Stuart wrote:
Does 10mm pipe solely come in coils or are there sources of straight
lengths .If not is there a good way of straightening it neatly .?

Uncoil roughly.

Attach one end securely to something.
Attach the other end securely to a movable something.
Move the movable something away from the immovable something until
the distance is .5% or so above that when the pipe got taught.