Mandrel bending of tube on precision tooling eliminates humps, wrinkles and wall collapse providing better internal gas / liquid flow volume. Autobend have the largest range of bend tool sets in NZ to suit EWS tube, pipe and RHS — from tight (1×d) to large centre line radii. Our experienced staff operate 7 rotary draw benders from 6mm to 101mm OD. We can scan samples or enter X,Y,Z co-ordinates plus bend clockwise, anti-clockwise, dual stack or “bend + roll.”
We can reverse engineer your existing bends.
Two dedicated tube co-ordinate measuring tables calculate X,Y,Z data from your sample or CAD file.
They then convert to Y,B,C's, compensate for springback and elongation.
Reverse engineering provides accurate QA reports with window tolerance.
Send us a message or upload a file for quoting and we'll get back to you as soon as we can!
We can roll 25mm to 76mm round tube, square and flat for continuous curves and large radius bends.
Our CSM80 and CSM100 machines can bend and roll the same tube with a mandrel inside.
For information on other roll forming, see our sectional rolling page
To bend tube on a tight radius (CLR) you need a complex tooling set with a mandrel inside the tube, a wiper die to match the bend die and pressure dies to guide tube into the bend die.
We have New Zealand's largest range of bend tool sets to help you get your job done.
The bend die and clamp sections are machined to suit tube OD and required centre line radius (CLR).
A wiper die removes humps on the inside radius. Its "feathered edge" suits tube OD and CLR.
Mandrel design is based on the tube OD, material, wall thickness, bend die CLR and degree of bend.
Our expert staff operate two dedicated tube measuring centres that can scan degree of bend, rotation and distance between bends to four decimal points. Our GTube software compensates for springback, elongation, stretch and pre-cut requirements.
The resulting instructions for our CNC benders provides fast, accurate and cost-effective production of mild steel, stainless and aluminium tube bends.
We can also programme variable radii when rolling tubes as well as produce straight and concentric coils and provide accurate QA reports with window tolerance.
This is a guide only of our standard tool sets.
Call our sales team today to discuss the most cost effective tube and tooling options.
