NEW GMAW DOWN-HILL ROOT PROCESS

by Mary Brown
(Forest City, NC USA)

What wire feed speed and voltage should I use with the GMAW process to weld a root-pass in a schedule 80 pipe with .035 wire using the new GMAW down-hill process?

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if 75/25 ar/co2 is used, 17-19 volts and 200-250 ipm is a good start.
gap, land, bevel, etc all make a difference.

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