MANUFACTURING DEVICE FOR SPIRAL STEEL PIPE BY COMBINED WELDING

PURPOSE:To perform forming up to side edges of a beltlike steel sheet and to prevent forming of a bamboo nodular joint on the pipe by pushing up pressure rollers for electric resistance welding arranged on a welding joining part. CONSTITUTION:The spiral spiral steel pipe is manuafactured by a combin...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	TSUTSUMI MASAHITO, YAMADA KATSUHARU, YOSHIMURA MASAYOSHI, AMANO YOSHITAKA
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PUNCHING METAL SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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