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Barlow's Calculator

The Barlow's calculator calculates ( P = (2*S*t) / D ) the relationship of internal pressure to allowable stress, nominal thickness and diameter of pipe.

Follow the directions to calculate your required needs:

1. Enter values for 3 of the 4 fields.
2. Click 'Calculate' for your answer

P (internal pressure):
psig
S (unit stress):
psi.
t (nominal wall thickness):
in.
D (outside diameter of pipe):
in.

Note: Do not use commas.