Indian Standard IS: 1161-1998
Steel Tubes For Structural Purposes Conforming to IS : 1161 - 1998
NB
and
Series |
Outside
Diameter |
Thickness |
Nominal weight
of Black tubes
plain end |
Area of
Cross-Section |
Moment
Of Inertia |
Modulus
Of Section |
Radius of
Gyration |
| mm |
mm |
mm |
Kg/m |
M/ton |
cm |
cm4 |
cm³ |
cm |
| 15L |
21.3 |
2.00 |
0.947 |
1056 |
1.21 |
0.57 |
0.54 |
0.69 |
| M |
|
2.60 |
1.21 |
826 |
1.53 |
0.69 |
0.64 |
0.66 |
| H |
|
3.20 |
1.44 |
694 |
1.82 |
0.75 |
0.70 |
0.55 |
| |
|
|
|
|
|
|
|
|
| 20L |
26.9 |
2.30 |
1.38 |
725 |
1.78 |
1.36 |
1.01 |
0.87 |
| M |
|
2.60 |
1.56 |
641 |
1.98 |
1.48 |
1.10 |
0.86 |
| H |
|
3.20 |
1.87 |
535 |
2.38 |
1.70 |
1.26 |
0.84 |
| |
|
|
|
|
|
|
|
|
| 25L |
33.7 |
2.60 |
1.98 |
505 |
2.54 |
3.09 |
1.83 |
1.10 |
| M |
|
3.20 |
2.41 |
415 |
3.06 |
3.61 |
2.14 |
1.08 |
| H |
|
4.00 |
2.93 |
341 |
3.73 |
4.19 |
2.48 |
1.05 |
| |
|
|
|
|
|
|
|
|
| 32L |
42.4 |
2.60 |
2.54 |
394 |
3.25 |
6.47 |
3.05 |
1.41 |
| M |
|
3.20 |
3.10 |
323 |
3.94 |
7.62 |
3.59 |
1.39 |
| H |
|
4.00 |
3.79 |
264 |
4.82 |
8.99 |
4.24 |
1.36 |
| |
|
|
|
|
|
|
|
|
| 40L |
48.3 |
2.90 |
3.23 |
310 |
4.13 |
10.70 |
4.43 |
1.61 |
| M |
|
3.20 |
3.56 |
281 |
4.53 |
11.59 |
4.80 |
1.59 |
| H |
|
4.00 |
4.37 |
229 |
4.56 |
13.77 |
5.70 |
1.57 |
| |
|
|
|
|
|
|
|
|
| 50L |
60.3 |
2.90 |
4.08 |
245 |
5.23 |
21.59 |
7.16 |
2.03 |
| M |
|
3.60 |
5.03 |
199 |
6.41 |
25.88 |
8.58 |
2.00 |
| H |
|
4.50 |
6.19 |
162 |
7.88 |
30.90 |
10.20 |
1.98 |
| |
|
|
|
|
|
|
|
|
| 65L |
76.1 |
3.20 |
5.71 |
175 |
7.32 |
48.79 |
12.82 |
2.58 |
| M |
|
3.60 |
6.42 |
156 |
8.20 |
54.02 |
14.20 |
2.57 |
| H |
|
4.50 |
7.93 |
126 |
10.1 |
65.12 |
17.10 |
2.54 |
| |
|
|
|
|
|
|
|
|
| 80L |
88.9 |
3.20 |
6.72 |
149 |
8.61 |
79.23 |
17.82 |
3.03 |
| M |
|
4.00 |
8.36 |
120 |
10.7 |
96.36 |
21.68 |
3.00 |
| H |
|
4.80 |
9.90 |
101 |
12.7 |
112.52 |
25.31 |
2.98 |
| |
|
|
|
|
|
|
|
|
| 90L |
101.6 |
3.60 |
8.70 |
115 |
11.1 |
133.27 |
26.23 |
3.47 |
| M |
|
4.00 |
