May 9, 2025 – In the field of modern pipeline engineering, PE (polyethylene) pipes have firmly secured their important position because of their excellent performance. Mastering the connection technologies and characteristics of PE pipes is of great significance for ensuring the quality of projects and the safety of operation. Currently, there are multiple connection methods for PE pipes, such as hot melt connection and electrofusion connection, and each method has its own unique features.
Hot melt connection is a commonly used method. With the help of special heating tools, the parts of PE pipes to be connected are heated under pressure. After they are melted, pressure is applied for fitting, and a firm connection is achieved after cooling. This method is further divided into three types: hot melt butt joint, socket fusion, and saddle connection. Electrofusion connection relies on special electrofusion fittings with embedded resistance wires. After being electrified, the resistance wires generate heat, melting the connection parts of pipes and fittings into one entity. Its advantage lies in its ability to be suitable for different types of PE pipes and fittings with various melt flow rates.
Furthermore, the socket flexible connection follows the connection principle of cast iron pipes and PVC pipes. A reinforced socket is welded at one end of the PE pipe for connection with other pipes. Flange connection is applicable for connecting PE pipes with metal pipelines or auxiliary equipment, achieving a stable connection through the combination of multiple components. The steel-plastic transition joint connection utilizes prefabricated joints and methods like cold pressing to achieve the butt joint between PE pipes and metal pipes.
According to AsiaMB’s understanding, PE pipes also show outstanding performance. They have excellent corrosion resistance and can easily handle the transportation of corrosive media such as acids, alkalis, and salts. Their high abrasion resistance can effectively reduce fluid resistance and improve transportation efficiency. Their good pressure resistance makes them suitable for high-pressure fluid transportation scenarios. Their remarkable low-temperature resistance ensures that PE pipes are not prone to breakage in low-temperature environments. At the same time, PE pipes are light in weight and high in strength, making construction and installation convenient, greatly reducing labor intensity. With a service life of several decades, they can work stably for a long time under normal usage conditions.
These diverse connection methods and excellent performance characteristics not only provide a solid support for the extensive application of PE pipes in various engineering projects but also offer comprehensive references for engineers and constructors during the pipe selection and construction processes, contributing to the creation of higher-quality and more reliable pipeline projects.