[TowerTalk] Source for 2" OD Mast

[Jim Lux]

On 1/4/13 2:17 PM, W2GR at aol.com wrote:
> I have been using 1 1/2 galvanized pipe for years on the tower with never a
>
>
> So would I mount the Pro-67 12 feet up on it?..well no....so I guess it all
>   depends what you want/need to have set up may require Chrome moly or what
> ever...but for my needs and price wise...Pipe works for me...
>
>>
>> Yeah.   Never use pipe.    It is designed to be bent.   What you want is
>> 2026 DOM or  chrome moly "tubing".
>>
>


It depends on what your goal is.. pipe may be softer (lower yield) than 
some CrMo tubing, but that doesn't mean it's not strong enough. It's all 
about the loads and the size of the tubing.  There's a fair amount of 
construction that uses (somewhat larger) pipe as structural members. 
(where pipe is used here to mean something rolled and welded, as opposed 
to drawn tubing).

It also is about what the consequences of a failure are.. if it's "mast 
bent, but antennas stay in the air and don't come crashing to the 
ground" that's different than "pipe fractures and hundreds of pounds of 
stuff hurtles to the ground followed by rotator cable and coax"