
- The Pipe Is Clamped
The straight pipe or tube is placed into the machine and held tightly by:
Clamp die
Pressure die
Bending die
Mandrel
This prevents slipping during bending.
- The Bend Die Rotates
A round bending die rotates and pulls the pipe around its radius.
This creates the bend angle:
45°
90°
180°
custom angles
The bend radius depends on the tooling size. - Mandrel Support (Optional)
For thin-wall tubes, a mandrel is inserted inside the pipe.
The mandrel helps:
prevent collapse
reduce wrinkles
maintain roundness
This is important for:
automotive exhaust pipes
furniture tubes
aerospace tubing
hydraulic tubes
- CNC Control System
Modern CNC pipe bending machines use computer control to automate:
bend angle
rotation
feed length
multiple bends
The operator inputs the program, and the machine performs repeatable bending automatically.
Typical CNC axes include:
Axis Function
Y Feed pipe length
B Rotate pipe
C Bend angle - Finished Bent Pipe
After bending, the finished part may be used in:
automotive parts
furniture
construction
HVAC
medical equipment
shipbuilding
aerospace

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