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Carbon Steel Pipe Schedule Chart

Measuring pipe's inner and outer diameters of a pipe

 

What is Carbon Steel Pipe Schedule Chart?


A Carbon Steel Pipe Schedule Chart helps to understand the thickness and internal size of pipes without specific measurements. The chart uses schedules, ranging from sch 5 to SCH 160 and XXS, to show different wall thicknesses. Higher schedule numbers, like SCH 120 pipe, indicate thicker walls that can support more weight and pressure, making them suitable for tough conditions. Even if pipes have the same diameter, their wall thickness can vary based on the schedule, such as the SCH 140 pipe compared to schedule 40. Carbon steel pipes are marked with an "CS" for easy grade identification. Generally, the higher the schedule, the heavier and stronger the pipe.

Common Pipe Schedules

Some common pipe schedules include:
Schedule 40: This type of pipe schedule is probably the most popular because it applies to water and gas lines.
Schedule 80: This schedule is used when pressure levels are higher, such as in pipeline systems for transmitting oil and gas.

Carbon Steel Pipe Schedule Chart PDF

Carbon Steel Pipe Schedule 80 Based On ASME B36.10

The SCH 80 Carbon Steel Pipe is a type of pipe known for its strength and is part of the Carbon Steel Pipe Schedule 80 category. It's defined by its "sch 80 pipe thickness in mm," which means it has a thicker wall than standard pipes. This thickness makes it capable of handling high pressures and tough conditions, making it a preferred choice for industrial applications. You should look at the SCH 80 Pipe chart for exact sizes and capacities.

Nominal size
(inches)
Outer Diameter
(inches)
Outside Diameter
(mm)
Wall Thickness
(inches)
Wall Thickness
(mm)
Weight (lb/ft) Weight (kg/m)
½” DN15 0.84 21.3 0.147 3.73 1.09 1.62
¾” DN20 1.05 26.7 0.154 3.91 1.49 2.21
1” DN25 1.32 33.4 0.179 4.55 2.19 3.26
1 ¼” DN32 1.66 42.2 0.191 4.85 3.02 4.5
1 ½” DN40 1.9 48.3 0.2 5.08 3.66 5.45
2” DN 50 2.375 60.3 0.218 5.54 5.06 7.53
2 ½” DN65 2.875 73.0 0.276 7.01 7.71 11.48
3” DN80 3.5 88.9 0.3 7.62 10.33 15.37
3 ½” 4.0 101.6 0.318 8.08 12.6 18.75
4” DN100 4.5 114.3 0.337 8.56 15.1 22.46
5” DN125 5.563 141.3 0.375 9.53 20.92 31.14
6” DN150 6.625 168.3 0.432 10.97 28.78 42.83
8” DN200 8.625 219.1 0.5 12.7 43.72 65.06
10” DN250 10.75 273.1 0.5 12.7 55.15 82.02
12” DN300 12.75 323.9 0.5 12.7 65.91 98.09

Carbon Steel Pipe Schedule 40 Chart

SCH 40 Carbon Steel Pipe is designed for durability and efficiency. The "schedule 40 pipe wall thickness" refers to its specific thickness, making it sturdy yet not overly heavy. Measured in "sch 40 pipe thickness in mm," it provides a reliable balance between strength and flow capacity, suitable for various uses.

Nominal size [inches] Outside diameter [inches] Outside diameter [mm] Wall thickness [inches] Wall thickness [mm] Weight [lb/ft] Weight [kg/m]
1/8" NPS6 0.41 10.3 0.068 1.73 0.24 0.37
1/4" NPS8 0.54 13.7 0.088 2.24 0.42 0.63
3/8" NPS10 0.68 17.1 0.091 2.31 0.57 0.84
1/2" NPS15 0.84 21.3 0.109 2.77 0.85 1.27
3/4" NPS20 1.05 26.7 0.113 2.87 1.13 1.69
1" NPS25 1.32 33.4 0.133 3.38 1.68 2.5
1 1/4" NPS32 1.66 42.2 0.14 3.56 2.27 3.39
1 1/2" NPS40 1.9 48.3 0.145 3.68 2.72 4.05
2" NPS50 2.375 60.3 0.154 3.91 3.65 5.44
2 1/2" NPS65 2.875 73.0 0.203 5.16 5.79 8.63
3" NPS80 3.5 88.9 0.216 5.49 7.58 11.29
3 1/2" NPS90 4.0 101.6 0.226 5.74 9.11 13.57
4" NPS100 4.5 114.3 0.237 6.02 10.79 16.07
5" NPS125 5.563 141.3 0.258 6.55 14.62 21.77
6" NPS150 6.625 168.3 0.28 7.11 18.97 28.26
8" NPS200 8.625 219.1 0.322 8.18 28.55 42.55
10" NPS250 10.75 273.0 0.365 9.27 40.48 60.31
12" NPS300 12.75 323.8 0.406 10.31 53.52 79.73
14" NPS350 14.0 355.6 0.437 11.13 54.57 94.55
16" NPS400 16.0 406.4 0.5 12.7 82.77 123.3
18" NPS450 18.0 457.0 0.562 14.27 104.67 155.8
20" NPS500 20.0 508.0 0.594 15.09 123.11 183.42
24" NPS600 24.0 610.0 0.688 17.48 171.29 255.41
32" NPS800 32.0 813.0 0.688 17.48 230.08 342.91

