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FAQs

What factors should I consider when selecting a tube bending machine?

Some factors to consider include the material type, bending capacity (tube diameter and wall thickness), required bend quality and accuracy, production volume, material compatibility, and the machine’s features and capabilities. 

What are the different types of tube bending machines?

Common types include hydraulic, manual, and electric bending machines, CNC bending machines, rotary draw bending machines, and mandrel benders. 

What is the difference between a pipe and a tube?

A pipe has thicker wall and is a rougher material compared to a tube, which usually has thinner wall and is more consistently finished material. Pipes typically transport fluids and gasses, while tubes are used for structural purposes or applications that require precise outside diameters. There are differences in the manufacturing process when the material is made as well.

What is a bend radius?

The bend radius refers to the center line radius of a bend, typically expressed as a multiple of the tube’s outside diameter (OD). It’s the minimum radius that pipe or tube can be bent without kinking or being damaged.

What is the difference between a manual and CNC tube bender?

A manual bender requires manual positioning of the material during the bending process, while a CNC bender uses computer control for positioning the material precisely for repeatable bend positioning. 

What is a mandrel bender?

A mandrel is a tool inserted inside the tube during bending to help prevent or reduce wrinkling and deformation, maintaining the tube’s shape during the bending process. 

When is a mandrel bender necessary?

A mandrel is typically used when bending thin-walled tubes to reduce or prevent breaking or wrinkling. 

What is springback?

Springback is the amount a bent tube moves back (spring) toward its original shape after bending force is released.