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Old 12-06-05, 08:27 PM
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Kogswell
Matthew Grimm / Flunky
 
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Originally Posted by baxtefer
is this how it has always been done?

back in the "old dayd" were the tubes actually welded closed with filler leaving a visible seam?
Seamed tubing must have gotten a bad rep *somehow*, no?

just curious.
My badly conveyed point was that the welding of the sheet into a tube is done via a process that most of us wouldn't recognize, since it doesn't include things like the addition of filler material.

Indeed, some tubing is made with a seam that's visible.

But modern DOM tubing is not that. It's processed post-welding and that processing is done to make the seam identical to the rest of the tube. Those tubes are placed into high-pressure and structural uses where they're called upon to preform without fail.

I think that there's a perception that seamless tubes are somehow better because they lack a seam. In fact seamless tubes have their own set of production irregularities.
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