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Jinde aluminum plastic PP-R composite pipe is composed of five layers, the middle layer is thin-walled aluminum pipe, the outer layer is PP-R, the inner layer is PE or PP-R, and the layer to layer is made of hot-melt adhesive which can be bonded with plastic and metal. Through high temperature and high pressure extrusion, the five layers are multi-component organic composite. In polymer materials, PP-R and PE are recognized as stable, clean, non-toxic, odorless, corrosion-resistant, light weight and mechani |