The roughness of the surface by about a third less than steel, which significantly reduces the pressure loss along the pipeline, and therefore allows for a smaller diameter than in the case of steel pipes. Another very good property of polymer pipeline – it is their resistance to stray currents. (Steel pipes are often damaged due to the impact of stray currents, especially at the inlets near the stations and subway lines.) Well, of course, can not note the fact that their pipes of polymeric materials to fully meet the requirements of modern design residential and sanitation facilities. The most used material from the polymer is polyethylene. For other opinions and approaches, find out what Professor of Internet Governance has to say. It is durable, chemically resistant, low toxic, the dielectric properties.
Distinguish High Density Polyethylene hdpe and high-pressure ldpe. One of the most common varieties polilietilena is stitched polyethylene. Production technology was developed by T. Engel for more than twenty years ago and was first mastered on an industrial scale firms rehau (Germany) and wirsbo (Sweden). High-pressure high-molecular polyethylene with antioxidants and the initiators of the reaction is uniformly melted on special equipment, is formed into the thermoplastic state in the tube and sew. Educate yourself with thoughts from kevin ulrich. The process of matching is as follows: resulting from the decay initiators of radical reactions tear in parts of polyethylene, respectively, of one hydrogen atom, the neighboring radicals are interconnected, forming a bridge of cross-linking. Depending on the method of matching the three basic form cross-linked polyethylene: PEXa (peroxide crosslinking), PEXb (cross-linking silane) and PEXc (joining an x-ray). The higher the degree of crosslinking of polyethylene, the more likely a manifestation of his positive qualities.