I do not believe that is accurate. Black iron pipe is essentially the
same as galvanized pipe. Neither are rated as structural material.
Proper material is not pipe, but rather structural steel tubing, the key
word being "structural".
Ken WA8JXM
On 28/06/2015 16:22, J Chaloupka via TowerTalk wrote:
Materials, if you can get it, ungalvanized pipe, comonly called "black pipe",
it is a better quality than galvanized, which is typically full of defects and camoflaged
by the galvanizing.
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