It's welded and very strong. At least the stuff I've purchased has been.
Much of the top rail for chain link fencing MAY be welded. But I
have installed some that was NOT. It LOOKED OK at first glance
but upon close inspection it was rolled and then hot-dipped
galvanized. The zinc gave it the "appearance" of pipe. But it
was not structural. Under relatively small loads it would split
along the seam.
Just a word of caution about chain link fence rail. Not to mention
that water pipe is NOT a structural element and you will not find
structural specs on it other than burst strength.
Nothing beats doing the engineering and selecting the proper material.
--John W0UN
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Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
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