HDPE Pipe is a high-density polyethylene plastic pipe with excellent corrosion resistance, light and easy to carry, strong pressure resistance, and long service life. Therefore, it is widely used in water projects. The choice of connection method is crucial to the stability and reliability of the pipeline system. As a common pipeline material, HDPE pipe has a variety of connection methods, each of which has its applicable scenarios and characteristics. Next, Puhui will introduce How is hdpe pipe most commonly joined and help you choose the appropriate connection method according to the specifications and models.
Hot melt connection
Hot melt connection is one of the most commonly used connection methods for HDPE pipes, mainly including butt welding and sleeve welding.
Butt welding: Butt welding is to heat the end faces of two HDPE water supply pipes to a softened state, and then press them together to form a uniform fusion joint between the pipes. Butt welding has the advantages of simple operation and high joint strength, but it requires high skills of the operator.
Sleeve welding: Sleeve welding is to connect two HDPE water supply pipes together through a hot melt sleeve. The inner and outer surfaces of the hot melt sleeve are heated to a softened state, contacted with the pipe end face, and then cooled under a certain pressure. Sleeve welding is easy to operate and is suitable for smaller-diameter HDPE water supply pipes.
Electrofusion connection
Electrofusion connection is to connect HDPE pipes together through HDPE Electrofusion Fittings with a resistance wire. During the connection process, the current passes through the resistance wire to heat the pipe fittings, so that the pipe fittings and the pipe are fused together. Electrofusion connection is suitable for HDPE pipes of various diameters and has advantages such as good sealing performance and high-strength joints. It should be noted that electrofusion connection has high requirements for the stability of the power supply.
Other connection methods
In addition to hot melt and electrofusion connections, there are some other HDPE pipe connection methods suitable for specific scenarios.
Mechanical connection: HDPE pipes are connected together through mechanical connection methods such as flanges and plug-ins. The mechanical connection is easy to operate, but the sealing and strength of the joints may be slightly lower than hot melt and electrofusion connections.
Gluing: Use special glue to connect HDPE pipes together. Gluing is suitable for smaller-diameter HDPE water supply pipes, but there may be a risk of reduced sealing performance under long-term use.
How to choose a suitable connection method
When choosing a connection method for HDPE pipes, it is necessary to consider factors such as the diameter of the pipe, the use environment, and the project budget.
For larger-diameter HDPE pipes, butt fusion, and electric fusion are ideal choices because they provide higher joint strength and sealing performance.
For smaller-diameter HDPE pipes, sleeve fusion, electric fusion, and adhesive bonding are all viable options. The specific choice should be based on actual project conditions and budget considerations. In special environments, such as when a stable power supply or safe voltage cannot be provided, mechanical connection can be considered.
