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Reference Table Details

Barlow's Formula

Barlow's Formula

Barlow's Formula is an easy method for finding the relationship the internal fluid pressure and stress in the pipe wall. This formula is also known as the Outside Diameter Formula. This formula predicts bursting pressures that are within actual test bursting pressures.

 

Where:
P = internal units pressure, psi
S = unit stress, psi
D = outside diameter of pipe, in.
t = wall thickness, in.

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