Improvements in or relating to butt welding apparatus employing induction heating
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Induction welding apparatus
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Improvements in methods and means for butt welding work-pieces having opposed lips
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Improvements in or relating to butt welding the edges of gapped metal tubes
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Butt welding of metal tubes
DE1077349B
Electric welding equipment
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Electric induction welding process for metallic workpieces to be joined along a straight gap
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Apparatus for welding by means of electromagnetic induction heating
ES202733A1
Procedure and machine for continuous welding by electromagnetic induction, using high frequency alternate current (Machine-translation by Google Translate, not legally binding)
DE973894C
Electric induction welder
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Induction welding machines
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Methods and means for butt welding tubular members
