# Propane Gas - Pipe Sizing

## Sizing low pressure propane gas pipe lines - Metric units

The tables and diagrams below can be used to size propane gas pipe lines.

### Steel Pipe - Schedule 40

Capacity of Pipe (kW)
Pipe Size
(in)
Pipe Length (m)
36122450
1/2 70 48 33 22 15
3/4 145 100 69 47 32
1 274 188 130 89 60
1 1/4 560 387 265 182 123
1 1/2 840 580 400 274 184
2 1625 1117 768 527 354
2 1/2 2590 1780 1223 841 565
3 4580 3145 2160 1487 1000
4 9340 6415 4410 3030 2040
5 16900 11615 7980 5485 3690
6 27360 18800 12920 8880 5970
8 56220 38640 26560 18250 12270
• pressure less than 10 kPa
• fittings factor 1.5 - equivalent pipe length = pipe length + 50%
• pressure drop 125 Pa
• energy content in propane gas 94 MJ/m3
• steel pipes schedule 40

### Copper Tubing - type K

Capacity of Pipe (kW)
Nominal Pipe Size (O.D)
(in)
Pipe Length (m)
361224
1/4 (3/8) 11 7 5 3
3/8 (1/2) 22 15 11 7
1/2 (5/8) 45 31 21 15
5/8 (3/4) 79 54 37 26
3/4 (7/8) 112 77 53 36
1 (1 1/8) 239 165 113 77
1 1/4 (1 3/8) 430 295 203 140
• pressure less than 10 kPa
• fittings factor 1.5 - equivalent pipe length = pipe length + 50%
• pressure drop 125 Pa
• energy content in propane gas 94 MJ/m3
• copper tubing type K

### Copper Tubing - type L

Capacity of Pipe (kW)
Nominal Pipe Size (O.D)
(in)
Pipe Length (m)
361224
1/4 (3/8) 12 8 5 4
3/8 (1/2) 26 18 12 8
1/2 (5/8) 50 34 23 16
5/8 (3/4) 83 57 39 27
3/4 (7/8) 128 88 60 41
1 (1 1/8) 258 177 122 83
1 1/4 (1 3/8) 450 308 211 145
• pressure less than 10 kPa
• fittings factor 1.5 - equivalent pipe length = pipe length + 50%
• pressure drop 125 Pa
• energy content in propane gas 94 MJ/m3
• copper tubing type L

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