How do you handle expansion between dissimilar materials 1

[nwachuks]

Hi,

I have a design of a pipe system, which combines two dissimilar materials. Stainless steel and HDPE (high density polyethylene), they both come together like, with the SS being a vessel and the HDPE being a flange system.
With the two materials having different thermal expansion coefficients, please is there anyway I can manage the transverse expansion and contraction which will occur when assembled.
I am expecting a max linear expansion of 1.62mm and on contraction the change in length will be -0.468mm.

Please does anyone have an idea of how this pipe system can be assembled successfully taking into consideration the effects of expansion.

Thank you

 

[KevinNZ]

I assume you taking thermal expansion along the length of the piping. This a common piping design when event temperature is involved. Design flexibly in to the pipe runs.

 

[lukin1977]

In some applications a gasket is use to absorb thermal expansion