Rifeng multilayer pipe is composite pipe of five layers, inside and outside layers of which are made of Hight-Density polyethylene(HDPE) Cross-Linked(PEX) or Polyethylene Raised Temperature(PE-RT), tightly bonded with melt adhesive to the mid-layer of aluminum core which is longitudinally welded in an overlapping way. All layers are extruded by one ste...
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