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October 04, 2005



A small correction, the seemless tube production process does not involve flat stock being rolled and welded. Rather it involves using a mandrel to pierce a red hot cylinder of steel while it passes through a set of rollers. The resulting tube is then passed through many more rollers to produce the diameter required.


I think you are right. I have seen a copy of the original patent, so I'll have to read it and correct this post. Thanks for the comment.


Is the drawing supposed to be related to the patent? Because the drawing seems to deal with a suspension system. I just noticed the dates are different. So why is the drawing here?

The drawing is there because its hard to get an interesting looking drawing of a tube manufacturing process, and the original patent doesn't have any drawings. The link to the tube process is that the tubes were primarily used in the bicycle industry at first.

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