Novel PP -R cold and hot return bend of passing a bridge

The utility model discloses a PP the R cold and hot return bend of passing a bridge, including connecting fixing device, arch form cross under and antibiotic layer, arch form cross under one side fixed connection straight tube, straight tube one side is equipped with connects fixing device, the arch form cross under is inside to be equipped with antibiotic layer, the antibiotic layer outside is equipped with inside lining copper layer, the inside lining copper layer outside is equipped with the heat preservation, the heat preservation outside is equipped with the aluminum pipe enhancement layer, the aluminum pipe enhancement layer outside is equipped with the wearing layer. The utility model discloses an other pipelines can be crossed over to the arch form cross under, utilize to connect that fixing device is convenient to link to each other with other accessories, can lengthen the live time through the oxidation resisting layer, utilize the aluminum pipe enhancement layer can make it more durable, utilize th