On 14/03/17 18:33, James Wilkinson Sword wrote:
On Tue, 14 Mar 2017 18:24:38 -0000, Nightjar wrote:

So the pipe wall was so thick that the inner diameter was 0.5" and the
outer 0.825"? I could understand that with HEP pipe, but not metal.

Iron pipe is pretty thick walled.