The Ryerson Tull steel stock list gives 2" od.x 1/4" wall tube
a weight per foot of 4.673. At 20' long, that is 93.46 pounds.
Some alloys do vary and I don't have the chromolly listing but
nickel and chrome alloys typically weigh more than carbon steel.
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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