55.2-59 TIG weld stainless exhaust purge

[jwhotrod]

Originally Posted by FAKKY

Compression bender ? Just mean the bend of the tube ?

if you go to the local exhaust shop and they bend pipe for you, they use a compression bender. That bender wrinkles or reduces the pipe diameter in the bend, because the internal diameter is not supported with a mandrel. the mandrel bends you buy are bent with a internal mandrel or "pig" that follows the bender thru the bend and supports the diameter for smoother bends.