Posts Tagged ‘plastic pipes’
History of development of polymeric pipes
January 20, 2012 | 
Author Today on the market of construction materials is a large assortment of plastic pipes. And if 10 years ago in the minds of our citizens there were convinced that the trumpet can be only railway, now the situation has changed radically. Over the years polymer pipes deservedly won great popularity.
PEX pipes should be used for hot and cold water supply, central heating and floor heating systems. They are resistant to chemical substances that are not subject to corrosion, low surface roughness and smoothness of the wall prevent deposits on internal surfaces. PEX pipes do not emit harmful substances, does not alter the taste of water.
Polyethylene is the only of the thermoplastic materials capable of molecular chains in a mesh structure. PEX pipe made of chemically modified polyethylene. Tailored polythene, in comparison with usual, is more resistant to high temperature and keeps the elevated mechanical properties; characterized by good shrink tape. PEX tubing material is high-density polyethylene and linear structure and high strength.
Multilayer pipe based on cross-linked, due to the presence of ethylene vinyl alcohol layer of aluminum or Al, securely protect transported heat from penetrating through the boundary of the tube, which causes air oxygen corrosion and premature failure of heating elements and devices of the heating system. PEX pipes are connected by brass fittings that represent a wide range of products and are divided into 2 main categories:
- PEX fittings-PEX (PEX to connect among themselves)
- PEX fittings-thread (for connections to other parts of the system through the traditional tubal thread)
PEX do not need to calibrate, braze, cooking, glue, which allows you to save time and reduce the cost of installation. Thanks to a great length of the pipe in coils, installation is done with a minimum number of connections. Scratches, twists do not affect their life.
Posted in Civil engineering | 
Tags: Heating System, PEX, PEX Pipe, PEX tubing, plastic pipes, Polyethylene | 
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Plumbing
Plumbing is a specialty of mechanical engineering applied to building and plumbing specialist, bringing together all the techniques used to circulate fluids (liquid or gas) by means of pipes, tubes, valves, taps, valves , pumps and materials to the various points of use of an installation.
The objectives of the plumbing are designed to allow better hygiene and make life easier in society to meet the basic needs of living human beings. It is already known as essential as breathing, drinking and dispose of waste are fundamental. The high concentration of humans on small territories require that such health measures. Improve the safety of homes, cities by the techniques of plumbing, construction services, sewer and water. Urban health could improve and enable the growth of cities in hygienic conditions despite the increase in population in a small area of territory.
The plumbing supplies can be steel, stainless steel, clay, bamboo, copper, brass, glass, thermoplastic aqueduct (PVC, polyethylene, polypropylene), cement, asbestos cement or cement aqueduct armed to the storm, cast iron centrifuged for health or ductile iron for water, aluminum-lined thermoplastic for the storm, vitrified clay or other materials approved for a specific use.
The piping may be made of reinforced concrete that is found mainly in the field of civil engineering, an area that starts at a meter outside the building, while inside the building, the pipe is the Building Systems Engineering and ends at a meter outside of it.
Connections can be made: by mechanical or compression joints for cast iron pipes, some plastic pipes and vitrified clay, by cable / lead for cast iron pipes with bell attached by threaded or threaded or welded to the pipes steel, for soldering to copper pipes, with cement for cement pipes by fusion of plastic pipes, for o-ring for PEX tubing or plastic tubing.
Posted in Civil engineering | Tags: Asbestos Cement, Cast Iron Pipes, Cement Pipes, Compression Joints, Copper Pipes, PEX tubing, plastic pipes, Plumbing Specialist | No Comments »