Carbon Steel Schedule 60 Pipe Chart

Schedule 60 Carbon Steel Pipe is a strong and durable pipe used in various applications. It is known for its thickness, which is measured in millimetres. Specifically, the "schedule 60 pipe thickness in mm" indicates how thick the walls of the pipe are, making it capable of handling high pressures and tough conditions.

Nominal size [inches] Outside diameter [inches] Outside diameter [mm] Wall thickness [inches] Wall thickness [mm] Weight [lb/ft] Weight [kg/m]
8" NPS200 8.625 219.1 0.406 10.31 35.64 53.08
10" NPS250 10.75 273.0 0.5 12.7 54.74 81.55
12" NPS300 12.75 323.8 0.562 14.27 73.15 108.96
14" NPS350 14.0 355.6 0.594 15.09 85.05 126.71
16" NPS400 16.0 406.4 0.656 16.66 107.5 160.12
18" NPS450 18.0 457.0 0.75 19.05 138.17 205.74
20" NPS500 20.0 508.0 0.812 20.62 166.4 247.83
22" NPS550 22.0 559.0 0.875 22.23 197.41 294.25
24" NPS600 24.0 610.0 0.969 24.61 238.35 355.26

CS Pipe Schedule Chart in mm


carbon steel pipe schedule chart in mm

Carbon Steel Pipe Wall Thicknesses Other Than Schedules

Nominal
Pipe
Size
OD
in
inches
Intermediate Walls
OD — Wall x Wall = Weight per Foot of Steel Pipe (P.E.)
1 1.315 0.065
0.87
0.109
1.40
                         
1-1/4 1.660 0.065
1.11
0.109
1.81
                       
1-1/2 1.900 0.065
1.27
0.109
2.08
                        
2 2.375 0.065
1.60
0.083
2.03
0.109
2.64
0.120
2.89
0.190
4.43
0.254
5.75
0.281
6.28
               
2-1/2 2.875 0.083
2.47
0.109
3.22
0.120
3.53
0.188
5.40
0.217
6.16
0.308
8.44
               
3 3.500 0.083
3.03
0.109
3.95
0.120
4.33
0.125
4.51
0.156
5.57
0.188
6.65
0.250
8.68
0.254
9.66
0.281
9.67
0.375
12.52
         
3-1/2 4.000 0.083
3.47
0.109
4.53
0.120
4.97
0.125
5.18
0.156
6.41
0.188
7.66
0.250
10.02
0.262
10.46
0.281
11.16
           
4 4.500 0.083
3.92
0.109
5.11
0.120
5.61
0.125
5.85
0.141
6.56
0.156
7.24
0.172
7.95
0.188
8.67
0.203
9.32
0.219
10.02
0.224
10.23
0.250
11.36
0.290
13.04
0.312
13.97
0.375
16.52
5 5.563 0.083
4.86
0.109
6.35
0.125
7.26
0.134
7.77
0.156
9.02
0.188
10.80
0.219
12.51
0.281
15.87
0.312
17.51
0.344
19.19
       
6 6.625 0.109
7.59
0.125
8.68
0.134
9.29
0.141
9.76
0.156
10.78
0.172
11.85
0.188
12.94
0.203
13.92
0.219
15.00
0.250
17.04
0.312
21.06
0.344
23.10
0.375
25.03
0.500
32.71
0.625
40.05
8 8.625 90.109
.91
0.125
11.35
0.156
14.11
0.172
15.53
0.188
16.96
0.203
18.28
0.219
19.68
0.264
23.57
0.312
27.73
0.344
30.45
0.375
33.07
0.438
38.33
0.562
48.40
0.625
53.40
10 10.750 0.156
17.65
0.172
19.43
0.188
21.23
0.203
22.89
0.219
24.65
0.279
31.23
0.344
38.27
0.350
38.88
0.400
44.22
0.438
48.28
0.562
61.15
0.625
67.58
0.812
86.18
 
