TPT March 2012

CONTENTS

V OL 25 N O 2

M ARCH /A PRIL 2012

146

202

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Tube Düsseldorf 2012 Tube Düsseldorf is the biennial international tube and pipe trade fair and the world’s biggest and best showcase for the tube and pipe industry and those serving it. Those heading for Düsseldorf for Tube 2012 will meet old friends and make new ones, will strengthen their command of current industry practice and explore tomorrow’s methods today.

Straightening technology and equipment Only a perfectly straight tube can be reliably and faultlessly bent and for the millions of profiles, angles, fork tubes, bar channels and a host of other intricate shapes that are needed all around the world each day that makes it an extremely important process. The suppliers reviewed here are aware that straightness – trueness – always comes first.

Handling, bundling, packaging and logistics The word “handling”, with its suggestion of manual labour, may seem outmoded in a period when an industrial robot can feed blank hydroformed steel tubes into one end of a computerised injection moulding machine and collect them at the other, but there are many different challenges presented by this process, all of which are catered for in this feature.

224 Induction bending takes an innovative route By Dipl.-Ing. Andreas Diepgen & Hans-Peter Klos, Siemens AG, Germany 222 Maximising output in high-frequency tube and pipe welding By Bjørnar Grande and Olav Wærstad, EFD Induction, Norway