I'm trying to use pipe routing on SW18 with some very large pipes (700NB), first of all I can't find a pipe this big in the standard library, secondly when I try and drag and drop the next best flange (24') onto my model I get an error message saying 'Please specify valid routing component(s) to start the route', if I use a smaller flange there is no problem. Can anyone suggest a reason and a solution to this problem? cheers.

Lawrence.