12 12.750 0.172
23.11
0.188
25.22
0.203
27.23
0.219
29.34
0.281
37.46
0.312
41.48
0.344
45.62
0.438
57.65
0.625
80.93
0.750
96.12
0.812
103.5
0.875
111.0
1.500
180.2
1.750
205.6
2.000
229.6
14 14.000 0.188
27.73
0.203
29.91
0.219
32.26
0.281
41.21
0.344
50.22
0.406
58.94
0.469
67.84
0.562
80.66
0.625
89.28
0.688
97.81
0.812
114.4
0.875
122.7
2.000
256.56
2.125
269.76
2.500
307.34
16 16.000 0.188
31.75
0.203
34.25
0.219
36.95
0.281
47.22
0.344
57.57
0.406
67.62
0.438
72.86
0.469
77.87
0.625
102.6
0.750
122.2
0.812
131.7
0.938
150.9
1.125
178.7
1.618
248.5
2.000
299.0
18 18.000 0.188
35.76
0.219
41.59
0.281
53.23
0.344
64.93
0.406
76.36
0.469
87.81
0.625
116.0
0.688
127.2
0.812
149.1
0.875
160.0
1.000
181.6
1.125
202.8
1.250
223.6
1.500
264.3
20 20.000 0.219
46.27
0.281
59.23
0.312
65.66
0.344
72.28
0.406
84.04
0.438
91.59
0.469
97.92
0.625
129.3
0.750
154.2
0.875
178.7
1.000
202.9
1.250
250.3
1.375
273.5
24 24.000 0.281
71.25
0.312
79.01
0.344
86.99
0.406
102.40
0.438
110.32
0.469
117.98
0.625
156.0
0.750
186.2
0.875
216.1
1.000
245.6
1.250
303.7
1.312
317.9
1.500
360.5
 
26 26.000 0.250
68.82
0.281
77.26
0.344
94.35
0.406
111.08
0.438
119.69
0.469
128.00
0.562
152.83
0.625
169.4
0.656
177.6
0.688
186.0
0.750
202.3
0.875
234.8
1.000
267.0
1.188
314.8
 
30 30.000 0.281
89.19
0.344
109.0
0.406
128.3
0.438
138.3
0.469
147.9
0.562
176.7
0.656
205.6
0.750
234.3
0.875
272.2
1.000
309.7
1.250
383.8
       
36 36.000 0.281
107.2
0.312
119.03
0.344
131.0
0.406
154.3
0.438
166.4
0.469
178.0
0.562
212.7
0.656
247.6
0.688
259.5
0.875
328.2
1.000
373.8
1.250
463.9
1.500
552.7
   
42 42.000 0.312
138.9
0.344
153.0
0.406
180.4
0.438
194.4
0.469
208.0
0.562
248.7
0.625
276.2
0.656
289.7
0.688
303.6
0.750
330.4
0.875
384.3
1.000
437.9
1.125
491.1
1.250
554.0
48 48.000 0.406
206.4
0.438
222.5
0.469
238.0
0.562
284.7
0.625
316.2
0.656
331.7
0.688
347.6
0.750
378.5
0.812
409.2
0.875
440.4
0.938
471.5
1.000
502.0
1.125
563.2
1.250
624.1
 

How is a Pipe Schedule Calculated?

The pipe schedule calculation is simply the design pressure and allowable stress multiplied by 1000, making a value that dictates the pipe's wall thickness.
The pipe schedule number (SCH) is calculated as:
SCH=1000*(P/S)
For instance, a pipe has a design pressure of 1000 psi and an allowable stress of 20,000 psi; it will be of schedule number 50 (1000 multiplied by reverse reciprocal parentheses (1000 divided by 20,000)).

Importance of Pipe Schedules

Pipe Schedules help ensure the safety and effectiveness of piping systems. They also enable:

  • Determine Pipe Strength : The pipe schedule directly relates to the strength of a pipe, which is very important to bear the loads relevant to internal and external pressures.
  • Prevent Leaks and Failures: A pipe that is represented by this schedule number tends to be less prone to leakage or bursting especially under pressure, thus effectively eliminating the prices that accompany these.
  • Optimize Pipe Size: Pipes sizes are available in schedules which makes it easier for an engineer to choose the right pipe diameter to use for a given application, depending on the pressure, force and cost of the pipe material.
  • Ensure Compliance: Standards like ASME B36.10 and ASME B36.19 place regulations on pipe schedules just to make sure they work accordingly in the context of safety and performance.
  • Ensure Compliance: Standards like ASME B36.10 and ASME B36.19 place regulations on pipe schedules just to make sure they work accordingly in the context of safety and performance.
  • Ensure Compliance: Standards like ASME B36.10 and ASME B36.19 place regulations on pipe schedules just to make sure they work accordingly in the context of safety and performance.
  • Cost Analysis : Choosing the right pipe schedule number is important because it affects the overall cost of a project. Higher schedule numbers mean thicker pipe walls, which need more material. Thicker pipes are more expensive to make and install, increasing both material and labour costs. It's crucial to find the right balance between cost and safety when selecting the schedule.

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