ISCO Industries
Butt Fusion
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Typically, polyethylene pipe and fittings are connected by means of butt fusion, which is done by utilizing a fusion machine that holds the pipe &/or fitting in a stationary position. A facer that has a cutting blade then trims the ends to be mated. A heater plate is positioned between the ends to be connected. The heater is then removed and the ends are brought together and allowed to cool.
By following the manufacturers' recommendations for butt fusion, the weld becomes as strong as the pipe itself. It is even possible to pull several hundred feet or more of HDPE pipe after it has been butt fused together, since you actually have created a section of monolithic pipe.