Dear friends, i am facing a problem that i can not still find the edge.

we want to construct an Nh3 system at -38oC. we want to use ST35.8I as others in Europe do. that material, as the notified body that is going to specify the installation is not accepting it due to fact that it is not specified for such temperatures. we do not want to change, at this time the material.

can anybody give some kind of advice?

thank you very much