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Pipe Properties for 18" and 20"
1"- 3" / 3 1/2" - 5" / 6" - 8" / 10" - 12" / 14"-16" / 18"- 20"  / 22"- 24" / 30 "- 48 "
Nominal
Pipe Size
Outside
Diameter
(D)		 Designation Wall
Thickness
Inside Diameter
(d)		 Weight
per
Foot		 Weigh of
Water per
Foot of Pipe		 Square Feet Outside Surface per Foot Square Feet Inside Surface per Foot
 
18* 18.000 10 Ga.
8 Ga.
6 Ga.		 .134
.164
.194		 17.732
17.672
17.612		 26
31
37		 107.1
106.3
105.6		 4.71
4.71
4.71		 4.64
4.63
4.61
3 Ga.
10
API		 .239
.250
.281		 17.522
17.500
17.438		 45
47
49		 104.5
104.6
104.0		 4.71
4.71
4.71		 4.59
4.58
4.56
20
API
STD		 .312
.344
.375		 17.375
17.312
17.250		 59
65
71		 102.5
102.0
101.2		 4.71
4.71
4.71		 4.55
4.53
4.51
API
30
XS		 .406
.438
.500		 17.188
17.124
17.000		 76
82
93		 100.6
99.5
98.2		 4.71
4.71
4.71		 4.50
4.48
4.45
40
60		 .562
.750		 16.876
16.500		 105
138		 97.2
92.5		 4.71
4.71		 4.42
4.32
80
100
120
140
160		 .937
1.156
1.375
1.562
1.781		 16.126
15.688
15.250
14.876
14.438		 171
208
244
275
309		 88.5
83.7
79.2
75.3
71.0		 4.71
4.71
4.71
4.71
4.71		 4.22
4.11
3.99
3.89
3.78
20 20.000 10 Ga.
8 Ga.
6 Ga.		 .134
.164
.194		 19.732
19.672
19.612		 28
35
41		 132.6
131.8
131.0		 5.24
5.24
5.24		 5.17
5.15
5.13
3 Ga.
10
API		 .239
.250
.281		 19.522
19.500
19.438		 50
53
59		 129.8
130.0
128.6		 5.24
5.24
5.24		 5.11
5.11
5.09
API
API
Std 20		 .312
.344
.375		 19.374
19.312
19.250		 66
72
79		 128.1
127.0
126.0		 5.24
5.24
5.24		 5.08
5.06
5.04
API
API
XS 30		 .406
.438
.500		 19.188
19.124
19.00		 85
92
105		 125.4
125.1
122.8		 5.24
5.24
5.24		 5.02
5.01
4.97
40
60
80		 .593
.812
1.031		 18.814
18.376
17.938		 123
167
209		 120.4
114.9
109.4		 5.24
5.24
5.24		 4.93
4.81
4.80
100
120
140
160		 1.281
1.500
1.750
1.968		 17.438
17.000
16.500
16.064		 256
297
342
379		 103.4
98.3
92.6
87.9		 5.24
5.24
5.24
5.24		 4.56
4.45
4.32
4.21
 
* 18" Standard and Extra Strong do not correspond to any schedule number
 
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