what is a factor in pipe
The C-Factor is a measure of the smoothness of a pipe's interior. All pipes have a roughness that resists water flow and causes a drop in pressure under flowing conditions. The roughness is indicated by a factor we call the C-Factor. The higher the C-Factor, the smoother the inside of the pipe. New plastic pipe would have a very high C-Factor. Old steel pipe would have a much lower C-Factor because of the corrosion that may have occurred within the pipe.