GAS WATER AND AIR PIPELINES
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.
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).
For Water, Gas and Air Pipeline
N.B. &Series |
Outside Diameter |
Wall thickness |
Nominal Mass of Galvanized Steel Tubes |
Socket |
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Plain end |
Screwed & Socketed |
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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 |
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Tolerances |
a) Outside Diameter Maximum Deviation Upto &
including 21.3mm #9; Above 21.3mm |
Light Tubes+ Not limited -8% |
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Medium and+ Not limited Heavy Tubes -10% |
Weight |
Single tube +10% (Light series) |
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Single tube (Medium& Heavy series) ± 10% |
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For Quality per Load of 10 tonnes minimum (Light series) ± 5% |
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For Quantity per Load of 10 tonnes minimum (Medium & heavy series) ± 7.5% |
Length |
4 to 7 meters unless otherwise specified |
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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 |
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3.2 |
12.0 |
83 |
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4.0 |
16.2 |
62 |
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4.5 |
18.2 |
55 |
219.1 |
200 |
2.6 |
13.9 |
72 |
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3.6 |
19.1 |
52 |
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4.5 |
23.8 |
42 |
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6.3 |
33.1 |
30 |
273.0 |
250 |
3.6 |
23.9 |
42 |
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4.0 |
26.5 |
38 |
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5.0 |
33.0 |
30 |
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6.3 |
41.1 |
24 |
323.9 |
300 |
4.0 |
31.8 |
31 |
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4.5 |
35.4 |
28 |
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5.6 |
44.0 |
23 |
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7.1 |
55.5 |
18 |
355.6 |
350 |
4.0 |
34.7 |
29 |
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5.0 |
43.2 |
23 |
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5.6 |
48.3 |
21 |
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8.0 |
68.6 |
15 |
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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. |
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