Line Pipe Schedule 120 Dimension, Weight and Thickness Chart
Line Pipe Schedule
The term “schedule” in Line Pipe Schedule 120 Dimension, Thickness, and Weight refers to the wall thickness of the pipe used in the oil and gas industry.
As the wall thickness increases, the schedule number rises. Higher schedule pipe such as 100 and 120 have the same exterior diameter as 40, 6, and others. However, the higher schedules 100 and 120 have extra thickness in their interiors.
The American Society of Mechanical Engineers (ASME) committee developed the standard pipe schedules to save cost. The most popular schedule is 30, while the least used are 5, 60, 100, 120, and 140. The pipe schedule has the following approximate value:
Schedule Number = (1,000) (P/S)
For instance:
P = PSI or internal working pressure
S = allowed stress or PSI of the construction material
To determine the pipe schedule:
Inside Diameter / Wall Thickness
The pipe schedule 120 is a thickness designator that means schedule 120 is thicker than schedule 100. An increase in service pressure can increase the pipe’s schedule.
Relationship among Dimensional Values
The increase in nominal size also increases the outside diameter (mm), wall thickness (mm), and weight (lb/ft) or (kg/m), except for the outside diameter (inches) that stays the same.
Line Pipe Schedule 120 Dimension, Weight and Thickness Chart
The table for Line Pipe Schedule 120 Dimension, Thickness and Weight is useful for determining the exact numerical measures or dimensions such as the nominal size, outside diameter, wall thickness, and weight of the Pipe Schedule 120.
Line Pipe Schedule 120 Dimension, Weight and Thickness Chart
| Nom. Size (in) | OD (in) | OD (mm) | Wall Thkns (in) | Wall Thkns (mm) | Wgt (lb/ft) | Wgt (kg/m) | |
|---|---|---|---|---|---|---|---|
| wdt_ID | Nom. Size (in) | OD (in) | OD (mm) | Wall Thkns (in) | Wall Thkns (mm) | Wgt (lb/ft) | Wgt (kg/m) |
| 1 | 4 | 4.5 | 114.3 | 0.438 | 11.13 | 19 | 28.32 |
| 2 | 5 | 5.563 | 141.3 | 0.5 | 12.7 | 27.04 | 40.28 |
| 3 | 6 | 6.625 | 168.3 | 0.562 | 14.27 | 36.39 | 54.2 |
| 4 | 8 | 8.625 | 219.1 | 0.719 | 18.26 | 60.71 | 90.44 |
| 5 | 10 | 10.75 | 273 | 0.844 | 21.44 | 89.29 | 133.06 |
| 6 | 12 | 12.75 | 323.8 | 1 | 25.4 | 125.49 | 186.97 |
| 7 | 14 | 14 | 355.6 | 1.094 | 27.79 | 150.79 | 224.65 |
| 8 | 16 | 16 | 406.4 | 1.219 | 30.96 | 192.43 | 286.64 |
| 9 | 18 | 18 | 457 | 1.375 | 34.93 | 244.14 | 363.56 |
| 10 | 20 | 20 | 508 | 1.5 | 38.1 | 296.37 | 441.49 |
| 11 | 22 | 22 | 559 | 1.625 | 41.28 | 353.61 | 527.02 |
| 12 | 24 | 24 | 610 | 1.812 | 46.02 | 429.39 | 640.03 |
Line Pipe Schedule 120 Dimension, Weight and Thickness Chart
| Nom. Size (in) | OD (in) | OD (mm) | Wall Thkns (in) | Wall Thkns (mm) | Wgt (lb/ft) | Wgt (kg/m) | |
|---|---|---|---|---|---|---|---|
| wdt_ID | Nom. Size (in) | OD (in) | OD (mm) | Wall Thkns (in) | Wall Thkns (mm) | Wgt (lb/ft) | Wgt (kg/m) |
| 1 | 4 | 4.5 | 114.3 | 0.438 | 11.13 | 19 | 28.32 |
| 2 | 5 | 5.563 | 141.3 | 0.5 | 12.7 | 27.04 | 40.28 |
| 3 | 6 | 6.625 | 168.3 | 0.562 | 14.27 | 36.39 | 54.2 |
| 4 | 8 | 8.625 | 219.1 | 0.719 | 18.26 | 60.71 | 90.44 |
| 5 | 10 | 10.75 | 273 | 0.844 | 21.44 | 89.29 | 133.06 |
| 6 | 12 | 12.75 | 323.8 | 1 | 25.4 | 125.49 | 186.97 |
| 7 | 14 | 14 | 355.6 | 1.094 | 27.79 | 150.79 | 224.65 |
| 8 | 16 | 16 | 406.4 | 1.219 | 30.96 | 192.43 | 286.64 |
| 9 | 18 | 18 | 457 | 1.375 | 34.93 | 244.14 | 363.56 |
| 10 | 20 | 20 | 508 | 1.5 | 38.1 | 296.37 | 441.49 |
| 11 | 22 | 22 | 559 | 1.625 | 41.28 | 353.61 | 527.02 |
| 12 | 24 | 24 | 610 | 1.812 | 46.02 | 429.39 | 640.03 |
Dimensional Values
The Thickness, Weight Dimension Table for Line Pipe Schedule 120 constitutes the dimensional values (in columns) for each nominal size (inches) in rows.
The nominal size (inches) refers to the non-approximate size for the purpose of description or trade. In piping, it’s called the nominal pipe size that is equal to the inside diameter (ID). An increase in wall size decreases the inside diameter.
The outside diameter (inches) is the pipe measurement from left to right or top to bottom that originates from the pipe’s outer wall.
Outside Diameter = Circumference / pi (3.1415)
Wall thickness (inches and millimeters) is specified by the term schedule. The wall thickness is the measurement (inches) of the pipe’s wall.
Wall Thickness = Inside Diameter – Outside Diameter / 2
Weight refers to the pipe’s weight measured in pounds per feet or kilograms per meter. Here is the formula to calculate it:
A copper tube, for instance, has a formula of (Outer Diameter – Wall Thickness) x thickness (mm) x -0.02796 x length (m).
Line Pipe Schedule 120 Dimension, Weight and Thickness Chart Abbreviations:
- OD – Outside Diameter
- in – inches
- mm – millimeter
- lb/ft – pounds per feet
- kg/m – kilogram per meter
- Wgt – Weight
- Nom. Size – Nominal Size
- Wall Thkns – Wall Thickness
Go here if you are looking for the Line Pipe Schedule 100 Dimension, Weight and Thickness Chart.
