Schedule 80 carbon steel pipes are made from carbon steel materials, which can vary in composition depending on the grade. This variation affects the pipe's strength and toughness. The schedule scale is used internationally to identify the pressure capacities of pipes. Schedule 80 pipes have specific characteristics within this scale, which ranges from Schedule 5 (the least pressure capable) to Schedule 160 (the most pressure capable).
Schedule 80 pipes fall in the middle of this spectrum. Their nominal bore sizes range from 1/8 inch to 6 inches, with internal and external diameters that affect wall thickness, ranging from 0.095 mm to 0.432 mm. The pressure rating of Schedule 80 pipes depends on these factors: wall thickness, diameter, and material grade. Stronger materials can achieve Schedule 80 classification with thinner walls.
The wall thickness for Schedule 80 pipes ranges only from 0.095 mm to 0.432 mm. These pipes are used in applications that require high toughness and resistance to wear and tear, but are less corrosive. The weight of Schedule 80 pipes varies based on the grade, wall thickness, diameter, and length. For more information and pricing, please contact us.
Schedule 80 Carbon Steel Pipe Chart
|
Nominal size [inches]
|
Outside diameter [inches]
|
Outside diameter [mm]
|
Wall thickness [inches]
|
Wall thickness [mm]
|
Weight [lb/ft]
|
Weight [kg/m]
|
|
1/8
|
0.405
|
10.3
|
0.095
|
2.41
|
0.31
|
0.47
|
|
1/4
|
0.54
|
13.7
|
0.119
|
3.02
|
0.54
|
0.8
|
|
1/2
|
0.84
|
21.3
|
0.147
|
3.73
|
1.09
|
1.62
|
|
3/4
|
1.05
|
26.7
|
0.154
|
3.91
|
1.47
|
2.2
|
|
1
|
1.315
|
33.4
|
0.179
|
4.55
|
2.17
|
3.24
|
|
1 1/4
|
1.66
|
42.2
|
0.191
|
4.85
|
3
|
4.47
|
|
1 1/2
|
1.9
|
48.3
|
0.2
|
5.08
|
3.63
|
5.41
|
|
2
|
2.375
|
60.3
|
0.218
|
5.54
|
5.02
|
7.48
|
|
2 1/2
|
2.875
|
73
|
0.276
|
7.01
|
7.66
|
11.41
|
|
3
|
3.5
|
88.9
|
0.3
|
7.62
|
10.25
|
15.27
|
|
3 1/2
|
4
|
101.6
|
0.318
|
8.08
|
12.5
|
18.63
|
|
4
|
4.5
|
114.3
|
0.337
|
8.56
|
14.98
|
22.32
|
|
5
|
5.563
|
141.3
|
0.375
|
9.53
|
20.78
|
30.97
|
|
6
|
6.625
|
168.3
|
0.432
|
10.97
|
28.57
|
42.56
|
|
8
|
8.625
|
219.1
|
0.5
|
12.7
|
43.39
|
64.64
|
|
10
|
10.75
|
273
|
0.594
|
15.09
|
64.43
|
96.01
|
|
12
|
12.75
|
323.8
|
0.688
|
17.48
|
88.63
|
132.08
|
|
14
|
14
|
355.6
|
0.75
|
19.05
|
106.13
|
158.1
|
|
16
|
16
|
406.4
|
0.844
|
21.44
|
136.61
|
203.53
|
|
18
|
18
|
457
|
0.938
|
23.83
|
170.92
|
254.55
|
|
20
|
20
|
508
|
1.031
|
26.19
|
208.87
|
311.17
|
|
24
|
24
|
610
|
1.125
|
30.96
|
296.58
|
442.08
|
Why Knowing SCH 80 is Important
SCH 80 indicates a specific wall thickness grade, used in the industry to simplify recording and use. Accurate values are necessary for successful construction design, as inaccuracies can lead to significant gaps and failures.
Besides SCH, other terms like DN (nominal diameter in mm) and NB (nominal bore in imperial units) describe the diameter of steel pipes. Different expressions are used depending on the application.
Wall Thickness Representation
Standard Weight Pipe (STD): Represented by Sch 40, suitable for carbon steel reducers with an inner diameter <DN250mm.
Thickened Pipe (XS): Represented by Sch 80, suitable for carbon steel reducers with an inner diameter <DN200mm.
Extra Thick Pipes (XXS): Represented by Sch 120, suitable for carbon steel reducers with an inner diameter <DN250mm.
Go here for more about: Schedule 40 Pipe VS Schedule 80 Pipe
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