What materials are meant by polyurethane integral foaming + polyethylene for buried heating hot water pipes?
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As the title suggests, this is my first time working with directly buried HVAC pipes. What exactly are polyurethane integral foaming and polyethylene – the materials intended to be used for underground heating hot water pipes? If it’s to be buried directly, how should compensation for the pipes be considered? Are there any reference tutorials? Thank you
Taking advantage of the excellent adhesiveness of polyurethane foam, the polyethylene shell is cleverly fixed onto the polyurethane during foaming to serve as a protective layer
This post was last edited by hesonchang214 on 2020-9-10 22:07; see the image below for details
A lot of effort was put in to find good images
Buying ready-made polyurethane insulation pipes isn’t the best option; it’s sufficient to carry out on-site foaming at the welds. For the standards of finished insulated pipes, refer to GB/T29047