Re: Polyethylene pipe in UK

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Yurtle Turtle" <yurtle_t-at-yahoo-dot-com> 

We've used this type of HDPE in diameters of up to
48". Unfortunately, unlike the gas lines, most of what
we use is fairly thick walled. I've always wanted to
try and get a toroid made with the thinner walled
HDPE, since it's fairly flexible. Just cover it with
aluminum tape and you'd be in business.

Adam

--- Tesla list <tesla-at-pupman-dot-com> wrote:

 > Original poster: "David Speck"
 > <dave-at-davidspeckmd-dot-org>
 >
 > Jim,
 >
 > When they installed the yellow PE natural gas pipe
 > at my office 21 years
 > ago, they used a thermal bonding system.  The unit
 > looked something like a
 > smallish cutoff saw, but held the two pipe ends
 > together near each other,
 > and used some sort of internal heat source that
 > brought a metal plate to an
 > orange heat.  Both pipe ends were applied to the
 > plate for a few seconds,
 > and after softening to an appropriate amount, the
 > plate swung out and the
 > hot ends were pressed together with a clamping
 > mechanism.  It made a nearly
 > invisible joint, and the workers said it was strong
 > as the native pipe
 > itself.  The joiner was small enough to use in a
 > trench, and could attach
 > any sort of joint, Tee, or elbow as well.
 >
 > Dave
 >
 >
 > >Sort of off topic, but I wonder how they bond the
 > lengths together?
 >
 >
 >
 >
 >