Electrically weldable pipe joint and production method thereof

Details Electrically weldable pipe joint and production method thereof Electrically weldable pipe joint and production method thereof

1997-07-03

1999-06-29

Hoang, Tu B.

Electric heating

Heating devices

With heating unit structure

219535, 285 21, H05B 344

Patent

active

059164689

ABSTRACT:
An inner-less electrically weldable pipe joint has a hollow cylindrical pipe joint body of a thermoplastic material and a resistance heating wire coil surrounded by the pipe joint body. The wire is partly exposed to an hollow interior of the pipe joint body and partly embedded in an inner surface of the pipe joint body. During the welding operation, the material of the welding zone of the pipe joint and the pipes being connected is readily and selectively heated by the heat from the exposed wire, there by enhancing the welding strength and shortening the welding time. Also, described are methods of producing such an inner-less electrically weldable pipe joint.

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