i need some opinion pls..

by jay

i am about to take a trade test involving a 2 inch schedule 40 pipe doing a SMAW-GTAW combination. can you guys help me out, i need some opinions for the settings for my TIG root pass.


if i had the choice, i would probably gap it about 1/8" and use a 3/32" rod with about 65 or 70 amps and dip keyhole the root with a little side to side action tying in the walls.
a very light land filed on the edge,,,like about 1/32" or even no land would be good.

a 3/32" electrode will be big enough.

anyone else got some tips???

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