收藏词条 编辑词条 热轧六角钢和八角钢（GB/T705-1989）
热轧六角钢和八角钢(GB/T705-1989)
见表1
表1 热轧六角钢和八角钢的尺寸规格
|
对边距离s/mm |
允许偏差/mm |
截面面积/cm2 |
理论质量(kg/m) |
||||
|
1组 |
2组 |
3组 |
六角钢 |
八角钢 |
六角钢 |
八角钢 |
|
|
8 |
±O.25 |
±0.35 |
±O.40 |
O.5543 |
|
0.435 |
|
|
9 |
O.7015 |
|
0.551 |
|
|||
|
10 |
0.866 |
|
0.680 |
|
|||
|
11 |
1.048 |
|
0.823 |
|
|||
|
12 |
1.247 |
|
O.979 |
|
|||
|
13 |
1.464 |
|
1.15 |
|
|||
|
14 |
1.697 |
|
1.33 |
|
|||
|
15 |
1.949 |
|
1.53 |
|
|||
|
16 |
2.217 |
2.120 |
1.74 |
1.66 |
|||
|
17 |
2.503 |
|
1.96 |
|
|||
|
18 |
2.806 |
2.683 |
2.20 |
2.16 |
|||
|
19 |
3.126 |
|
2.45 |
|
|||
|
20 |
3.464 |
3.312 |
2.72 |
2.60 |
|||
|
21 |
±O.30 |
±O.40 |
±0.50 |
3.819 |
|
3.00 |
|
|
22 |
4.192 |
4.008 |
3.29 |
3.15 |
|||
|
23 |
4.581 |
|
3.60 |
|
|||
|
24 |
4.988 |
|
3.92 |
|
|||
|
25 |
5.413 |
5.175 |
4.25 |
4.06 |
|||
|
26 |
5.854 |
|
4.60 |
|
|||
|
27 |
6.314 |
|
4.96 |
|
|||
|
28 |
6.790 |
6.492 |
5.33 |
5.10 |
|||
|
30 |
7.794 |
7.452 |
6.12 |
5.85 |
|||
|
32 |
±O.40 |
±O.50 |
±0.60 |
8.868 |
8.479 |
6.96 |
6.66 |
|
34 |
1 O.011 |
9.572 |
7.86 |
7.51 |
|||
|
36 |
11.223 |
10.731 |
8.81 |
8.42 |
|||
|
38 |
12.505 |
11.956 |
9.82 |
9.39 |
|||
|
40 |
13.86 |
13.25 |
10.88 |
10.40 |
|||
|
42 |
±0.40 |
±O.50 |
±O.60 |
15.28 |
|
11.99 |
|
|
45 |
17.54 |
|
13.77 |
|
|||
|
48 |
19.95 |
|
15.66 |
|
|||
|
50 |
21.65 |
|
17.00 |
|
|||
|
53 |
24.33 |
|
19.10 |
|
|||
|
56 |
27.16 |
|
21.32 |
|
|||
|
58 |
29.13 |
|
22.87 |
|
|||
|
60 |
±O.60 |
±0.70 |
±O.80 |
31.18 |
|
24.50 |
-- |
|
63 |
34.37 |
|
26.98 |
|
|||
|
65 |
36.59 |
|
28.72 |
|
|||
|
68 |
40.04 |
|
31.43 |
|
|||
|
70 |
42.43 |
|
33.30 |
|
|||
注：1.表列理论质量系按密度7.85g/cm3计算的。
2.钢的通常长度为：普通钢3～8m，优质钢2～6m。