Automatic orbital welding

The tubing and other components (valves, elbows, tees, etc.) are welded for the most part by the automatic orbital welding machines. Such machines work... 

The largest possible number of connections should be automatic TIG orbital welding without external hller wire (butt-welded). Manual welding or tri-clamp connections are authorized case-by-case, but have to be minimized and reserved manual welding is needed for inaccessible orbital welding, tri-clamp for sensors connections, and moving equipment (pump, hose pipe, etc.). 

To perform automatic TIG orbital welding, the use of a machine with a printout of the welding parameters is preferable. Develop a set of acceptable... 

Process piping is typically all welded and nitric acid passivated. Welding is done with manual TIG or semi-automatic orbital welders. An argon or helium gas purge should be used during welding to prevent the formation of oxides and achieve fiill-weld penetration. 

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