Posted to rec.crafts.metalworking
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Holes in welded and galvanised structures
I've been looking at a few welded structures made from tubular steel and galvanised. They often include open holes (see pictures below). Anyone know why? I could make a few guesses but I'm not certain.
https://www.flickr.com/photos/138493...posted-public/
https://www.flickr.com/photos/138493...posted-public/
Chris
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