QuickLineSizer
Line sizing for liquid, gas and steam service — full Darcy-Weisbach and Colebrook-White hydraulics with compressible-flow and steam-property kernels behind it. Enter the duty and your selected line; it reports velocity, pressure drop, Reynolds number and flow regime, checks them against the governing line sizing guidelines, and recommends a compliant size.
A defensible line size in seconds, with the governing limit, the method and the erosion check all shown rather than assumed.