Heat shrink insulation system is designed to complement the mouth of a heat shrinkable material is buried corrosion and overhead weld steel pipe corrosion and heat pipes can also be used to seal pipe flange joints corrosion. It is a composite of radiation cross-linked polyolefin substrates made of hot melt and specialty seals, special sealing hot melt and polyolefin substrates, steel surfaces and solids epoxy coating can form a good bond. Installed in the heating heat-shrinkable sleeve, while the radial contraction of the substrate, the composite inner layer melts, tightly wrapped up in the mouth, together with the substrate into a solid shape in the pipeline corrosion body having excellent wear resistance, corrosion resistance, impact resistance and good resistance to UV and photo-aging properties. Features - high mechanical strength, anti-aging ability. - Good resistance to environmental stress performance. - Excellent adhesive properties. - Easy to use.