STEEL TUBES FOR STRUCTURAL PURPOSE CONFORMING TO IS: 1161-1979
    DIMENSION
NOMINAL
BORE
OUTSIDE
DIAMETER
SERIES
THICKNESS
OF PIPE
MASS OF
PLAIN TUBE
 mm
  mm
 
  mm
  Kg / mtr
15
21.3
Light
2.00
0.962
15
21.3
Medium
2.65
1.22
15
21.3
Heavy
3.25
1.45
20
26.9
Light
2.35
1.42
20
26.9
Medium
2.65
1.58
20
26.9
Heavy
3.25
1.90
25
33.7
Light
2.65
2.04
25
33.7
Medium
3.25
2.46
25
33.7
Heavy
4.05
2.99
32
42.4
Light
2.65
2.61
32
42.4
Medium
3.25
3.15
32
42.4
Heavy
4.05
3.86
40
48.3
Light
2.90
3.27
40
48.3
Medium
3.25
3.61
40
48.3
Heavy
4.05
4.43
50
60.3
Light - 1
2.90
4.14
50
60.3
Light - 2
3.25
4.57
50
60.3
Medium
3.65
5.10
50
60.3
Heavy
4.50
6.17
65
76.1
Light
3.25
5.84
65
76.1
Medium
3.65
6.53
65
76.1
Heavy
4.50
7.92
80
88.9
Light
3.25
6.86
80
88.9
Medium
4.05
8.48
80
88.9
Heavy
4.85
10.10
100
114.3
Light
3.65
9.97
100
114.3
Medium
4.50
12.10
100
114.3
Heavy
5.40
14.50
125
139.7
Light
4.50
14.90
125
139.7
Medium
4.85
16.20
125
139.7
Heavy
5.40
17.90
150
165.1
Light
4.50
17.80
150
165.1
Medium
4.85
19.20
150
165.1
Heavy
5.40
21.20
150
168.3
Light
4.50
18.10
150
168.3
Medium
4.85
19.60
150
168.3
Heavy - 1
5.40
21.70
150
168.3
Heavy - 2
6.30
25.30
175
193.7
Light
4.85
22.60
175
193.7
Medium
5.40
25.00
175
193.7
Heavy
5.90
27.30
200
219.1
Light
4.85
25.70
200
219.1
Medium
5.60
29.40
200
219.1
Heavy
5.90
31.00
250
273.0
Heavy
5.90
38.80
300
323.9
Heavy
6.30
49.50
350
355.6
Heavy
8.00
68.30
  TOLERANCE:
   Outside diameter : Up to & including 48.3 mm +0.4 mm, -0.8 mm  +/- 1%
    Wall thickness :  + no limit  -10%                    Weight :  Single Light Tube  -8%,  +10% 
                                                                                    Single Med & Heavy tube  +/-10%
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