Which method can be used to join two drainage pipes effectively?

Electrofusion is the most effective method for joining two drainage pipes, especially those made of polyethylene (PE) or other thermoplastic materials. This technique involves the use of an electrical current to heat a fusion wire embedded within a coupling or fitting, which in turn melts the surrounding pipe material. Once the materials cool down, a strong and permanent bond is formed, creating a leak-proof connection.

Electrofusion connections are known for their reliability and ability to maintain structural integrity under varying conditions, making them particularly valuable in drainage systems where pressure and environmental conditions can fluctuate. This method also minimizes the risk of joint failure due to soil movement or ground settling, which can be a concern in drainage applications.

While other methods may be used in different contexts, such as manual fastening or physical binding, these often do not provide the same level of strength and reliability as electrofusion. Welding with a torch is typically suitable for different types of materials or applications, but it is not always compatible with drainage pipes, particularly those made from thermoplastics.