MULTI-LAYERED PIPE COUPLING

摘要

A multi-layered pipe includes at least an outer and an inner layer of thermoplastic material and a coupling comprising a thermoplastic material. A method for joining the multi-layered pipe to the coupling includes providing a coupling including a recess for receiving an end of a multi-layered pipe, the recess being configured, in use, to permit the coupling to contact the inner and outermost layers of a multi-layered pipe received in the recess; fitting an end of the multi-layered pipe into the recess R of the coupling; introducing heat to both the coupling sufficient to cause local melting at the interface between the coupling and either the inner layer alone or both the inner and outer layers of the multi-layered pipe.