Barlow's Formula
Barlow's formula is commonly used to determine bursting pressures of pipe and tubing:
P = 2 s t / [(do - 2 t) SF] (1)
Where:
P = max. working pressure (psig)
s = material strength (psi)
t = wall thickness (in)
do = outside diameter (in)
SF = safety factor (in general 1.5 to 10)
Barlow's Formula is based on ideal conditions at room temperature and is an estimate only
