Shrink-sleeve series products are designed for the anti-corrosion of welding joints of buried and overhead steel pipes and the anti-corrosion sealing of thermal insulation pipes. They can also be used for the sealing and anti-corrosion of flange connection parts of pipes.It is made of radiation crosslinked polyethylene base material and special sealing hot melt adhesive, which can form good adhesion with polyolefin base material, steel tube surface and solid epoxy coating.When wk-hts heat-shrinkable sleeve is installed, the base material will shrink in the radial direction while the inner composite rubber layer is melted and tightly wrapped at the filling mouth. Together with the base material, it forms a firm anti-corrosion body outside the pipe, with excellent wear resistance, corrosion resistance, impact resistance and good anti-ultraviolet and photoaging performance.