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Introduction of pe water supply pipe

PE water supply pipe connection method polyethylene pipe and pipe, pipe and PE pipe, pipe and fittings, as well as the connection between the polyethylene pipe and metal pipe a lot of, PE water supply pipe connection has its own advantages and limitations, the user can according to the pipe diameter, working pressure, the use of places and other environment, choose the appropriate connection.

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PE water supply pipe

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Product Description

PE water supply pipe connection method polyethylene pipe and pipe, pipe and PE pipe, pipe and fittings, as well as the connection between the polyethylene pipe and metal pipe a lot of, PE water supply pipe connection has its own advantages and limitations, the user can according to the pipe diameter, working pressure, the use of places and other environment, choose the appropriate connection. The common connection modes of polyethylene pipelines for urban water supply are: hot melt connection, electric fusion connection, socket flexible connection, flange connection, steel plastic transition joint connection, etc. 1. Hot melt connection Hot melt connection is to use a special heating tool to heat the parts to be connected of polyethylene pipes or fittings under pressure. After melting, remove the heating tool and apply pressure to connect the two melting surfaces together. Keep it under stable pressure for a period of time until the joint cools. The hot-melt connection includes a hot-melt butt connection, a hot-melt socket connection, and a hot-melt saddle connection. 2. Electrofusion connection Electrofusion connection is to use a special electrofusion pipe fitting with embedded resistance wire to closely contact and energize the connection part of PE pipe or pipe fitting. PE water supply pipe heats the connection part through the embedded resistance wire to melt and connect it into one body until the joint cools. Electrofusion connections can be used to connect with polyethylene pipes or socket fittings of different types and different melt flow rates. Electrofusion connection is divided into electrofusion socket connection and electrofusion saddle connection. 3. Socket-type flexible connection Polyethylene pipe Socket-type flexible connection is a new connection mode developed by referring to the socket-type flexible connection principle of cast iron pipe and polyvinyl chloride pipe (PVC-U). PE pipe is welded at one end of polyethylene pipe with a reinforced polyethylene socket. Socket type flexible connection is to directly insert one end of polyethylene pipe into the special socket of pipe or pipe fitting, and achieve the purpose of connecting PE pipe and pipe fitting by compressing and resisting drawing through the locking ring in the socket and compressing and sealing with rubber sealing ring. 4. Flange connection Flange connection is mainly used for the connection of polyethylene pipes and metal pipes or valves, flow meters, pressure gauges and other ancillary equipment. The flange connection is mainly composed of polyethylene flange connection, steel or aluminum back pressure looper flange, steel or aluminum flange, gasket or sealing ring, bolt, nut, etc. Flange connection is through the fastening bolts, nuts, so that the flange connector and flange close contact, to achieve the purpose of connection. 5. Steel-plastic transition joint connection Steel-plastic transition joint connection adopts steel-plastic transition joint prefabricated by cold pressing or other means to connect polyethylene pipe and metal pipe. The steel-plastic transition joint has a pull-resistant locking ring and sealing ring, which is usually required to have good sealing performance and pull-resistant, pressure resistance is greater than the polyethylene pipe in the system. The above is the connection method of PE pipe. It should be noted that it is strictly prohibited to directly make pipe threads on polyethylene pipes and pipe fittings in any form and adopt threaded connection. It is strictly prohibited to use open flame baking polyethylene pipes and pipe fittings for direct connection. The connection technology of polyethylene has been very mature and reliable. Statistics show that the leakage rate of polyethylene pipe is less than 2/100,000, which is far lower than 2-3% of ductile iron pipe, which greatly improves the safety and economic benefits of the pipeline, which is also a very important reason for the use of polyethylene pipe in gas pipeline.

HDPE water supply pipe:
1. Reliable connection: PE pipe systems are connected by electric melting, and the strength of the joint is higher than that of the pipe body.
2, good low temperature impact resistance: PE pipe low temperature embrittlement temperature is very low, can be used safely in the low temperature range. During winter construction, the material will not crack due to its good impact resistance.
3. Good stress cracking resistance: PE pipe has low notch sensitivity, high shear strength and excellent scratch resistance, and its environmental stress cracking resistance is also very prominent.
4, good chemical corrosion resistance: PE pipe can resist the corrosion of a variety of chemical media, the chemical substances in the soil will not cause any degradation of the pipeline. Polyethylene is an electrical insulator, so it does not decay, rust or electrochemical corrosion; in addition, it does not promote algae, bacteria or fungi growth.
5. Aging resistance and long service life: polyethylene pipes containing 2-2.5% evenly distributed carbon black can be stored or used outdoors for 50 years without being damaged by ultraviolet radiation.
6, good wear resistance: PE pipe and steel pipe wear resistance comparison test shows that the wear resistance of PE pipe is 4 times that of steel pipe. In the field of mud transportation, compared with steel pipes, PE pipes have better wear resistance, which means that PE pipes have a longer service life and better economy.
7, good flexibility: the flexibility of PE pipe makes it easy to bend, engineering can bypass obstacles by changing the way of pipe direction, in many occasions, the flexibility of the pipe can reduce the amount of pipe fittings and reduce installation costs.
8. Low water flow resistance: PE pipe has a smooth inner surface, which has a higher conveying capacity than traditional pipe, and also reduces the pressure loss of the pipeline and the energy consumption of water delivery.
9, easy to handle PE pipe than concrete pipe, galvanized pipe and steel pipe lighter, it is easy to handle and install, lower manpower and equipment requirements, means that the installation cost of the project is greatly reduced.
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