Pipe joining system and method

A structure for joining a first member to a second member wherein

• said members have extended surfaces of a common configuration in contact with and to be fused to one another,
• means for maintaining said extended surfaces in essentially uninterrupted contact with one another,
• means substantially separate from a length of contact between said members having a heat generating capacity to heat said members to be joined to their fusion temperatures,
• said means for heating including high mu material having a Curie temperature sufficient to cause fusion of said member but below damage temperature of the material of the members,
• said high mu material being embedded in one of said members.

An electric fusion coupling which connects members to be connected which are made of resins of different melting temperatures comprising

• a first member having a first surface,
• a second member having a surface to be joined to said first surface,
• said members having different fusion temperatures,
• a ferromagnetic heater substantially spaced from said surfaces for heating both of said surfaces,
• said ferromagnetic heater having a Curie temperature above the fusion temperature of both said members.