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Re: [TowerTalk] 2" O.D. Pipe???

To: "Tower and HF antenna construction topics." <>
Subject: Re: [TowerTalk] 2" O.D. Pipe???
From: jimlux <>
Reply-to: "Tower and HF antenna construction topics." <>
Date: Thu, 18 Mar 2010 06:15:14 -0700
List-post: <">> wrote:
> Hello All,
> I went in search of 2 Inch O.D. pipe
> on the internet!!
> Guess what?  I can't find any!!!!
> The outside diameter of pipe is
> either 1.9" O.D. for 1.5 inch pipe or
> 2.375" O.D. for 2 inch pipe!!!
> Nothing in between....
> What am I missing??

Pipe vs tube

pipe is supplied in "nominal" sizes (e.g. 1" pipe has no dimension that 
happens to be an inch).. you have to go look up in tables what the 
actual dimensions are for pipe.. it deepends on material (steel,iron, 
copper, aluminum, etc.), the pressure rating (schedule 40,80, 160, etc.)

tubing, on the other hand, is dimensionally true.  If you order 2" 
tubing, it will be 2" OD.  You can recognize tubing because it will be 
specified as a diameter and a wall thickness (e.g. 2"x1/4" tubing)

There *is* tubing sold in odd dimensions, generally to match the OD of 
pipe (for handrails and scaffolding: Hollaender SpeedRail for instance)

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