METHOD FOR THERMALLY INSULATING WELDED JOINTS OF PRE-INSULATED PIPES
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United States of America
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Jun 21, 2019
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Jun 21, 2019
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Abstract
The invention relates to pipe heat insulation and in particular to methods of heat insulation installation on welded joints of subterranean pipes for transporting oil and oil products. The method includes applying an anticorrosive layer on the welded joint using heat-shrinkable polymeric tape, mounting heat insulating polyurethane foam pipe coverings on the tape, using tie straps with locks to secure the pipe coverings, gluing hot-melt adhesive tape at the edges of a pipe protective envelope to overlap the envelope and the pipe coverings, installing a metal casing symmetrically relative to the center of the weld joint, and sealing the metal casing and the envelope with a heat-shrinkable polymeric fabric. The technical result provides anticorrosive protection and heat insulation of the welded joint of steel pipelines, provides improved heat insulation installation on the pipeline, and reduces the cost of installation and labor intensity.
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