Water, Gas and Air Pipelines

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We design and supply superior quality steel pipes for various water, air and gas transport applications. Made of high quality material, these are high in performance and have found various uses in different industrial applications. These pipelines are meant for the movement of water, oil & natural gas at a very high pressure. Buried high pressure oil and gas pipelines are tested for strength by pressurizing them to at least 125% of their maximum operating pressure (MAOP).
Since many long distance transmission pipelines are designed to have a steel hoop stress of 80% of specified minimum yield (SMYS) at MAOP, this means that the steel is stressed to SMYS and above during the testing. Leak testing is performed by balancing changes in the measured pressure in the test section against the theoretical pressure changes calculated from changes in the measured temperature of the test section.
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For Water, Gas and Air Pipeline conforming to IS: 1239
N.B.
&Series		 Outside Diameter Wall thickness Nominal Mass of Galvanized Steel Tubes Socket
            Plain
end		 Screwed
& Socketed		      
mm inch Min. mm Max. mm mm SWG Kg
/mtrs.		 mtrs
/tonne		 Kg/ Mtrs Mtrs
/tonne		 No.of Pipes per bundle Min. Outer dia. mm Min. Length mm
15 L
M
H		 1/2
1/2
1/2		 21.0
21.0
21.0		 21.4
21.8
21.8		 2.00
2.60
3.20		 14
12
10		 0.947
1.210
1.440		 1056
826
694		 0.956
1.220
1.450		 1046
820
690		 165
132
110		 27.0 37.0
20 L
M
H		 3/4
3/4
3 / 4		 26.4
26.5
26.5		 26.9
27.3
27.3		 2.30
2.60
3.20		 13
12
10		 1.380
1.560
1.870		 725
641
535		 1.390
1.570
1.880		 719
637
532		 112
98
84 		32.5 39.0
25 L
M
H		 1
1
1		 33.2
33.3
33.3		 33.8
34.2
34.2		 2.60
3.20
4.00		 12
10
8		 1.980
2.410
2.930		 505
415 341		 2.000
2.430
2.950		 500
412 339		 80
65
55		 39.5 46.0
32 L
M
H		 1 ¼
1 ¼
1 ¼ 		41.9
42.0
42.0		 42.5
42.9
42.9 		2.60
3.20
4.00		 12
10
8		 2.540
3.100
3.790		 394
323 264		 2.570
3.130
3.820		 389
319
262		 60
51
42		 49.0 51.0
40 L
M
H		 1 ½
1 ½
1 ½ 		47.8
47.9
47.9		 48.4
48.8
48.8		 2.90
3.20
4.00		 11
10
8		 3.230
3.560
4.370		 310
281
229		 3.270
3.600
4.410		 306
278
227		 48
45
36		 56.0 51.0
50 L
M
H		 2
2
2		 59.6
39.7
59.7		 60.2
60.8
60.8		 2.90
3.60
4.50		 11
9
7 		4.080
5.030
6.190		 245
199
162		 4.150
5.100
6.260		 241
196
160		 39
30
27		 68.0 60.0
65L
M
H		 2 ½
2 ½
2 1/2		 75.2
75.3
75.3		 76.0
76.6
76.6		 3.20
3.60
4.50		 10
9
7		 5.710
6.410
7.930		 175
156
126		 5.830
6.540
8.050		 172
153
124 		27
24
20		 84.0 69.0
80 L
M
H		 3
3
3		 87.9
88.0
88.0		 88.7
89.5
89.5		 3.20
4.00
4.80		 10
8
6		 6.720
8.360
9.900		 149
120
101		 6.890
8.530
10.400		 145
117
96		 23
19
16		 98.0 75.0
100 L
M
H		 4
4
4		 113.0
113.1
113.0		 113.9
115.0
115.0		 3.60
4.50
5.40		 9
7
5		 9.750
12.200
14.500		 103
82
69		 10.000
12.500
14.800		 100
80
68		 16
13
11		 124.0 87.0
125 M
H		 5
5		 138.5
138.5		 140.8
140.8		 4.80 5.40 6
5		 15.900 17.900 63
56		 16.400
18.400		 61 54 10
9		 151.0 96.0
150M
H		 6
6		 163.9
163.9		 166.5
166.5		 4.80
5.40		 6
5		 18.900
21.300		 53
47		 19,500
21,900		 51
46		 8
7		 178.0 96.0
L=Light,   M = Medium,   H= Heavy      
Tolerances
a) Outside Diameter Maximum Deviation Upto & including 21.3mm #9; Above 21.3mm Light Tubes+ Not limited -8%
  Medium and+ Not limited Heavy Tubes -10%
Weight Single tube +10% (Light series)
  Single tube (Medium& Heavy series) ± 10%
  For Quality per Load of 10 tonnes minimum (Light series) ± 5%
  For Quantity per Load of 10 tonnes minimum (Medium & heavy series) ± 7.5%
Length 4 to 7 meters unless otherwise specified

For water steel pipes and sewage conforming to IS: 3589/2001
Outside Diameter OD Nominal Bore Wall Thickness Calculated Weight (Plain end)
mm mm mm Kg./ mtr. Mtrs./tonne approx.
168.3 150 2.6 10.6 94
    3.2 12.0 83
    4.0 16.2 62
    4.5 18.2 55
219.1 200 2.6 13.9 72
    3.6 19.1 52
    4.5 23.8 42
    6.3 33.1 30
273.0 250 3.6 23.9 42
    4.0 26.5 38
    5.0 33.0 30
    6.3 41.1 24
323.9 300 4.0 31.8 31
    4.5 35.4 28
    5.6 44.0 23
    7.1 55.5 18
355.6 350 4.0 34.7 29
    5.0 43.2 23
    5.6 48.3 21
    8.0 68.6 15
Tolerances
Outer Dia ± 0.75%
Thickness ± 10%
Length 4 to 7 meter
Notes
Thickness as stated above are commonly used. However, pipes of other thickness can also be manufactured and supplied to meet customers' requirement. Pipes can be supplied in grades FE-330, FE-410 and FE-450.