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The four connection methods of PE pipe are suitable for connecting which pipes


Release time:

Aug 27,2019

Hot melt butt connection is generally the main connection method used in large-diameter HDPE pressure pipeline system. Hot melt socket connection is mainly the connection method used in small-diameter HDPE pipes. When HDPE pipes are connected with other pipes such as metal pipes, flange connection must be adopted, and small-diameter pipes can be over-connected with steel and plastic. 1. Hot melt butt joint: Hot melt butt joint is to use hot melt butt welding machine to heat the pipe end (hot melt butt joint temperature is 210±10 ℃). After the pipe end melts, it is quickly attached to maintain a certain pressure and achieve the purpose of welding after cooling. HDPE pipes with a size greater than 90mm can be hot-melt pairs.

Hot melt butt connection is generally the main connection method used in large-diameter HDPE pressure pipeline system. Hot melt socket connection is mainly the connection method used in small-diameter HDPE pipes. When HDPE pipes are connected with other pipes such as metal pipes, flange connection must be adopted, and small-diameter pipes can be over-connected with steel and plastic.

1. Hot melt butt joint:

Hot melt butt welding is to use hot melt butt welding machine to heat the pipe end (hot melt butt temperature is 210±10 ℃). After the pipe end melts, it is quickly attached to maintain a certain pressure and achieve the purpose of welding after cooling.

HDPE pipes with a size greater than 90mm can be connected by hot melt butt joint.

PE管的四种连接方法分别适用于连接哪些管道

hot melt connection

2. Saddle butt connection:

HDPE pipe in the application process, often encounter according to the actual needs, the main branch of the problem. The saddle-shaped tee can be connected by saddle-shaped tee can be connected by saddle-shaped butt, that is, a saddle-shaped butt welding machine is used to directly connect a saddle-shaped tee on the main pipe, and then the equipped cutter is used to cut the main pipe, thus completing the division of the main pipe, and the construction is very fast.

PE管的四种连接方法分别适用于连接哪些管道

Saddle butt connection

3. Steel plastic flange connection:

When it is connected with steel pipe and valve, flange connection should be adopted. The connection between the steel pipe end and the metal flange shall comply with the corresponding steel pipe welding regulations.

PE管的四种连接方法分别适用于连接哪些管道

Steel plastic flange connection

4. Electrofusion connection:

Electrofusion connection is to first set the electrofusion pipe fitting on the pipe, and then use a special welding machine to energize the electrofusion pipe fitting according to the specified parameters (time, voltage, etc.), so that the inner surface of the electrofusion pipe fitting embedded with electric heating wire and the outer surface of the pipe insertion end are melted, and the pipe and pipe fitting are fused together after cooling. It is characterized by convenient and rapid connection, good joint quality, small interference from external factors, but the price of electrofusion pipe fittings is several times or even dozens of times that of ordinary pipe fittings (the smaller the caliber, the greater the difference).

Electrofusion connection

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