PIPE ELECTRO-FUSION ASSEMBLY

CA 02864/62 2014-08-15 WO 2013/120201 PCT/CA2013/050114 PIPE, PIPE CONNECTION AND PIPELINE SYSTEM FIELD OF THE INVENTION The present invention relates to a pipeline system for conveying fluids and, in particular, to a pipe connection assembly, equipment and methods. BACKGROUND OF THE INVENTION Pipelines are needed for conveying fluids such as water, oil effluent, natural gas, carbon dioxide or mining slurries some of which may be pressurized. Thin walled metal pipes offer an advantage in terms of facilitated handling and reduced material costs, however, have proven difficult to connect in a reliable and efficient manner. It is desirable that the pipeline system be resistant to internal corrosion and/or abrasion that may shorten the useful life of the pipeline. Sometimes, the fluids transported within the pipeline may corrode or abrade metal pipe materials where many plastic materials exhibit superior resistance to these effects. It has become common to repair corroded or abraded pipelines by pulling significant lengths of a plastic liner through an existing metal pipe that is already installed and has been in service. New pipeline systems can also be constructed in the same manner. CA 3 0 4 0 1 63 2 0 1 9-0 4-1 2 Un système de canalisation, qui comprend des tuyaux revêtus de plastique ou non revêtus, est décrit. Un raccord métal à métal mécanique est utilisé. Il peut produire un joint étanche aux fluides. Un élément daccouplement de tuyau peut être utilisé pour sétendre sur le raccord. Des tuyaux revêtus de plastique peuvent voir leurs revêtements en plastique raccordés afin de former une vessie étanche aux fluides. Il est possible demployer une électrofusion.