外径(毫米) |
壁 厚(毫米) | ||||||||||
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
6 |
6.5 |
7 |
7.5 | |
理 论 重 量 (公斤/米) | |||||||||||
121 |
- |
- |
- |
11.54 |
12.93 |
14.30 |
15.67 |
17.02 |
18.35 |
19.68 |
20.99 |
127 |
- |
- |
- |
12.13 |
13.59 |
15.04 |
16.48 |
17.90 |
19.32 |
20.72 |
22.10 |
133 |
- |
- |
- |
12.73 |
14.26 |
15.78 |
17.29 |
18.79 |
20.28 |
21.75 |
23.21 |
140 |
- |
- |
- |
- |
15.04 |
16.65 |
18.24 |
19.83 |
21.40 |
22.96 |
24.51 |
146 |
- |
- |
- |
- |
15.70 |
17.39 |
19.06 |
20.72 |
22.36 |
24.00 |
25.62 |
152 |
- |
- |
- |
- |
16.37 |
18.13 |
19.87 |
21.60 |
23.32 |
25.03 |
26.73 |
159 |
- |
- |
- |
- |
17.15 |
18.99 |
20.82 |
22.64 |
24.45 |
26.24 |
28.02 |
168 |
- |
- |
- |
- |
- |
20.10 |
22.04 |
23.97 |
25.89 |
27.79 |
29.69 |
180 |
- |
- |
- |
- |
- |
21.59 |
23.70 |
25.75 |
27.70 |
29.87 |
31.91 |
194 |
- |
- |
- |
- |
- |
23.31 |
25.60 |
27.82 |
30.00 |
32.28 |
34.50 |
203 |
- |
- |
- |
- |
- |
- |
- |
29.14 |
31.50 |
33.83 |
36.16 |
219 |
- |
- |
- |
- |
- |
- |
- |
31.52 |
34.06 |
36.60 |
39.12 |
245 |
- |
- |
- |
- |
- |
- |
- |
- |
38.23 |
41.09 |
43.85 |
273 |
- |
- |
- |
- |
- |
- |
- |
- |
42.64 |
45.92 |
49.10 |
299 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
53.91 |
325 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
58.74 |
但是,圆管也有一定的局限性,如在受平面弯曲的条件下,圆管就不如方、矩形管抗弯强度大,一些农机具骨架、钢木家具等就常用方、矩形管。根据不同用途还需有其他截面形状的异型钢管。