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What are the types of plastic composite pipe?
2018-11-21 09:12:23 点击数：622Appearing on the market, there are three plastic composite pipe:
1, PE / AL / PE (Polyethylene / Aluminum / Polyethylene);
2, PE / AL / PEX (Polyethylene / Aluminum / Crosslinked Polyethylene);
3, PEX / AL / PEX (Crosslinked Polyethylene / Aluminum / Crosslinked Polyethylene).
A first inner and outer layers is polyethylene, the second inner layer is cross-linked polyethylene, the outer layer is a polyethylene, the third is the inner and outer layer are cross-linked polyethylene, the central layer are aluminum layer.
Such tubes, containing aluminum layer, increase resistance to internal pressure strength, blocking oxygen, CO2 and avoid the threat of corrosion of water pipeline equipment, and good thermal conductivity and reduce hot concentrated, anti-static and shielding and the flame retardant, so easily accepted by the public. And because of its connection fittings for copper Meifeng plastic alloy fittings, stainless steel pipe thread sealing connection is more convenient, without special tools, and now there are a lot of cast iron pipe interface close, thus showing a certain advantage.
Second crosslinked polyethylene (PEX), intermolecular structure is more stable, more solid than the first one, is more suitable for building water supply, heating system, a third of its plastic part.
Five kinds of plastic pipe can be applied to indoor cooling and hot water has its own advantages and disadvantages can be seen from the above comparison, only unique advantage of plastic composite pipe is capable of blocking the gas penetration, which applied to the closed loop The hot water system (such as floors, the heating of the hot water pipe system) is beneficial, because they can prevent the infiltration of oxygen to avoid oxidation corrosion in the system. Other plastic pipe can be used several methods to compensate for their blocking oxygen poor shortcomings, so the same can be applied to the closed loop hot water system. In addition to the five kinds of plastic tube, the outer plastic-lined steel pipe and fittings and plastic pipe and fittings, plastic complex brass, plastic-lined aluminum tubes can also be used in the field of indoor cooling and hot water. Lined with plastic or plastic-coated metal tube each of which has its own unique advantages and disadvantages. Lined with plastic or plastic-coated steel pipe galvanized steel pipe for the matrix, reliable mechanical performance most likely to be trusted by the user. So at home and abroad in the field of indoor cooling and hot water above pipe actually being used, and are in continuous improvement and development. Plastic composite pipe has developed rapidly in the country, corresponding to expand market share, but can not be inferred that the plastic composite pipe will become the mainstream of the indoor water supply pipe. Forecast the various pipe contention and the indoor water supply pipe market share situation will exist for a long time. The several pipes for hot and cold water pipes in indoor areas domestic existing production enterprises to establish a production line and put into operation.
1, PE / AL / PE (Polyethylene / Aluminum / Polyethylene);
2, PE / AL / PEX (Polyethylene / Aluminum / Crosslinked Polyethylene);
3, PEX / AL / PEX (Crosslinked Polyethylene / Aluminum / Crosslinked Polyethylene).
A first inner and outer layers is polyethylene, the second inner layer is cross-linked polyethylene, the outer layer is a polyethylene, the third is the inner and outer layer are cross-linked polyethylene, the central layer are aluminum layer.
Such tubes, containing aluminum layer, increase resistance to internal pressure strength, blocking oxygen, CO2 and avoid the threat of corrosion of water pipeline equipment, and good thermal conductivity and reduce hot concentrated, anti-static and shielding and the flame retardant, so easily accepted by the public. And because of its connection fittings for copper Meifeng plastic alloy fittings, stainless steel pipe thread sealing connection is more convenient, without special tools, and now there are a lot of cast iron pipe interface close, thus showing a certain advantage.
Second crosslinked polyethylene (PEX), intermolecular structure is more stable, more solid than the first one, is more suitable for building water supply, heating system, a third of its plastic part.
Five kinds of plastic pipe can be applied to indoor cooling and hot water has its own advantages and disadvantages can be seen from the above comparison, only unique advantage of plastic composite pipe is capable of blocking the gas penetration, which applied to the closed loop The hot water system (such as floors, the heating of the hot water pipe system) is beneficial, because they can prevent the infiltration of oxygen to avoid oxidation corrosion in the system. Other plastic pipe can be used several methods to compensate for their blocking oxygen poor shortcomings, so the same can be applied to the closed loop hot water system. In addition to the five kinds of plastic tube, the outer plastic-lined steel pipe and fittings and plastic pipe and fittings, plastic complex brass, plastic-lined aluminum tubes can also be used in the field of indoor cooling and hot water. Lined with plastic or plastic-coated metal tube each of which has its own unique advantages and disadvantages. Lined with plastic or plastic-coated steel pipe galvanized steel pipe for the matrix, reliable mechanical performance most likely to be trusted by the user. So at home and abroad in the field of indoor cooling and hot water above pipe actually being used, and are in continuous improvement and development. Plastic composite pipe has developed rapidly in the country, corresponding to expand market share, but can not be inferred that the plastic composite pipe will become the mainstream of the indoor water supply pipe. Forecast the various pipe contention and the indoor water supply pipe market share situation will exist for a long time. The several pipes for hot and cold water pipes in indoor areas domestic existing production enterprises to establish a production line and put into operation.
