| 边长（mm) |
截面面积(cm2) |
理论重量 (kg/m) |
边长（mm) |
截面面积(cm2) |
理论重量(kg/m) |
|
| 5 |
0.25 |
0.196 |
30 |
9.00 |
7.06 |
|
| 6 |
0.36 |
0.283 |
32 |
10.24 |
8.04 |
|
| 7 |
0.49 |
0.385 |
34 |
11.56 |
9.07 |
|
| 8 |
0.64 |
0.502 |
36 |
12.96 |
10.17 |
|
| 9 |
0.81 |
0.636 |
38 |
14.44 |
11.24 |
|
| 10 |
1.00 |
0.785 |
40 |
16.00 |
12.56 |
|
| 11 |
1.21 |
0.95 |
42 |
17.64 |
13.85 |
|
| 12 |
1.44 |
1.13 |
45 |
20.25 |
15.90 |
|
| 13 |
1.69 |
1.33 |
48 |
23.04 |
18.09 |
|
| 14 |
1.96 |
1.54 |
50 |
25.00 |
19.63 |
|
| 15 |
2.25 |
1.77 |
53 |
28.09 |
22.05 |
|
| 16 |
2.56 |
2.01 |
56 |
31.36 |
24.61 |
|
| 17 |
2.89 |
2.27 |
60 |
36.00 |
28.26 |
|
| 18 |
3.24 |
2.54 |
63 |
39.69 |
31.16 |
|
| 19 |
3.61 |
2.82 |
65 |
42.25 |
33.17 |
|
| 20 |
4.00 |
3.14 |
70 |
49.00 |
38.49 |
|
| 21 |
4.41 |
3.46 |
75 |
56.25 |
44.16 |
|
| 22 |
4.84 |
3.80 |
80 |
64.00 |
50.24 |
|
| 24 |
5.76 |
4.52 |
85 |
72.25 |
56.72 |
|
| 25 |
6.25 |
4.91 |
90 |
81.00 |
63.59 |
|
| 26 |
6.76 |
5.30 |
95 |
90.25 |
70.85 |
|
| 28 |
7.84 |
6.15 |
100 |
100.00 |
78.50 |
