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  • 1.  New PPI TN-55 link

    Posted 04-17-2018 08:10

    This is the link to the new PPI document "Plastic Piping Materials for Geothermal/Geoexchange Heating and Cooling Applications"


    We hope that this document helps the IGSHPA community. Please let us know of any feedback, questions, or suggested changes.  


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