HDPE gas pipe

Introduction to HDPE Gas Pipe Products

HDPE gas pipe is a new type of pipe made by extruding high-density polyethylene resin, mainly used for the transportation of gas liquids such as natural gas, liquefied gas, and petroleum pipelines.

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HDPE pipeline connection method

1. Hot melt docking

Using a specialized heating tool, heat the ends of two HDPE gas pipes to be connected to a molten state, then quickly connect them together and maintain a certain pressure for a period of time to fuse the pipe ends into one.

Scope of application: Suitable for connecting HDPE pipes with larger diameters, generally DN90 and above.

2. Hot melt socket connection:

Insert the end of one pipe into the socket of another pipe, heat the socket area to melt the inner and outer walls of the pipe, and then maintain a certain pressure for a period of time to connect the pipes together.

Scope of application: Suitable for connecting HDPE pipes with smaller diameters, generally DN63 and below.

3. Electric fusion socket connection:

On the basis of socket connection, an electric heating wire is installed inside the socket of the pipe, and the electric heating wire is heated by a dedicated electric melting welding machine to melt the inner and outer walls of the pipe, thereby achieving the connection of the pipe.

4. Steel plastic transition connection:

Used to connect HDPE gas pipes and metal pipes. Install steel plastic transition joints at the ends of HDPE gas pipes and connect them to metal pipes through threaded or flanged connections.

HDPE related accessories

Product Advantages

1、 Strong corrosion resistance

HDPE (high-density polyethylene) is an inert material that can withstand corrosion from various chemical media, except for a few strong oxidants. Compared with traditional metal pipes such as steel pipes and cast iron pipes, there is no electrochemical corrosion problem, so there is no need for additional anti-corrosion coatings, which not only saves costs but also reduces the risk of gas leakage caused by corrosion, ensuring the long-term stable and safe operation of the gas pipeline network system.

2、 Good sealing performance

HDPE gas pipes mainly adopt fusion connection (hot melt connection or electric melt connection), which can achieve the integration of joints and pipes. The tensile strength and bursting strength of the interface are higher than those of the pipe body, ensuring the sealing and safety of the entire pipeline system and effectively preventing gas leakage.

3、 Excellent crack resistance

HDPE gas pipes are made of high-quality imported raw materials, which have been tested by professional institutions and have excellent resistance to environmental stress cracking. They can adapt to various complex environmental conditions and are not prone to cracking caused by environmental factors during long-term use, ensuring the service life of the pipeline.

4、 Good flexibility

The fracture elongation of HDPE gas pipes generally exceeds 500%, and they have strong adaptability to uneven settlement of pipe foundations. In areas with unstable geological conditions or ground subsidence, HDPE gas pipes can adapt well to changes in terrain and avoid safety issues such as gas leaks caused by pipeline deformation or rupture. They are a type of pipeline with excellent seismic performance.

5、 Excellent flexibility

HDPE pipes have good flexibility and can be easily made into coils, supplied in longer lengths, thus saving the use of various connecting fittings. During the construction process, it is possible to bypass obstacles by changing the direction of the pipeline, reducing the number of pipe fittings used, lowering construction costs and difficulties, while also improving the adaptability of the project.

6、 Long service life

Under normal working conditions, the service life of HDPE gas pipes can reach over 50 years. This is mainly due to its excellent corrosion resistance, crack resistance and other properties, as well as high-quality raw materials and advanced production processes, which enable the pipeline to operate stably for a long time, reducing the frequency of pipeline replacement and maintenance.

7、 Low system cost

The comprehensive cost of HDPE gas pipes is relatively low, including material costs, transportation costs, construction costs, and other aspects. Compared with traditional metal pipes, although HDPE gas pipes may have a higher unit price, their advantages of simple construction, long service life, and low maintenance costs make them have a lower overall cost in the construction and operation of the entire gas pipeline system.

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