| abstract |
An electrofusion coupling member (10) comprising: a body (12) having at least one contact surface (13a); and at least one electrical resistance heating element (14) arranged in or on said body (12) adjacent to said contact surface, wherein said body (12) comprises at least one thermoplastic composition (16) comprising a substance thermoplastic and a plurality of metal particles incorporated in said thermoplastic substance and constituting a thermoplastic composition containing metal particles, and in which a concentration of said particles ranges from 1 weight percent to 30 weight percent of the total weight of the composition. |