Sleeve joint for plastic-sheathed insulated pipes, comprising an oversized joint sleeve of plastic material overlapping the ends of the sheaths of the connected pipes providing a gap between the sleeve and said ends. Spacer means are located inthe gap at either end. A circumferential groove is provided in the respective sheath outside of the gap. A fillet weld of a plastic material fills up the groove and the gap opening and covers the sleeve end face. A method of providing the sleeve joint comprises the steps of extruding molten weld material circumferentially on the heated weld area, the extrusion being within a weld shoe. Preferably the groove is cut immediately prior to the extrusion so as to avoid oxidation. The heating of the weld area preferably is made in two steps while using hot air. |