Pipe

 HAN BONG multilayer pipe is crosslinked polyethylene composite pressure pipe (PEX-AL-PEX) or High Density Polyethylene composite pressure pipe (PEX-AL-HDPE, HDPE-AL-HDPE) with welded aluminum tube reinforcement between the inner and outer layers. The inner and outer layers are bonded to the aluminum tube by a melt adhesive. The material has minimum elongations and ultimate tensile strengths of 20 % and 100 MPa (14 600 psi). HAN BONG multilayer pipe is a composite pipe that combines the advantages of metal and plastic pipes. In comparison with thick walled plastic pipes produced from one material, composite multilayer pipes have a hoop stress distribution that differs substantially from both the thick and thin walled pipe cases. But thick walled plastic pipes have hoop stresses that vary through the wall, and are usually described by the Lame Theory. The composite nature of HAN BONG multilayer pipe, composed of materials with very different Young’s Modulus values, will, on pressurization, not have a uniform stress distribution through the thickness of the wall of the pipe.