How to seal HDPE double wall corrugated pipe

HDPE double-wall corrugated pipe has been widely used in municipal drainage, sewage, farmland irrigation and other fields due to its excellent chemical stability, corrosion resistance, light weight, high strength and good flexibility. The sealing performance of the pipeline system is the core link to ensure its long-term stable operation, prevent leakage and pollution, and ensure the quality of the project. For the HDPE double-wall corrugated pipe products of AD Pipeline, the correct sealing method and standardized construction operation are essential.

Before the sealing connection of HDPE double-wall corrugated pipe, adequate preparation work is the foundation. First of all, it is necessary to carefully check whether the pipes and fittings to be connected are of the same specification and model to ensure that they are intact. The products of AD Pipeline have been strictly inspected before leaving the factory, but the review before construction is still indispensable. At the same time, it is necessary to prepare suitable seals, such as rubber rings, whose quality directly affects the sealing effect. It is necessary to ensure that the rubber rings are not damaged or aged, and the size matches the pipe interface.

The cleanliness of the pipe connection surface is one of the key prerequisites for the successful sealing. It is necessary to use a clean rag or special tools to thoroughly remove the soil, oil, moisture and other impurities on the surface of the pipe and pipe connection end to ensure that the interface is dry and clean. For the HDPE double-wall corrugated pipe of AD pipe, its precision design interface structure can better fit with the seal after cleaning. In addition, it is also necessary to check whether the pipe port is flat. If there are burrs or irregularities, special tools should be used for trimming to avoid affecting the sealing effect or damaging the seal.

At present, the commonly used sealing connection methods of HDPE double-wall corrugated pipes mainly include rubber ring sealing socket connection, hot-melt butt connection and electric-hot melt connection. Rubber ring sealing socket connection is one of the most widely used methods. During operation, apply special lubricant evenly on the inner wall of the socket end and the outer wall of the socket end of the pipe. Note that the lubricant must not contain ingredients harmful to the rubber ring. Then install the rubber ring correctly in the groove of the socket to ensure that it is flat and free of distortion. Next, insert the pipe socket slowly and smoothly into the socket by mechanical or manual means until it reaches the predetermined position. During the insertion process, ensure that the pipe has the same axis to avoid displacement or damage to the rubber ring. The HDPE double-wall corrugated pipe of AD Pipe is designed with the reliability of the rubber ring seal fully in mind. Its socket has high dimensional accuracy, which can effectively ensure the compression of the rubber ring, so as to achieve a good seal.

For occasions with large diameter or extremely high requirements for sealing performance, hot melt butt connection is an ideal choice. The method is to heat the end faces of the two pipes to a molten state through a special hot melt butt welding machine, and then quickly fit them and press them to form a firm whole after cooling. During construction, it is necessary to ensure that the end faces of the pipes are cut flat and clean, and set the appropriate heating temperature, pressure and time parameters according to the pipe specifications and ambient temperature. The HDPE double-wall corrugated pipe of AD Pipeline has good hot-melt welding performance, and the interface strength after welding is usually higher than the strength of the pipe body.

electric hot-melt connection is to use the electric heating wire pre-embedded on the inner surface of the pipe. The electric heating wire is energized through special equipment, so that the inner surface of the pipe and the outer surface of the pipe are heated and melted at the same time, and the connection is realized after cooling. This method has a high degree of automation, little influence of human factors, and stable and reliable sealing quality. It is especially suitable for special parts where hot-melt docking cannot be carried out or projects with extremely high requirements for connection quality.

No matter what kind of sealing connection method is used, the standardized operation and quality control during the construction process are indispensable. Construction personnel need to undergo professional training and be familiar with the technical points and equipment operation rules of the connection method used. After the connection is completed, an appearance inspection should be carried out to ensure that there are no obvious defects at the interface. If necessary, a pressure test or leakage test should be carried out to verify whether the sealing performance is up to standard.

In short, the sealing of HDPE double-wall corrugated pipe is a systematic work. From material preparation, interface cleaning to connection operation and quality inspection, every link needs to be treated strictly. Select high-quality AD pipeline HDPE double-wall corrugated pipe products and strictly follow the standard specifications for sealing connection construction to ensure the sealing and durability of the entire pipeline system, and provide a solid guarantee for the smooth operation of various projects.