Originally Posted by Gino
Hello Gadge and Bonnar Bloke
Thanks for the info on the pipe etc, local steel merchant will sell me a metre but the id od and wall thickness they told me didn't make sense,if needed I was going to check it out.
No worries Gino.
Standard black/gal waterpipe is 'Schedule 40', and you wouldn't be able to be certain that the ID would clean up to size for this job.
32mm NB Schedule 80 is thicker wall, but same OD - that's how it works with pipe sizes [bassackwards though that may seem at first glance], so that the external threading diameter remains constant. That's why it's called 'nominal bore' sizing...

Simply stating the actual OD as the size, as is done for tubing, would really make much more sense, but I'd say it's just one of those anomalous historical legacies that still exist in the metal trading world.

Cheers,
Gadge

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