Jeff,
I am presuming by "Lines" you do not mean hoses or hose fittings.
Something that you may want to consider is that bead blasting will
remove metal which will reduce the resistance strength of the line wall
to internal pressure.
Typical line pressures for normal stopping: Approximately 1000 PSI.
Typical line pressure for emergency stopping: Approximately 2000 PSI+.
These figures are from GM Brake Technician School.
One more thing. Never install a compression fitting in a brake line to
save a kinked or corroded section.
Compression fittings are typically rated @~750 PSI. They can fail with
catastrophic results.
My .02.
-Vince
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