Pipe fusion machines are used to fuse plastic pipe and fittings. These machines are used to prepare and join thermoplastic polymer materials such as polypropylene, polyethylene, PVDF and ECTFE pipe. Fusion machines heat up the ends of pipes and fittings and force them together to form a pressure-tight bond, resulting in a continuous length of pipe which is as strong as or stronger than the two fused components.
Pipe fusion machines typically include guides and locks to ensure proper placement of the two pipes, as well as additional components used to maintain correct force on the two pieces throughout the heating and cooling process. These devices are almost always adjustable to accomodate different pipe diameters and are available in a variety of shapes and sizes, as shown below.
A large fusion machine with integral heaters and portable construction (left); a smaller benchtop machine.
Image credit: McElroy