YUXI heat shrinkable tube is a kind of heat shrinkable anticorrosion material designed for anti-corrosion of welded joints of buried and overhead steel pipelines and thermal insulation joint repair of thermal insulation pipelines. It can also be used for sealing and anti-corrosion of pipeline flange connections. It is composed of radiation crosslinked polyolefin substrate and special sealing hot melt adhesive. The special sealing hot melt adhesive can form good adhesion with polyolefin substrate, steel pipe surface and solid epoxy coating. When the heat shrinkable sleeve is heated and installed, while the base material shrinks radially, the internal composite adhesive layer melts and is tightly wrapped at the joint repair. Together with the base material, it forms a firm anti-corrosion body outside the pipeline, which has excellent wear resistance, corrosion resistance, impact resistance and good UV line and light aging resistance.