They select the tree rigid pipe and click to copy, select on tree after physical product and click paste special , have only one option (cloning) , When I edit a rigid pipe also changes the copied, they remain connected, and 'can treat and disconnected during the two rigid pipe differently, material etc.
I use the version of Catia and '3DEXPERIENCE r2015x, create my workbench with content and new physical product, my app is "piping and tubing 3d design", the command is "rigid pipe or tube"