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29th May 2022, 11:00 PM #1Most Valued Member
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Large scale welding of galvanised C section channel
I've recently been mig welding base plates to a few 150 x 65 x 1.5 galvanised channels, I spent a lot of time carefully grinding the gal from the weld area.
Doing this caused me to ponder how the guys that do this for a living - shed makers for instance - cope with gal removal.
Do they have equipment that quickly takes off the gal, maybe a specialised sandblaster, or do they not worry about removal?
Do they leave the gal on and use special mig wire, different welding techniques, and of course PPE to get around the problems that vaporising zinc can cause?
Read the full thread at metalworkforums.com...
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