Natural Gas - Pipe Sizing
Sizing low pressure natural gas pipe lines - metric values
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The tables below can be used for natural gas pipe sizing.
Steel Pipe - Schedule 40
| Capacity of Pipe (kW) | |||||
| Pipe Size (in) |
Pipe Length (m) | ||||
| 3 | 6 | 12 | 24 | 50 | |
| 1/2 | 41 | 28 | 19 | 13 | 9 |
| 3/4 | 86 | 59 | 40 | 28 | 19 |
| 1 | 161 | 110 | 76 | 52 | 35 |
| 1 1/4 | 331 | 228 | 155 | 108 | 72 |
| 1 1/2 | 495 | 340 | 235 | 161 | 108 |
| 2 | 956 | 655 | 450 | 310 | 210 |
| 2 1/2 | 1520 | 1045 | 720 | 495 | 330 |
| 3 | 2690 | 1850 | 1270 | 875 | 590 |
| 4 | 5490 | 3775 | 2595 | 1780 | 1200 |
| 5 | 9935 | 6830 | 4695 | 3225 | 2170 |
| 6 | 16090 | 11055 | 7600 | 5220 | 3510 |
| 8 | 33050 | 22715 | 15615 | 10730 | 7210 |
- pressure less than 10 kPa
- fittings factor 1.5 - equivalent pipe length = pipe length + 50%
- pressure drop 125 Pa
- energy content in natural gas 37 MJ/m3
- steel pipes schedule 40
Copper Tubing - type K
| Capacity of Pipe (kW) | ||||
| Nominal Pipe Size (O.D) (in) |
Pipe Length (m) | |||
| 3 | 6 | 12 | 24 | |
| 1/4 (3/8) | 6 | 4 | 3 | 2 |
| 3/8 (1/2) | 13 | 9 | 6 | 4 |
| 1/2 (5/8) | 26 | 18 | 12 | 8 |
| 5/8 (3/4) | 46 | 31 | 21 | 15 |
| 3/4 (7/8) | 65 | 45 | 31 | 21 |
| 1 (1 1/8) | 140 | 96 | 66 | 45 |
| 1 1/4 (1 3/8) | 250 | 170 | 119 | 82 |
- pressure less than 10 kPa
- fittings factor 1.5 - equivalent pipe length = pipe length + 50%
- pressure drop 125 Pa
- energy content in natural gas 37 MJ/m3
- copper tubing type K
Copper Tubing - type L
| Capacity of Pipe (kW) | ||||
| Nominal Pipe Size (O.D) (in) |
Pipe Length (m) | |||
| 3 | 6 | 12 | 24 | |
| 1/4 (3/8) | 7 | 5 | 3 | 2 |
| 3/8 (1/2) | 15 | 10 | 7 | 5 |
| 1/2 (5/8) | 29 | 20 | 13 | 9 |
| 5/8 (3/4) | 49 | 33 | 23 | 16 |
| 3/4 (7/8) | 75 | 51 | 35 | 24 |
| 1 (1 1/8) | 150 | 104 | 71 | 49 |
| 1 1/4 (1 3/8) | 260 | 180 | 124 | 85 |
- pressure less than 10 kPa
- fittings factor 1.5 - equivalent pipe length = pipe length + 50%
- pressure drop 125 Pa
- energy content in natural gas 37 MJ/m3
- copper tubing type L
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