Some notes for the metric pipe friction chart shown below

  • The chart is calculated for fresh water at 15°C.
  • Use actual bores rather than nominal pipe size.
  • For stainless steel pipe multiply the numbers by 1.1.
  • For steel pipe multiply the numbers by 1.3
  • For cast iron pipe multiply the numbers by 1.7
  • The losses are calculated for a fluid viscosity similar to fresh water.

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  • On February 26, 2018