Pipe Schedule Charts

A pipe schedule chart is used to verify the dimension of the carbon steel and stainless steel pipe used in process industries. These charts covered sizes and schedules that give you the thickness of the pipe. ASME B36.10 and ASME B36.19 covered the dimensions of the Carbon steel and Stainless steel pipe respectively. But do you know what is Pipe Schedule?

What is Pipe Schedule?

The pipe schedule is the way pipe wall thickness is mentioned. To simplify the ordering of the pipe ASME committee has developed Schedule Number which is based on modified Barlow’s wall thickness formula.

Definition of Schedule Number: The schedule number indicates an approximate value of the expression 1000 x P/S where P is the service pressure and S is the allowable stress, both expressed in pounds per square inch.

You can see the pipe schedule calculation formula as below;

Schedule number = P/S

• P is the service pressure in (psi)
• S is the allowable stress in (psi)

So, what does schedule 40 means?

Schedule 40 is nothing but a pipe thickness designator. In simple word you can say that for a given material, schedule 40 pipe can withstand a certain amount of pressure.

Pipe Schedule Chart for Carbon Steel Pipe in Inches

Schedule 5, Schedule 10 and Schedule 30

Schedule 40, Schedule STD, Schedule 60, Schedule 80 and Schedule XS

Schedule 100, Schedule 120, Schedule 140, Schedule 160 and Schedule XXS

Pipe Schedule Chart for Stainless Steel Pipe in Inches

Pipe Schedule Chart for Carbon Steel Pipe in Millimeter

Schedule 5, Schedule 10 and Schedule 30

Schedule 40, Schedule STD, Schedule 60, Schedule 80 and Schedule XS

Schedule 100, Schedule 120, Schedule 140, Schedule 160 and Schedule XXS

Pipe Schedule Chart for Stainless Steel Pipe in Millimeter