Nominal Pipe SizeNPS (in)DN (mm)


Outside DiameterWall Thickness
(in)(mm)(in)(mm)


Inside DiameterFlow Area
(in)(mm)(ft)(in2)(mm2)(ft2)


Yield StrengthUltimate (Tensile) StrengthUltimate burst pressureInternal pressure at minimum yield
(psi)(MPa)(psi)(MPa)(psi)(kPa)(psi)(kPa)


WeightAbsolute
Roughness (in)
Friction factor in zone
of complete turbulence, fT.
(lb/ft)(kg/m)
The data in the above table is based on ASME/ANSI B 36.10 Welded and Seamless Wrought Steel Pipe. Friction factor is calculated from numerical solution of Colebrook-White equation.

Burst pressure and minimum yield pressures are based on ASTM Specification A53 Grade A pipe with minimum tensile strength of 48,000 psi and yield strength of 30,000 psi.