A process in which tubing is drawn at room temperature through a die and over a mandrel to achieve its final size and to provide better surface finish, closer tolerances, lighter walls, smaller diameters, longer lengths, or a different combination of mechanical properties from those possible through not finishing or direct welding.
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Stop to notice the technology - by Dan Davis Keeping your nose to the grindstone could prevent you from noticing the rapid changes occurring in the world around you.
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