Do you hear the name pipe schedule? And worried about that? If you are going to purchase or order the pipes & tubes for your application then you come across the term pipe schedule, which is one the
important pipe physical property. On the basis of this, you can select and purchase the required pipes for your application. In this article, we discussed what do you mean by pipe schedule? and different types of
schedules used in metal and manufacturing industries.
What is Pipe Schedules Mean?
Pipe Schedule is the term used to describe the thickness of the pipe. This is mainly indicated the wall
thickness of pipe with different internal pipe bore diameter. On the other hand, the outside diameter of
pipes is similar for a particular nominal pipe diameter. The pipe schedules are specified by different
industrial standards including ANSI, ASME, and API. The most commonly used pipe schedules are:
- Schedule 5
- Schedule 10
- Schedule 20
- Schedule 30
- Schedule 40
- Schedule 60
- Schedule 80
- Schedule 100
- Schedule 120
- Schedule 140 & more.
Definition of Pipe Schedule
The pipe schedule number indicates the calculated value of equation 1000 x (P/S). In which P is known as service pressure and S is allowable stress both are in psi (pounds per square inches). Let’s see the proper mathematical expression with examples.
Schedule Number = 1000 x (P/S)
Where, P = internal working pressure, (psi)
S = allowable stress (psi) of the material of construction at working conditions.
Example: Find-out the schedule number of pipe having working pressure 375 psi and allowable stress
Schedule Number = 1000 * (375/10,000) = 37.5 (approx. 40)
In this way, you can calculate the required pipe schedule for your application. Schedule Number 40 is the
most commonly used pipes in several industries like marine piping, industrial piping, processing
industries, and oil & gas refineries.
Pipe Schedule for Stainless Steel Pipe
Stainless Steel Pipes are most commonly used in the piping system. They are costly compared to carbon steel pipes due to excellent corrosion resistance properties. There are different types of schedule Stainless Steel Pipes are used in many industries. If you want to learn more about the pipe schedule or need any other information related to pipes, then feel free to contact us.