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B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
B23K11/00—Resistance welding; Severing by resistance heating
B23K11/24—Electric supply or control circuits therefor
B23K11/25—Monitoring devices
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FR1166315D1956-02-161957-02-12
Method for testing welded joints obtained by resistance butt welding, in particular for testing welded joint pipes
ExpiredFR1166315A
(en)
Perfected apparatus of longitudinal thermoplastic pipelines in line or with a selected angle. (Machine-translation by Google Translate, not legally binding)