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IS Specification IS-1239 ( Part 1) -1990
Dimensions and Nominal Weights, etc. of Steel Tubes
N.B. and Series
Outside Diameter
Wall Thickness
Weight of Black Tube
Plain End
Screwed And Socketed
mm
Minimum mm
Maximum mm
mm
SWG
kg/meter
mtrs/tonne
kg/meter
mtrs/tonne
15 L
21.0
21.4
2.0
14
0.947
1056
0.956
1046
20 L
26.4
26.9
2.3
13
1.38
725
1.39
719
25 L
33.2
33.8
2.6
12
1.98
505
2.00
500
32 L
41.9
42.5
2.6
12
2.54
394
2.57
389
40 L
47.8
48.4
2.9
11
3.23
310
3.27
306
50 L
59.6
60.2
2.9
11
4.08
245
4.15
241
65 L
75.2
76.0
3.2
10
5.71
175
5.83
172
80 L
87.9
88.7
3.2
10
6.72
149
6.89
145
100 L
113.0
113.9
3.6
9
9.75
103
10.0
100
15 M
21.0
21.8
2.6
12
1.21
826
1.22
820
20 M
26.5
27.3
2.6
12
1.56
641
1.57
637
25 M
33.3
34.2
3.2
10
2.41
415
2.43
412
32 M
42.0
42.9
3.2
10
3.10
323
3.13
319
40 M
47.9
48.8
3.2
10
3.56
281
3.60
278
50 M
59.7
60.8
3.6
9
5.03
199
5.10
196
65 M
75.3
76.6
3.6
9
6.42
156
6.54
153
80 M
88.0
89.5
4.0
8
8.36
120
8.53
117
100 M
113.1
115.0
4.5
7
12.2
82
12.5
80
125 M
138.5
140.8
4.8
6
15.9
63
16.4
61
150 M
163.9
166.5
4.8
6
18.9
53
19.5
51
15 H
21.0
21.8
3.2
10
1.44
694
1.45
690
20 H
26.5
27.3
3.2
10
1.87
535
1.88
532
25 H
33.3
34.2
4.0
8
2.93
341
2.95
339
32 H
42.0
42.9
4.0
8
3.79
264
3.82
262
40 H
47.9
48.8
4.0
8
4.37
229
4.41
227
50 H
59.7
60.8
4.5
7
6.19
162
6.26
160
65 H
75.3
76.6
4.5
7
7.93
126
8.05
124
80 H
88.0
89.5
4.8
6
9.90
101
10.40
96
100 H
113.1
115.0
5.4
5
14.5
69
14.8
68
125 H
138.5
140.8
5.4
5
17.9
56
18.4
54
150 H
163.9
166.5
5.4
5
21.3
47
21.9
46
BS Specification BS-1387:1967 
Dimensions, Nominal Weights, etc. of Steel Tubes
 
N.B. and Series
App. Outside Diameter
Thickness
Weight of Black Tubes
App. Wt. of Black S & S (6M) tubes
Calc. Nominal Weight of Galvanized Tubes
App. Weight of
GI S & S(6M) tubes
Plain End
Screwed And Socketed
Plain End
Screwed And Socketed
inch
inch
inch
S W G
lb/ft
ft/ton
lb/ft
ft/ton
pcs./ton
lb/ft
ft/ton
lb/ft
ft/ton
pcs./ton
1/2 L
27/32
0.080
14
0.640
3500
0.646
3467
176
0.685
3270
0.692
3237
164
3/4 L
1.1/16
0.092
13
0.944
2373
0.954
2348
119
1.001
2238
1.008
2222
113
1 L
1.11/32
0.104
12
1.35
1659
1.36
1647
83
1.42
1577
1.43
1566
79
1 1/4 L
1.11/16
0.104
12
1.73
1295
1.75
1280
65
1.82
1231
1.84
1217
62
1 1/2 L
1.29/32
0.116
11
2.19
1023
2.22
1009
51
2.28
982
2.31
970
49
2 L
2.3/8
0.116
11
2.76
812
2.81
797
40
2.88
778
2.93
765
39
2 1/2 L
3
0.128
10
3.90
574
3.98
563
28
4.06
552
4.14
541
27
3 L
3.1/2
0.128
10
4.58
489
4.69
478
24
4.74
473
4.90
457
23
4 L
4.1/2
0.144
9
6.64
337
6.84
327
16
6.86
327
7.06
317
16
1/2 M
27/32
0.104
12
0.822
2725
0.828
2705
137
0.860
2605
0.867
2584
131
3/4 M
1.1/16
0.104
12
1.06
2113
1.07
2093
106
1.11
2018
1.12
2000
101
1 M
1.11/32
0.128
10
1.64
1366
1.65
1358
69
1.71
1310
1.72
1302
66
1 1/4 M
1.11/16
0.128
10
2.11
1062
2.13
1052
53
2.19
1023
2.21
1014
51
1 1/2 M
1.29/32
0.128
10
2.43
922
2.46
911
46
2.52
889
2.55
878
44
2 M
2.3/8
0.144
9
3.42
655
3.47
646
33
3.55
631
3.60
622
31
2 1/2 M
3
0.144
9
4.38
511
4.46
502
25
4.52
496
4.60
487
25
3 M
3.1/2
0.160
8
5.69
394
5.80
386
19
5.86
382
5.97
375
19
4 M
4.1/2
0.176
7
8.14
275
8.34
269
13
8.35
268
8.55
262
13
5 M
5.1/2
0.192
6
10.9
206
11.2
200
10
11.15
201
11.48
195
10
6 M
6.1/2
0.192
6
12.9
174
13.3
168
8
13.22
169
13.62
164
8
1/2 H
27/32
0.128
10
0.977
2293
0.983
2279
116
1.015
2207
1.021
2194
111
3/4 H
1.1/16
0.128
10
1.27
1764
1.28
1750
89
1.33
1684
1.34