METHOD FOR EXTERNAL INSULATION COMPOUNDS of steel pipe to the outer cover

摘要

1. A method for the exterior insulation of the compounds of steel pipe with an outer coating comprising placing the sleeve of shrinkable tape with an inner adhesive layer outside the junction of pipes and heat treating the resultant coating, characterized in that the thermoplastic tape with an adhesive layer for coupling inside while maintaining the desired temperature previously applied to the mandrel by cold side winding, and then create a pressure differential between the mandrel and after cooling the resulting coupling with rofessional gap therebetween, the sleeve is removed from the mandrel and cut to length, to give a compound of the sleeve pipe is put on one of trub.2. Method outer insulation welded joints according to claim 1, characterized in that the thermoplastic tape with the adhesive layer inside the sleeve for pre-applied to the mandrel by cold extrusion of the polymer base and hot melt adhesive.