Early correlations of wall static pressure distribution along pipes, through whicha Newtonian fluid flows with-unguided vane generated-swirl component, havebeen generalized. Generalization includes another - tangential tap generated -swirl type in addition to fluids other than Newtonian. These correlations are ofgreat benefit for many applications provided knowledge of the fluid rheologicalproperties as well as the conventional friction factor correlations. An expressionfor swirl number evaluation has been introduced in order to make use of theavailable correlations. Application on non-Newtomian power law fluids has beencarried out and the correlation represented well the available experimental datafor both laminar and turbulent flow conditions. Application on drag reductionflow, under conditions of maximum drag reduction, has shown that thepercentage drag reduction increases as the pipe length increases, i.e., as the swirlintensity decreases.