Re: Black ABS

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "C. Sibley" <a37chevy@xxxxxxxxx>

Not sure if that describes the pipe that I have, it's
schedule 40, rated for pressure, and is hard and solid
all the way through...

It also passes the static electricity test if I rub my
arm agianst it.



> The problem is not only the carbon black used for
> pigment, but that
> ABS pipe is foam cored.  It's actually a foam with
> skins on inside
> and outside.  It's DWV (Drain, Waste, Vent) which
> doesn't have to
> hold any significant pressure.
>
> Your problem is that the foam is also a poor
> insulator, being mostly air.