What Is Pipe Schedule?

Introduction

Pipe schedule is a common term used in piping design and pipe specifications. It refers to the thickness of the pipe wall and determines the pressure capacity of the pipe.

Short Answer

Pipe schedule is a standardized system that indicates the wall thickness of a pipe and its pressure rating.

Explanation

In piping systems, pipes are manufactured in different wall thicknesses. The pipe schedule number indicates how thick the pipe wall is compared to the pipe diameter.

Common pipe schedules include Schedule 10, Schedule 40, and Schedule 80. A higher schedule number means a thicker pipe wall and greater strength to withstand internal pressure.

For example, a Schedule 80 pipe has a thicker wall than a Schedule 40 pipe with the same diameter.

Pipe schedule is an important factor when selecting pipes for high pressure or high temperature applications.

Engineering Practice

Engineers select pipe schedules based on operating pressure, temperature, and design codes.

Standards such as ASME B36.10 and ASME B36.19 define pipe dimensions and schedule classifications used in industrial piping systems.

Conclusion

Understanding pipe schedule helps engineers choose pipes that can safely handle pressure and operating conditions in industrial plants.