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Steel Pipe Flow Friction Loss for sizes 10" to 12 " inch diameter

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Steel Pipe Flow Friction Loss for sizes 10" to 12 " inch diameter

Tables are for steel pipe with a surface roughness of C=100.

See also

To adjust for different surface roughness factors, use the following correction factors:

Value of C
150
140
130
120
110
100
90
80
70
60
-
0.47
0.54
0.62
0.71
0.84
1.00
1.22
1.51
1.93
2.57

 

Friction Losses in Pipe: Standard Weight Steel 10 " Dia.
Pipe Size, in. 10
Pipe Dia., in.
10.02
Velocity, fps
Surface Rough C
100
hd. loss, ft/100 ft
gpm
800
3.25
0.66
850
3.46
0.74
900
3.66
0.82
950
3.87
0.91
1,000
4.07
1.00
1,050
4.27
1.09
1,100
4.48
1.19
1,150
4.68
1.29
1,200
4.88
1.40
1,250
5.09
1.51
1,300
5.29
1.62
1,350
5.49
1.74
1,400
5.70
1.86
1,450
5.90
1.98
1,500
6.10
2.11
1,550
6.31
2.24
1,600
6.51
2.38
1,650
6.71
2.52
1,700
6.92
2.66
1,750
7.12
2.81
1,800
7.32
3.0
1,850
7.53
3.1
1,900
7.73
3.3
1,950
7.93
3.4
2,000
8.14
3.6
2,050
8.34
3.8
2,100
8.54
3.9
2,150
8.75
4.1
2,200
8.95
4.3
2,250
9.15
4.5
2,300
9.36
4.7

 

Friction Losses in Pipe: Standard Weight Steel 12 " Dia.
Pipe Size, in. 12
Pipe Dia., in.
11.938
Velocity, fps
Surface Rough C
100
hd. loss, ft/100 ft
gpm
1,000
2.87
0.43
1,050
3.01
0.47
1,100
3.15
0.51
1,150
3.30
0.55
1,200
3.44
0.60
1,250
3.58
0.64
1,300
3.73
0.69
1,350
3.87
0.74
1,400
4.01
0.79
1,450
4.16
0.85
1,500
4.30
0.90
1,550
4.44
0.96
1,600
4.59
1.02
1,650
4.73
1.07
1,700
4.87
1.14
1,750
5.02
1.20
1,800
5.16
1.26
1,850
5.30
1.33
1,900
5.45
1.39
1,950
5.59
1.46
2,000
5.73
1.53
2,050
5.88
1.61
2,100
6.02
1.68
2,150
6.16
1.75
2,200
6.31
1.83
2,400
6.88
2.15
2,600
7.45
2.49
2,800
8.03
2.86
3,000
8.60
3.2
3,500
10.03
4.3
4,000
11.47
5.5

Related

Source

American Gas Association and the National Fire Protection Association. Used by permission