Originally Posted by
TimothyH
Continental tubes have no lengthwise seams. They have what appear to be lengthwise seams but the lines are just part of the extruding process. They are actually made as a single, hollow tube.
I'm sure there are others manufactured similarly.
-Tim-
.
...Conti makes a solid product, even though they cost a little more. If you buy them from Ribble, they are about the best bang for the buck.