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Steel Pipes - Friction Loss vs. Viscous Liquid Flow

Friction loss in schedule 40 steel pipe with viscous liquids - viscosities ranging from water to oil.

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Friction loss - feet of liquid per 100 feet of pipe - in standard schedule 40 steel pipes:

For full table with Tomato Juice and SAE 30 Oil - rotate the screen!

Steel Pipes - Friction Loss vs. some Viscous Liquids
Pipe Size
(inches)
Flow RateFriction Loss - (feet of liquid per 100 feet of pipe, m/100 m)
Kinematic Viscosity - (SSU)
(gpm)(l/s)31
(Water)
100
(~Cream)
200
(~Vegetable oil)
400
(~SAE 10 oil)
800
(~Tomato juice)
1500
(~SAE 30 oil)
1/2 3 0.19 10.0 25.7 54.4 108.0 218.0 411.0
3/4 3 0.19 2.5 8.5 17.5 35.5 71.0 131.0
5 0.32 6.3 14.1 29.3 59.0 117.0 219.0
1 3 0.19 0.8 3.2 6.6 13.4 26.6 50.0
5 0.32 1.9 5.3 11.0 22.4 44.0 83.0
10 0.63 6.9 11.2 22.4 45.0 89.0 165.0
15 0.95 14.6 26.0 34.0 67.0 137.0  
20 1.26 25.1 46 46.0 90.0 180.0  
1 1/4 5 0.32 0.5 1.8 3.7 7.6 14.8 26.0
10 0.63 1.8 3.6 7.5 14.9 30.0 55.0
15 0.95 3.7 6.4 11.3 22.4 45.0 84.0
1 1/2 10 0.63 0.8 1.9 4.2 8.1 16.5 31.0
15 0.95 1.7 2.8 6.2 12.4 25.0 46.0
20 1.26 2.9 5.3 8.1 16.2 33.0 61.0
30 1.9 6.3 11.6 12.2 24.3 50.0 91.0
40 2.5 10.8 19.6 20.8 32.0 65.0 121.0
2 20 1.26 0.9 1.5 3.0 6.0 11.9 22.4
30 1.9 1.8 3.2 4.4 9.0 17.8 33.0
40 2.5 3.1 5.8 5.8 11.8 24.0 44.0
60 3.8 6.6 11.6 13.4 17.8 36.0 67.0
2 1/2 30 1.9 0.8 1.4 2.2 4.4 8.8 16.6
40 2.5 1.3 2.5 3.0 5.8 11.8 22.2
60 3.8 2.7 5.1 5.5 8.8 17.8 34.0
80 5.0 4.7 8.3 9.7 11.8 24.0 44.0
100 6.3 7.1 12.2 14.1 14.8 29.0 55.0
3 60 3.8 0.9 1.8 1.8 3.7 7.3 13.8
100 6.3 2.4 4.4 5.1 6.2 12.1 23.0
125 7.9 3.6 6.5 7.8 8.1 15.3 29.0
150 9.5 5.1 9.2 10.4 11.5 18.4 35.0
175 11.0 6.9 11.7 13.8 15.8 21.4 40.0
200 12.6 8.9 15.0 17.8 20.3 25.0 46.0
4 80 5.0 0.4 0.8 0.8 1.7 3.3 6.2
100 6.3 0.6 1.2 1.3 2.1 4.1 7.8
125 7.9 0.9 1.8 2.1 2.6 5.2 9.8
150 9.5 1.3 2.4 2.9 3.1 6.2 11.5
175 11.0 1.8 3.2 4.0 4.0 7.4 13.7
200 12.6 2.3 4.2 5.1 5.1 8.3 15.5
250 15.8 3.5 6.0 7.4 8.0 10.2 19.4
6 125 7.9 0.1 0.3 0.3 0.52 1.0 1.9
150 9.5 0.2 0.3 0.4 0.6 1.2 2.3
175 11.0 0.2 0.4 0.5 0.7 1.4 2.6
200 12.6 0.3 0.6 0.7 0.8 1.6 3.0
250 15.8 0.5 0.8 1.0 1.0 2.1 3.7
400 25.2 1.1 1.9 2.3 2.8 3.2 6.0
8 250 15.8 0.1 0.2 0.3 0.4 0.7 1.2
400 25.2 0.3 0.5 0.6 0.7 1.1 2.0
400 25.2 0.1 0.2 0.2 0.2 0.4 0.8
  •  Centistokes (cSt) = SSU / 4.55
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