Dimensions of Black & Galvanised Steel Tubes as per IS: 1239 (Part - 1)/1990
NOMINAL CLASS OUTSIDE
DIAMETER
WALL
THICKNESS
PLAIN END SCREWED & SOCKETS
BORE (NB)
mm inches
Min. mm Max. mm mm SWG Kg\Mtr Mtr/Mt Mtrs/
Tonne
Kg\Mtr
15 (1/2") L
M
H
21.0
21.0
21.0
21.4
21.8
21.8
2.00
2.60
3.20
14
12
10
0.947
1.21
1.44
1056
826
694
1046
819
689
0.947
1.21
1.44
20 (3/4") L
M
H
26.4
26.5
26.5
26.9
27.3
27.3
2.30
2.60
3.20
13
12
10
1.38
1.56
1.87
724
641
534
719
637
532
1.38
1.56
1.87
25 (1") L
M
H
33.2
33.3
33.3
33.8
34.2
34.2
2.60
3.20
4.00
12
10
8
1.98
2.41
2.93
505
415
341
500
411
339
1.98
2.41
2.93
32 (11/4") L
M
H
41.9
42.0
42.0
42.5
42.9
42.9
2.60
3.20
4.00
12
10
8
2.54
3.10
3.79
393
322
264
389
319
261
2.54
3.10
3.79
40 (11/2") L
M
H
47.8
47.9
47.9
48.4
48.8
48.8
2.90
3.20
4.00
11
10
8
3.23
3.56
4.37
309
281
229
306
277
226
3.23
3.56
4.37
50(2") L
M
H
59.6
59.7
59.7
60.2
60.8
60.8
2.90
3.60
4.50
11
9
7
4.08
5.03
6.19
245
199
161
241
19
159
4.08
5.03
6019
65 (21/2") L
M
H
75.2
75.3
75.3
76.0
76.6
76.6
3.20
3.60
4.50
10
9
7
5.71
6.42
7.93
175
155
126
171
153
124
5.71
6.42
7.93
80 (3") L
M
H
87.9
88.0
88.0
88.7
89.5
89.5
3.20
4.00
4.80
10
8
6
6.72
8.36
9.90
149
119
101
145
117
96
6.72
8.36
9.90
100 (4") L
M
H
113.0
113.1
113.1
113.9
115.0
115.0
3.60
4.50
5.40
9
7
5
9.75
12.20
14.50
102
82
69
100
80
67
9.75
12.20
14.50
125 (5") M
H
138.5
138.5
140.8
140.8
4.80
5.40
6
5
15.90
17.9
63
56
61
54
15.90
17.9
150 (6") M
H
163.9
163.9
166.5
166.5
4.80
5.40
6
5
18.90
21.3
53
47
51
45
18.90
21.3
Tolerance
Thickness Light tubes


Medium and Heavy tubes
- 8 % + not limited
- 10 % + nolimited
Weight 1) Single tube ( Light series)
2) Single Tube ( Medium & Heavy Series )
3) For quantities per load of 10 tonnes min.
(Light Series)
4) For quantities per load of 10 tonnes min. (Medium & Heavy Series)
+ 10 % - 8%
+ 10 %
+ 5 %

+ 7.5 %
Length Light, Medium and
Heavy tubes
Random Length of 4 to 7 meters
Unless specified otherwise
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