The closed cell rate of our polyurethane foam is around 92%. With low thermal conductivity and low water absorption, combined with the protective shell of high-density polyethylene or glass fiber with good waterproofing properties, it alters the traditional condition of "wearing a damp quilt" for heating pipelines laid in trenches, significantly reducing the overall heat loss of the heating pipelines. The heat loss in the heat network is 2%, which is less than the international standard requirement of 10%. It has excellent corrosion resistance and insulation properties, with a long service life. The buried insulation pipeline, due to the tightly adhered polyurethane rigid foam insulation layer on the outer skin of the steel pipe, effectively prevents air and water from seeping in, providing good corrosion protection. PPR pipe with insulation

Junru PPR Foam Insulated Pipe, Double Insulation, DN150: