Pipeline welding process

The invention provides a pipeline welding process. The pipeline welding process comprises the steps of welding a root layer through manual welding and welding a filling layer and/or a cover surface layer through an automatic welding machine. The welding process provided by the invention has the adva...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	BAO LIANSHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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