 | 14.2 | 18.1 |
50 | ±0.40 | ±0.50 | ±0.60 | 15.4 | 19.6 |
53 | ±0.60 | ±0.70 | ±0.80 | 17.3 | 22.0 |
55 | ±0.60 | ±0.70 | ±0.80 | 18.6 | 23.7 |
56 | ±0.60 | ±0.70 | ±0.80 | 19.3 | 24.6 |
58 | ±0.60 | ±0.70 | ±0.80 | 20.7 | 26.4 |
60 | ±0.60 | ±0.70 | ±0.80 | 22.2 | 28.3 |
63 | ±0.60 | ±0.70 | ±0.80 | 24.5 | 31.2 |
65 | ±0.60 | ±0.70 | ±0.80 | 26.0 | 33.2 |
68 | ±0.60 | ±0.70 | ±0.80 | 28.5 | 36.3 |
70 | ±0.60 | ±0.70 | ±0.80 | 30.2 | 38.5 |
75 | ±0.60 | ±0.70 | ±0.80 | 34.7 | 44.2 |
80 | ±0.60 | ±0.70 | ±0.80 | 39.5 | 50.2 |
85 | ±0.90 | ±1.00 | ±1.10 | 44.5 | 56.7 |
90 | ±0.90 | ±1.00 | ±1.10 | 49.9 | 63.6 |
95 | ±0.90 | ±1.00 | ±1.10 | 55.6 | 70.8 |
100 | ±0.90 | ±1.00 | ±1.10 | 61.7 | 78.5 |
105 | ±0.90 | ±1.00 | ±1.10 | 68.0 | 86.5 |
110 | ±0.90 | ±1.00 | ±1.10 | 74.6 | 95.0 |
115 | ±1.20 | ±1.30 | ±1.40 | 81.5 | 104 |
120 | ±1.20 | ±1.30 | ±1.40 | 88.8 | 113 |
125 | ±1.20 | ±1.30 | ±1.40 | 96.3 | 123 |
130 | ±1.20 | ±1.30 | ±1.40 | 104 | 133 |
140 | ±1.20 | ±1.30 | ±1.40 | 121 | 154 |
150 | ±1.20 | ±1.30 | ±1.40 | 139 | 177 |
160 | ±1.60 | ±1.80 | ±2.0 | 158 | 201 |
170 | ±1.60 | ±1.80 | ±2.0 | 178 | 227 |
180 | ±1.60 | ±1.80 | ±2.0 | 200 | 254 |
190 | ±1.60 | ±1.80 | ±2.0 | 223 | 283 |
200 | 公称尺寸的±1.0% | 公称尺寸的±1.2% | 公称尺寸的±1.3% | 247 | 314 |
220 | 公称尺寸的±1.0% | 公称尺寸的±1.2% | 公称尺寸的±1.3% | 298 | - |
250 | 公称尺寸的±1.0% | 公称尺寸的±1.2% | 公称尺寸的±1.3% | 385 | - |