Friction factor for stainless steel pipe?

Answer 1

for turbulent flow in pipes the friction factor depends on Reynold's number as well as the inside roughness of the material.

you could calculate the pipe inside roughness or the relative roughness by referring to the 'values of absolute roughness table'.

relative roughness =ε/D


where,
ε- absolute roughness.
D- inside diameter of the pipe.

for stainless steel the the absolute roughness value is 0.0018inches or 0.000045metre.

you could substitute the value in the above formula and find out the relative roughnes.


After doing this refer the Moody diagram to find out the friction factor for the values of Reynold's number and relative roughness.

ε