Routing requirement

Hi All,

We are working in the project based environment where based on the finished good we need to alter the standard operation.

Like for example :-

Let say we have Finished good 'Fin1' for this finished good we need to do welding of two components for length 10m which takes 1 hour and for the  Finished good 'Fin2' we need to do welding of same two components for length 20m which takes 2 hours. Now we do not want to create a new standard operation for the same process but would like to map this requirement.

Any suggestions to map this???