Metal needs to be redhot before it will bend more 'easily'.

Do you want to bend the 4 pipes at once?
I don't think you will be able to keep all the pipes redhot at a certain point before you can start pulling.


Also reminder the tubes are thinwall, so they cool fast, but you can also burn through them if heated too much in one area.

But... do you really want to handle a hot flametorch in your enginebay like that?