9.63 |
104 |
12.3 |
146.32 |
28.80 |
3.45 |
| H |
|
4.80 |
11.50 |
87 |
14.6 |
171.44 |
33.75 |
3.43 |
| |
|
|
|
|
|
|
|
|
| 100L |
114.3 |
3.60 |
9.75 |
103 |
12.5 |
192.03 |
33.60 |
3.92 |
| M |
|
4.50 |
12.20 |
82 |
15.5 |
234.30 |
41.00 |
3.89 |
| H |
|
5.40 |
14.50 |
69 |
18.5 |
274.50 |
48.00 |
3.85 |
| |
|
|
|
|
|
|
|
|
| 110L |
127.0 |
4.50 |
13.60 |
74 |
17.3 |
325.30 |
51.20 |
4.33 |
| M |
|
4.80 |
14.50 |
69 |
18.4 |
344.58 |
54.27 |
4.32 |
| H |
|
5.40 |
16.20 |
62 |
20.6 |
382.00 |
60.20 |
4.30 |
| |
|
|
|
|
|
|
|
|
| 125L |
139.7 |
4.50 |
15.00 |
67 |
19.1 |
437.20 |
62.60 |
4.78 |
| M |
|
4.80 |
15.90 |
63 |
20.3 |
463.44 |
66.35 |
4.77 |
| H |
|
5.40 |
17.90 |
56 |
20.6 |
514.50 |
73.70 |
4.75 |
| |
|
|
|
|
|
|
|
|
| 135L |
152.4 |
4.50 |
16.40 |
61 |
20.9 |
572.20 |
75.10 |
5.23 |
| M |
|
4.80 |
17.50 |
57 |
22.2 |
606.92 |
79.55 |
5.22 |
| H |
|
5.40 |
19.60 |
51 |
25.0 |
674.50 |
88.50 |
5.20 |
| |
|
|
|
|
|
|
|
|
| 150L |
165.1 |
4.50 |
17.80 |
56 |
22.7 |
732.60 |
88.70 |
5.68 |
| M |
|
4.80 |
18.90 |
53 |
24.2 |
777.32 |
94.16 |
5.67 |
| H |
|
5.40 |
21.30 |
47 |
27.10 |
864.70 |
105.0 |
5.65 |
| |
|
|
|
|
|
|
|
|
| 150L |
168.3 |
4.50 |
18.20 |
55 |
23.1 |
777.20 |
92.40 |
5.79 |
| M |
|
4.80 |
19.40 |
52 |
24.7 |
824.78 |
98.01 |
5.78 |
| H1 |
|
5.40 |
21.70 |
46 |
27.6 |
917.70 |
109.00 |
5.76 |
| H2 |
|
6.30 |
25.20 |
40 |
32.0 |
1053.00 |
125.00 |
5.73 |
| |
|
|
|
|
|
|
|
|
| 175L |
193.7 |
4.80 |
22.40 |
45 |
28.5 |
1271.71 |
131.11 |
6.68 |
| M |
|
5.40 |
25.10 |
40 |
32.0 |
1417.00 |
146.00 |
6.66 |
| H |
|
5.90 |
27.30 |
37 |
34.8 |
1535.20 |
158.65 |
6.64 |
| |
|
|
|
|
|
|
|
|
| 200L |
219.1 |
4.80 |
25.40 |
39 |
32.3 |
1856.51 |
169.47 |
7.58 |
| M |
|
5.60 |
29.50 |
34 |
37.5 |
2141.0 |
195.00 |
7.55 |
| H |
|
5.90 |
31.00 |
32 |
39.5 |
2247.0 |
205.00 |
7.54 |
| |
|
|
|
|
|
|
|
|
| 250H |
273.0 |
5.90 |
38.90 |
26 |
49.5 |
4412.0 |
323.00 |
9.45 |
| 300H |
323.9 |
6.30 |
49.30 |
20 |
62.8 |
7992.0 |
493.0 |
11.2 |
|