bending is a metal forming process
that bends a tube to a desired radius
and angle. This process is mostly used
for frames, handrails, benches, and roll
cages but can be used in many other
The most common form of tube bending
is called rotary draw bending. This type
of bending uses a set of dies, which can
form a tube to a constant center-line
radius. This requires a unique set of
tools for each tube and desired radius.
The use of a computer control enables
the machine to reproduce numerous
complex bends with extreme accuracy.
When bending tube
a common concern is tube wrinkle and
collapse. Rotary draw bending uses a
mandrel on the inside of the tube to
prevent the material from collapsing and
a wiper die on the outside to prevent
wrinkling. This process creates a very
uniform repeatable bend.
Pine No. 2 Bender – 3.0” OD Tube