Patent ID: 7472476

Claim:
A method of applying protective cladding over welded end portions of coated sections of pipe for a pipeline, comprising the steps of: applying a sheet of synthetic resin with electrically conductive elements to form a cylindrical sleeve about the welded end portions, the electrically conductive elements being located on sides of the sheet for circumferential positioning on coated sections of the pipe on each side of a welded end portion of the pipe; attaching the electrically conductive elements to a source of electrical current; introducing at least one component into the interior of the cylindrical sleeve to allow a synthetic resin to form and fill the interior of the sleeve as joint infill between the adjacent pipe sections; sending electrical current into the electrically conductive elements to heat adjacent portions of the cylindrical sleeve to bond together with coated sections and seal the sleeve with the coated sections; applying a strip of synthetic resin with an electrically conductive element therewith along a longitudinal seam of the cylindrical sleeve; sending electrical current into the electrically conductive clement with the synthetic resin strip to heat the strip to bond the strip to the joint infill, to the sleeve and to the cylindrical seam over the longitudinal sleeve.