Ball And Joint Shower Arm Adapter How To Get A Ball-tip Off A Shower Arm? (is It Welded On???)?

How to get a ball-tip off a shower arm? (is it welded on???)? - ball and joint shower arm adapter

I moved into a Victorian house and the shower head was disgusting and corrosive, so I picked it up. Below is a ball joint at the end of the shower arm, I thought it would be easy to remove - not so much.

I went to three hardware stores and tried:

- With channel locks, keys wrapped (with tape on the ends and without)
- Soak it all in the pursuit of oil high penetrance, or a solution, stating that solve things and free rusted joints. not. Soak for 10 minutes i have not then 20 minutes for the second time something is lost.

I'll tell you. NO is emerging. and the blockade of key-chain into the metal as the metal is nowonly peeling or chipping Every time I reach and drive.

welded?
Can I some kind of adapter you can be overtaken put the ball joint?

I Can not Take the pipe together, have eaten at. move.