Hazen-Williams "C' factor 1

[suraiya]

Hi,

Can anyone who is familiar with the Hazen-Williams equation for liquid line sizing tell me the most appropriate value of the "C" factor for duplex stainless steel piping materials?

rgds,
Suraiya

 

[vpl]

Suraiya

Crane Flow of Fluids gives 140 for new steel pipe. Lindeburg's "Mechanical Engineering Reference Manual" says 150 for stainless Patricia Lougheed