I've read stories of them being used for presses and even
for forming motorcycle headers from flat edge welded sheet
by internal pressure, kinda like blowing up a balloon.
Some of them have pressure capabilities of 4000-6000 psi,
I've heard. This is a little more than the typical "farmer"
hydraulic pressure standard of 2100 psi. They usually don't
have the volume flow capabilities of the lower pressure
pumps.

Gunner wrote:

Can an automotive power steering pump be used for hobby uses such as a
press?