Method for fixing cylindrical elements on an elongated tube by resistance welding and machine for carrying out this method
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Method and apparatus for feeding studs to an electrode of a stud welding machine
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Bracket for a welding torch in machines for manufacturing finned tubes
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Device for guiding a belt in a machine for producing tubes with helical ribs
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Procedure of electric welding of protective on a metal piece and device for the put into practice of this procedure. (Machine-translation by Google Translate, not legally binding)
GB1181128A
Method of and Apparatus for Making Slotted Strips
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Process for the production of a finned pipe for heat exchangers and apparatus for the production of a finned pipe formed by this process
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Device for tacking the weld seams on the front of pipes
